If you missed the first part of this article, then first head to read “Did Your FX algorithms Learn the Lessons from the CHF Storm?” where we have already discussed the particularities of forex in relation to flash crashes and runaway algorithms.
Spike Filtering
Many trading systems have incorrectly interpreted the CHF event, especially the important price gaps perceived either during the crash, or later, once trading activity resumed after a more or less long period of closed markets.
For example, when the data feeds were reactivated, the first quotations were significantly different from the last ones known by the systems. The event looked like a perfect price “spike”, i.e. a technical glitch with a non tradable price, which trading systems are taught to ignore.
Indeed, most trading systems incorporate some sort of “anti-spike” filter whose job is to protect the integrity of the data feed which is at the source of the trading decisions. A spike not filtered would quite often trigger orders at a non tradable price.
As you can guess, the trouble added by these anti-spike filters on top of the general panic, did not help.
An anti-spike system is much more difficult to design than how it seems… Let’s say you just filter based on a maximum percentage of variation of the rate, which we will call Y. If Y is too low, you will lose all volatile and fast movements, such as the flash crashes, the news such as NFP, etc. This can be dramatic. And if your Y is too high, you will potentially not filter the spikes… The very goal of such a filter.
You will probably end up moving up and down Y as the market evolves, and you will always experience issues. So the one price variation solution is not good enough.
To improve it, you may want to look at different and non-correlated data feeds. The good news is that with forex we have plenty of such feeds - interbank ones, different ECNs, futures quoted on exchanges, etc.
In addition to the price feed, it could also be useful to add Liquidity
Liquidity
The term liquidity refers to the process, speed, and ease of which a given asset or security can be converted into cash. Notably, liquidity surmises a retention in market price, with the most liquid assets representing cash. The most liquid asset of all is cash itself. · In economics, liquidity is defined by how efficiently and quickly an asset can be converted into usable cash without materially affecting its market price. · Nothing is more liquid than cash, while other assets represent varying degrees of liquidity. This can be differentiated as market liquidity or accounting liquidity.· Liquidity refers to a tangible construct that can be measures. The most common ways to do so include a current ratio, quick ratio, and cash ratio. What is the Definition of Liquidity? Liquidity is a common definition used in investing, banking, or the financial services space. Its primary function is to ascertain how quickly a given asset can be bought, sold, or exchanged without a disparity in market price. Which of the following assets is the most liquid? By definition, in terms of liquidity, cash is unequivocally seen as the most liquid asset in an economic sense. This is due to its widespread acceptance and ease of conversion into other assets, forms of cash, or currencies, etc. All other liquid assets must be able to be quickly and efficiently converted into cash, i.e., financial liquidity. This includes such things as stocks, commodities, or virtually any other construct that has an associated value. By extension, illiquid or non-liquid assets are not able to be quickly converted into cash. These assets, also known as tangible assets, can include such things as rare art or collectables, real estate, etc. Liquidity Spectrum Liquid assets can be defined primarily as either cash on hand or simply an asset that can be easily or readily converted into usable cash. It is important to note that cash is not uniformly liquid for several reasons. The below examples encompass all types of assets and their corresponding level of liquidity. Examples of Liquid Assets or Securities A good example of this is the US dollar, which is recognized or accepted globally, and backed by the US government or Federal Reserve Bank. Other major forms of cash include Euros, or major currencies. This differs notably from the legal tender in many emerging countries or others for political or economic reasons. Cash aside, assets such as stocks or equities, bonds and other securities, money market assets, marketable securities, US treasuries or T-notes, exchange-traded funds (ETFs), a savings account, and mutual funds serve as the most liquid assets. These are generally assumed to be quick assets. Each of these assets can be converted into cash either instantaneously, or via any brokerage platform, exchange, etc., often in as little as minutes or seconds. As such, these assets are liquid. Examples of Illiquid Assets or Securities Conversely, illiquid assets still retain importance and value, though are much more difficult to convert into cash. Common examples of this include land or real estate, intellectual property, or other forms of capital such as equipment or machinery. In the examples above, liquid assets are assumed to be convertible into cash without substantial fees or delays in time. Illiquid assets on the other hand often suffer from fees or additional conversion costs, processing times, ultimately creating a price disparity. The best example of an illiquid asset is a house. For many individuals this is the most valuable asset they will own in their entire lives. However, selling a house typically requires taxes, realtor fees, and other costs, in addition to time. Real estate or land also takes much longer to exchange into cash, relative to other assets. Types of Liquidity Overall, liquidity is a broad term that needs to be defined by two different measures: market liquidity and accounting liquidity. Both measures deal with different constructs or entities entirely, though are useful metrics with regards to individuals or financial markets. Market Liquidity Market liquidity is a broader term that is used by a market maker to measure the ease of which assets can be bought and sold at transparent prices, namely across exchanges, stock markets, or other financial sectors. This can include among others, a real estate or property market, market for fine arts and collectable, and other goods. Market Liquidity Example As mentioned above, certain financial markets are much more liquid than others. The degree to which stocks from large companies or foreign currencies can be exchanged is much easier than finding a readily available market for antiques, collectables, or other capital, regardless of utility. Overall, a stock market, financial brokerage, or exchange is considered to have the high market liquidity. This is because the difference between both the bid and ask prices between parties is very low. The lower the spread between these two prices, the more liquid a given market is. Additionally, low liquidity refers to a higher spread between two prices. Why Liquidity Varies and What Does Liquidity Mean in Stocks? Every asset has a variable level of liquidity meaning this can change depending on what is being analyzed. One can define liquidity in stocks or stock markets in the same way as in foreign exchange markets, brokers, commodities exchanges, and crypto exchanges. Additionally, how large the market is will also dictate liquidity. The foreign exchange market for example is currently the largest by trading volume with high liquidity due to cash flows. This is hardly surprising given that forms of cash or currencies are being exchanged. What is Liquidity in Stocks? A stock's liquidity refers to how rapidly shares of a stock can be bought or sold without largely impacting a stock price. By definition, liquidity in stocks varies for a number of reasons. Stocks with low liquidity may be difficult to sell and may cause you to take a bigger loss if you cannot sell the shares when you want to. In finance, the most liquid assets are always the most popular. By extension, if a spread between buyers and sellers increases, the market is considered to be less liquid. A good example of this is the real estate or property market. While highly valuable, there are large disparities between the purchase price and selling price of property, as well as the time associated in making these transactions, and additional fees incurred by other parties. Liquidity providers play a key role in this regard. Accounting Liquidity Unlike market liquidity, accounting liquidity measures something different entirely. Accounting liquidity is a measure by which either an individual or entity can meet their respective current financial obligations with the current liquid assets available to them. This includes paying off debts, overhead, or any other fixed costs associated with a business. Accounting liquidity is a functional comparison between one’s current liquid assets and their current liabilities. In the United States and other countries, companies and individuals have to reconcile accounting on a yearly basis. Accounting liquidity is an excellent measure that captures financial obligations due in a year. Accounting Liquidity Example Accounting liquidity itself can be differentiated by several ratios, controlling for how liquid assets are. These measures are useful tools for not just the individual or company in focus but for others that are trying to ascertain current financial health.As an example, accounting liquidity can measure any company’s current financial assets and compare them to its financial obligations. If there is a large disparity between these figures, or much more assets than obligations, a company can be considered to have a strong depth of liquidity.How to Calculate Liquidity Liquidity is of importance to investors, financial market participants, analysts, or even for an investment strategy. Calculating liquidity is a measure of firm or individual’s ability to utilize or harness current liquid assets to current cover short-term debt. This can be achieved using a total of four formulas: the current ratio, quick ratio, acid-test variation, and cash ratio. Current Ratio The current ratio is the easiest measure due to its lack of complexity. Quite simply, the current ratio measures a firm or individual’s current assets or those than can be sold within a calendar year, weighed against all current liabilities. Current Ratio = Current Assets/Current Liabilities If the current ratio’s value is greater than 1, then the entity in question can be assumed to reconcile its financial obligations using its current liquid assets. Highly liquid assets will correspond to higher numbers in this regard. Conversely, any number less than 1 indicates that current liquid assets are not enough to cover short-term obligations. Quick Ratio A quick ratio is a slightly more complex way of measuring accounting liquidity via a balance sheet. Unlike the current ratio, the quick ratio excludes current assets that are not as liquid as cash, cash equivalents, or other shorter-term investments. The quick ratio can be defined below by the following: Quick Ratio = (Cash or Cash Equivalents + Shorter-Term Investments + Accounts Receivable)/Current Liabilities Acid-Test Ratio The acid-test ratio is a variation of the quick ratio. The acid-test ratio seeks to deduct inventory from current assets, serving as a traditionally broader measure that is more forgiving to individuals or entities. Acid-Test Ratio = (Current Assets – Inventories – Prepaid Costs)/Current Liabilities Cash Ratio Finally, the cash ratio further isolates current assets, looking to measure only liquid assets that are designated as cash or cash equivalents. In this sense, the cash ratio is the most precise of the other liquidity ratios, excluding accounts receivable, inventories, or other assets. A more precise measure has its uses, namely regarding assessing financial strength in the face of an emergency, i.e., an unforeseen and time sensitive event. The cash ratio can help measure an entity or individual’s hypothesized solvency in the face of unexpected scenarios, events, etc. As such, the cash ratio is defined below: Cash Ratio = Cash and Cash Equivalents/Current Liabilities The cash ratio is not simply a doomsday tool but a highly practical measure when determining market value. In the financial services space, even large companies or profitable institutions can find themselves at liquidity risk due to unexpected events beyond their control. Why is Liquidity Important and Why it Matters to You? Liquidity is very important for not just financial markets but for individuals and investors. Liquid markets benefit all market participants and make it easier to buy and sell securities, stocks, collectables, etc. On an individual level, this is important for personal finance, as ordinary investors are able to better take advantage of trading opportunities. Additionally, high liquidity promotes financial health in companies in the same way it does for individuals. Conclusion – What Does Liquidity Mean? What is liquidity? This metric is a commonly used as a measure in the investing, banking, or financial services space. Liquidity determines how quickly a given asset can be bought, sold, or exchanged without a disparity in market price. Which of the following assets is the most liquid? – cash, stocks, real estate. Of all assets, cash or money is the most liquid, meaning it is the easiest to utilize. All other liquid assets must be able to be quickly and efficiently converted into cash. This includes such things as stocks, commodities, or virtually any other construct that has an associated value. Conversely, illiquid or non-liquid assets are not able to be quickly converted into cash. These assets, also known as tangible assets, can include such things as rare art or collectables, real estate, etc. Frequently Asked Questions About Liquidity Is Liquidity Good or Bad? The term liquidity refers to a measure and is neither good nor bad but is instead a metric of how convertible an asset is to cash. However, high liquidity is associated with lower risk, while a liquid stock is more likely to keep its value when being traded.Is a Home a Liquid Asset? A home or properly is not considered to be a liquid asset. Selling any property can incur additional costs and take a long amount of time. Additionally, there is often a price disparity from the time of purchase, meaning a seller may not even get its original market value back at the time of the sale. Why Are Stocks Liquid? Stocks are some of the most liquid assets in financial markets because these assets can be converted to cash in a short period of time in the event of any financial emergency. Is Tesla a Liquid Stock? Tesla is a liquid stock and while hugely volatile, is an integral part of the NASDAQ and is a globally recognized company. Additionally, the company is a popular single-stock CFD offering at many brokerages, with very high volumes. Is a Pension a Liquid Asset? Certain pensions are liquid assets once you have reached a retirement age. Until you are eligible to withdraw or collect a pension, without early withdrawal penalty, it is not considered a liquid asset.
The term liquidity refers to the process, speed, and ease of which a given asset or security can be converted into cash. Notably, liquidity surmises a retention in market price, with the most liquid assets representing cash. The most liquid asset of all is cash itself. · In economics, liquidity is defined by how efficiently and quickly an asset can be converted into usable cash without materially affecting its market price. · Nothing is more liquid than cash, while other assets represent varying degrees of liquidity. This can be differentiated as market liquidity or accounting liquidity.· Liquidity refers to a tangible construct that can be measures. The most common ways to do so include a current ratio, quick ratio, and cash ratio. What is the Definition of Liquidity? Liquidity is a common definition used in investing, banking, or the financial services space. Its primary function is to ascertain how quickly a given asset can be bought, sold, or exchanged without a disparity in market price. Which of the following assets is the most liquid? By definition, in terms of liquidity, cash is unequivocally seen as the most liquid asset in an economic sense. This is due to its widespread acceptance and ease of conversion into other assets, forms of cash, or currencies, etc. All other liquid assets must be able to be quickly and efficiently converted into cash, i.e., financial liquidity. This includes such things as stocks, commodities, or virtually any other construct that has an associated value. By extension, illiquid or non-liquid assets are not able to be quickly converted into cash. These assets, also known as tangible assets, can include such things as rare art or collectables, real estate, etc. Liquidity Spectrum Liquid assets can be defined primarily as either cash on hand or simply an asset that can be easily or readily converted into usable cash. It is important to note that cash is not uniformly liquid for several reasons. The below examples encompass all types of assets and their corresponding level of liquidity. Examples of Liquid Assets or Securities A good example of this is the US dollar, which is recognized or accepted globally, and backed by the US government or Federal Reserve Bank. Other major forms of cash include Euros, or major currencies. This differs notably from the legal tender in many emerging countries or others for political or economic reasons. Cash aside, assets such as stocks or equities, bonds and other securities, money market assets, marketable securities, US treasuries or T-notes, exchange-traded funds (ETFs), a savings account, and mutual funds serve as the most liquid assets. These are generally assumed to be quick assets. Each of these assets can be converted into cash either instantaneously, or via any brokerage platform, exchange, etc., often in as little as minutes or seconds. As such, these assets are liquid. Examples of Illiquid Assets or Securities Conversely, illiquid assets still retain importance and value, though are much more difficult to convert into cash. Common examples of this include land or real estate, intellectual property, or other forms of capital such as equipment or machinery. In the examples above, liquid assets are assumed to be convertible into cash without substantial fees or delays in time. Illiquid assets on the other hand often suffer from fees or additional conversion costs, processing times, ultimately creating a price disparity. The best example of an illiquid asset is a house. For many individuals this is the most valuable asset they will own in their entire lives. However, selling a house typically requires taxes, realtor fees, and other costs, in addition to time. Real estate or land also takes much longer to exchange into cash, relative to other assets. Types of Liquidity Overall, liquidity is a broad term that needs to be defined by two different measures: market liquidity and accounting liquidity. Both measures deal with different constructs or entities entirely, though are useful metrics with regards to individuals or financial markets. Market Liquidity Market liquidity is a broader term that is used by a market maker to measure the ease of which assets can be bought and sold at transparent prices, namely across exchanges, stock markets, or other financial sectors. This can include among others, a real estate or property market, market for fine arts and collectable, and other goods. Market Liquidity Example As mentioned above, certain financial markets are much more liquid than others. The degree to which stocks from large companies or foreign currencies can be exchanged is much easier than finding a readily available market for antiques, collectables, or other capital, regardless of utility. Overall, a stock market, financial brokerage, or exchange is considered to have the high market liquidity. This is because the difference between both the bid and ask prices between parties is very low. The lower the spread between these two prices, the more liquid a given market is. Additionally, low liquidity refers to a higher spread between two prices. Why Liquidity Varies and What Does Liquidity Mean in Stocks? Every asset has a variable level of liquidity meaning this can change depending on what is being analyzed. One can define liquidity in stocks or stock markets in the same way as in foreign exchange markets, brokers, commodities exchanges, and crypto exchanges. Additionally, how large the market is will also dictate liquidity. The foreign exchange market for example is currently the largest by trading volume with high liquidity due to cash flows. This is hardly surprising given that forms of cash or currencies are being exchanged. What is Liquidity in Stocks? A stock's liquidity refers to how rapidly shares of a stock can be bought or sold without largely impacting a stock price. By definition, liquidity in stocks varies for a number of reasons. Stocks with low liquidity may be difficult to sell and may cause you to take a bigger loss if you cannot sell the shares when you want to. In finance, the most liquid assets are always the most popular. By extension, if a spread between buyers and sellers increases, the market is considered to be less liquid. A good example of this is the real estate or property market. While highly valuable, there are large disparities between the purchase price and selling price of property, as well as the time associated in making these transactions, and additional fees incurred by other parties. Liquidity providers play a key role in this regard. Accounting Liquidity Unlike market liquidity, accounting liquidity measures something different entirely. Accounting liquidity is a measure by which either an individual or entity can meet their respective current financial obligations with the current liquid assets available to them. This includes paying off debts, overhead, or any other fixed costs associated with a business. Accounting liquidity is a functional comparison between one’s current liquid assets and their current liabilities. In the United States and other countries, companies and individuals have to reconcile accounting on a yearly basis. Accounting liquidity is an excellent measure that captures financial obligations due in a year. Accounting Liquidity Example Accounting liquidity itself can be differentiated by several ratios, controlling for how liquid assets are. These measures are useful tools for not just the individual or company in focus but for others that are trying to ascertain current financial health.As an example, accounting liquidity can measure any company’s current financial assets and compare them to its financial obligations. If there is a large disparity between these figures, or much more assets than obligations, a company can be considered to have a strong depth of liquidity.How to Calculate Liquidity Liquidity is of importance to investors, financial market participants, analysts, or even for an investment strategy. Calculating liquidity is a measure of firm or individual’s ability to utilize or harness current liquid assets to current cover short-term debt. This can be achieved using a total of four formulas: the current ratio, quick ratio, acid-test variation, and cash ratio. Current Ratio The current ratio is the easiest measure due to its lack of complexity. Quite simply, the current ratio measures a firm or individual’s current assets or those than can be sold within a calendar year, weighed against all current liabilities. Current Ratio = Current Assets/Current Liabilities If the current ratio’s value is greater than 1, then the entity in question can be assumed to reconcile its financial obligations using its current liquid assets. Highly liquid assets will correspond to higher numbers in this regard. Conversely, any number less than 1 indicates that current liquid assets are not enough to cover short-term obligations. Quick Ratio A quick ratio is a slightly more complex way of measuring accounting liquidity via a balance sheet. Unlike the current ratio, the quick ratio excludes current assets that are not as liquid as cash, cash equivalents, or other shorter-term investments. The quick ratio can be defined below by the following: Quick Ratio = (Cash or Cash Equivalents + Shorter-Term Investments + Accounts Receivable)/Current Liabilities Acid-Test Ratio The acid-test ratio is a variation of the quick ratio. The acid-test ratio seeks to deduct inventory from current assets, serving as a traditionally broader measure that is more forgiving to individuals or entities. Acid-Test Ratio = (Current Assets – Inventories – Prepaid Costs)/Current Liabilities Cash Ratio Finally, the cash ratio further isolates current assets, looking to measure only liquid assets that are designated as cash or cash equivalents. In this sense, the cash ratio is the most precise of the other liquidity ratios, excluding accounts receivable, inventories, or other assets. A more precise measure has its uses, namely regarding assessing financial strength in the face of an emergency, i.e., an unforeseen and time sensitive event. The cash ratio can help measure an entity or individual’s hypothesized solvency in the face of unexpected scenarios, events, etc. As such, the cash ratio is defined below: Cash Ratio = Cash and Cash Equivalents/Current Liabilities The cash ratio is not simply a doomsday tool but a highly practical measure when determining market value. In the financial services space, even large companies or profitable institutions can find themselves at liquidity risk due to unexpected events beyond their control. Why is Liquidity Important and Why it Matters to You? Liquidity is very important for not just financial markets but for individuals and investors. Liquid markets benefit all market participants and make it easier to buy and sell securities, stocks, collectables, etc. On an individual level, this is important for personal finance, as ordinary investors are able to better take advantage of trading opportunities. Additionally, high liquidity promotes financial health in companies in the same way it does for individuals. Conclusion – What Does Liquidity Mean? What is liquidity? This metric is a commonly used as a measure in the investing, banking, or financial services space. Liquidity determines how quickly a given asset can be bought, sold, or exchanged without a disparity in market price. Which of the following assets is the most liquid? – cash, stocks, real estate. Of all assets, cash or money is the most liquid, meaning it is the easiest to utilize. All other liquid assets must be able to be quickly and efficiently converted into cash. This includes such things as stocks, commodities, or virtually any other construct that has an associated value. Conversely, illiquid or non-liquid assets are not able to be quickly converted into cash. These assets, also known as tangible assets, can include such things as rare art or collectables, real estate, etc. Frequently Asked Questions About Liquidity Is Liquidity Good or Bad? The term liquidity refers to a measure and is neither good nor bad but is instead a metric of how convertible an asset is to cash. However, high liquidity is associated with lower risk, while a liquid stock is more likely to keep its value when being traded.Is a Home a Liquid Asset? A home or properly is not considered to be a liquid asset. Selling any property can incur additional costs and take a long amount of time. Additionally, there is often a price disparity from the time of purchase, meaning a seller may not even get its original market value back at the time of the sale. Why Are Stocks Liquid? Stocks are some of the most liquid assets in financial markets because these assets can be converted to cash in a short period of time in the event of any financial emergency. Is Tesla a Liquid Stock? Tesla is a liquid stock and while hugely volatile, is an integral part of the NASDAQ and is a globally recognized company. Additionally, the company is a popular single-stock CFD offering at many brokerages, with very high volumes. Is a Pension a Liquid Asset? Certain pensions are liquid assets once you have reached a retirement age. Until you are eligible to withdraw or collect a pension, without early withdrawal penalty, it is not considered a liquid asset.
Read this Term to the logic of your filter. Indeed, price gaps with high volatility associated to market liquidity drying up, will unlikely be a technical glitch to be filtered out.
But firstly, check if you (and your data provider) are using an anti-spike filter. And if you are using one, review how it works!
But in any case, make sure that you at least have a documented and understandable way of manually disabling it, in order to quickly manually restart the algorithms if need be.
Exception Handling
To generalize a bit from the spike filtering issue, the whole exception handling logic (spike, rejects, markets interruption, spread explosion, etc) from algos has been put heavily under pressure. Developers and traders will have to review this together. We have witnessed that traders often push this on to the developers as it is generally perceived as technical issues handling.
But on this particular day, we had proof that the market could really behave like a bugged one…
Liquidity Fragmentation
This is not about the handling of the event itself, but about one of its consequences. The liquidity environment and credit access have really changed since the SNB event. Some established prime brokers or liquidity providers have stopped or reduced their business while the risk appetite has dramatically been reduced.
It entailed an explosion of smaller market players acting as PoP or liquidity providers. So in case you are in the Liquidity Aggregation
Liquidity Aggregation
Aggregation or liquidity aggregation can be characterized as the process of gathering buy and sell orders from different sources and directing them to a given executing party. This is most commonly done from multiple sources to minimize the risks from using a single liquidity provider. By aggregating liquidity from multiple sources, the broker is able to increase the depth of market it offers to its clients and therefore deliver better fills on the order flow when compared to when it uses a single liquidity provider.In order for liquidity aggregation to deliver the above-mentioned benefits however, an appropriate aggregation engine is necessary. Different liquidity providers can deliver widely different quotes due to its decentralized nature.This is why the aggregation engines which are used to enable brokers and their clients to automate order execution via multiple liquidity providers are critical to the practical implementation of aggregation.There are several approaches to aggregation which can be both beneficial and detrimental. More liquidity providers don’t necessarily mean better fills for the clients. Liquidity in the FX MarketPresently, liquidity aggregation has become a fixture of the foreign exchange market. However, FX liquidity aggregation remains both a complex and technically challenging task in what has developed into an increasingly fragmented marketplace.In parallel, the industry has also seen the proliferation of trading venues, which only adds to this complexity. The overall aggregation business model has been faced with several challenges in recent years.This is due in large part to liquidity providers grappling with the reality of their clients failing to utilize their respective liquidity optimized ways. Instead, there is a vulnerability to leverage arbitrage opportunities rather than creating a stable and reliable stream of proper prices.For this reason, liquidity aggregation looms as a potential pain point moving forward for the FX industry.
Aggregation or liquidity aggregation can be characterized as the process of gathering buy and sell orders from different sources and directing them to a given executing party. This is most commonly done from multiple sources to minimize the risks from using a single liquidity provider. By aggregating liquidity from multiple sources, the broker is able to increase the depth of market it offers to its clients and therefore deliver better fills on the order flow when compared to when it uses a single liquidity provider.In order for liquidity aggregation to deliver the above-mentioned benefits however, an appropriate aggregation engine is necessary. Different liquidity providers can deliver widely different quotes due to its decentralized nature.This is why the aggregation engines which are used to enable brokers and their clients to automate order execution via multiple liquidity providers are critical to the practical implementation of aggregation.There are several approaches to aggregation which can be both beneficial and detrimental. More liquidity providers don’t necessarily mean better fills for the clients. Liquidity in the FX MarketPresently, liquidity aggregation has become a fixture of the foreign exchange market. However, FX liquidity aggregation remains both a complex and technically challenging task in what has developed into an increasingly fragmented marketplace.In parallel, the industry has also seen the proliferation of trading venues, which only adds to this complexity. The overall aggregation business model has been faced with several challenges in recent years.This is due in large part to liquidity providers grappling with the reality of their clients failing to utilize their respective liquidity optimized ways. Instead, there is a vulnerability to leverage arbitrage opportunities rather than creating a stable and reliable stream of proper prices.For this reason, liquidity aggregation looms as a potential pain point moving forward for the FX industry.
Read this Term business, the cost of connectivity investment is increasing in order to connect to more players and to manage the growing complexity of the market. Time to review the “build vs buy” decision you have made about connectivity management.
Be Passive!
With appetite for risk being restrained across the liquidity providers, the liquidity has diminished and logically the spreads have increased on many pairs. This makes it more expensive to trade “aggressively”, i.e. by crossing the spread with market orders.
The consequence is that it has become increasingly interesting to trade “passively” in order to save (or earn depending on how you see things) on the spread cost factor, by getting executed, at least for a portion of the order, inside the bid/ask spread.
Whether you develop yourselves, your execution algorithms or use third-party or banks ones (see my previous article on this topic, “Why Buy-Side Should Take Control of FX Algorithms”), think about your execution tactics, and ask yourself if adding some passivity in your algorithms could help.
Stay Away from Pegs or Heavily Controlled Currencies
Finally, this is not really about algorithmic trading, but it is particularly important for algo traders as many have been naturally inclined to make this mistake.
Only if you really (I mean really) know what you are doing here, and the risks associated with it, stay away from pegged or heavily controlled currencies. “Easy” money always comes with greater and unpredictable risk. It's probably not worth it. And if the CHF crisis was not enough to make you change your mind, think again about what we witnessed lately on the Chinese yuan pairs!
If you missed the first part of this article, then first head to read “Did Your FX algorithms Learn the Lessons from the CHF Storm?” where we have already discussed the particularities of forex in relation to flash crashes and runaway algorithms.
Spike Filtering
Many trading systems have incorrectly interpreted the CHF event, especially the important price gaps perceived either during the crash, or later, once trading activity resumed after a more or less long period of closed markets.
For example, when the data feeds were reactivated, the first quotations were significantly different from the last ones known by the systems. The event looked like a perfect price “spike”, i.e. a technical glitch with a non tradable price, which trading systems are taught to ignore.
Indeed, most trading systems incorporate some sort of “anti-spike” filter whose job is to protect the integrity of the data feed which is at the source of the trading decisions. A spike not filtered would quite often trigger orders at a non tradable price.
As you can guess, the trouble added by these anti-spike filters on top of the general panic, did not help.
An anti-spike system is much more difficult to design than how it seems… Let’s say you just filter based on a maximum percentage of variation of the rate, which we will call Y. If Y is too low, you will lose all volatile and fast movements, such as the flash crashes, the news such as NFP, etc. This can be dramatic. And if your Y is too high, you will potentially not filter the spikes… The very goal of such a filter.
You will probably end up moving up and down Y as the market evolves, and you will always experience issues. So the one price variation solution is not good enough.
To improve it, you may want to look at different and non-correlated data feeds. The good news is that with forex we have plenty of such feeds - interbank ones, different ECNs, futures quoted on exchanges, etc.
In addition to the price feed, it could also be useful to add Liquidity
Liquidity
The term liquidity refers to the process, speed, and ease of which a given asset or security can be converted into cash. Notably, liquidity surmises a retention in market price, with the most liquid assets representing cash. The most liquid asset of all is cash itself. · In economics, liquidity is defined by how efficiently and quickly an asset can be converted into usable cash without materially affecting its market price. · Nothing is more liquid than cash, while other assets represent varying degrees of liquidity. This can be differentiated as market liquidity or accounting liquidity.· Liquidity refers to a tangible construct that can be measures. The most common ways to do so include a current ratio, quick ratio, and cash ratio. What is the Definition of Liquidity? Liquidity is a common definition used in investing, banking, or the financial services space. Its primary function is to ascertain how quickly a given asset can be bought, sold, or exchanged without a disparity in market price. Which of the following assets is the most liquid? By definition, in terms of liquidity, cash is unequivocally seen as the most liquid asset in an economic sense. This is due to its widespread acceptance and ease of conversion into other assets, forms of cash, or currencies, etc. All other liquid assets must be able to be quickly and efficiently converted into cash, i.e., financial liquidity. This includes such things as stocks, commodities, or virtually any other construct that has an associated value. By extension, illiquid or non-liquid assets are not able to be quickly converted into cash. These assets, also known as tangible assets, can include such things as rare art or collectables, real estate, etc. Liquidity Spectrum Liquid assets can be defined primarily as either cash on hand or simply an asset that can be easily or readily converted into usable cash. It is important to note that cash is not uniformly liquid for several reasons. The below examples encompass all types of assets and their corresponding level of liquidity. Examples of Liquid Assets or Securities A good example of this is the US dollar, which is recognized or accepted globally, and backed by the US government or Federal Reserve Bank. Other major forms of cash include Euros, or major currencies. This differs notably from the legal tender in many emerging countries or others for political or economic reasons. Cash aside, assets such as stocks or equities, bonds and other securities, money market assets, marketable securities, US treasuries or T-notes, exchange-traded funds (ETFs), a savings account, and mutual funds serve as the most liquid assets. These are generally assumed to be quick assets. Each of these assets can be converted into cash either instantaneously, or via any brokerage platform, exchange, etc., often in as little as minutes or seconds. As such, these assets are liquid. Examples of Illiquid Assets or Securities Conversely, illiquid assets still retain importance and value, though are much more difficult to convert into cash. Common examples of this include land or real estate, intellectual property, or other forms of capital such as equipment or machinery. In the examples above, liquid assets are assumed to be convertible into cash without substantial fees or delays in time. Illiquid assets on the other hand often suffer from fees or additional conversion costs, processing times, ultimately creating a price disparity. The best example of an illiquid asset is a house. For many individuals this is the most valuable asset they will own in their entire lives. However, selling a house typically requires taxes, realtor fees, and other costs, in addition to time. Real estate or land also takes much longer to exchange into cash, relative to other assets. Types of Liquidity Overall, liquidity is a broad term that needs to be defined by two different measures: market liquidity and accounting liquidity. Both measures deal with different constructs or entities entirely, though are useful metrics with regards to individuals or financial markets. Market Liquidity Market liquidity is a broader term that is used by a market maker to measure the ease of which assets can be bought and sold at transparent prices, namely across exchanges, stock markets, or other financial sectors. This can include among others, a real estate or property market, market for fine arts and collectable, and other goods. Market Liquidity Example As mentioned above, certain financial markets are much more liquid than others. The degree to which stocks from large companies or foreign currencies can be exchanged is much easier than finding a readily available market for antiques, collectables, or other capital, regardless of utility. Overall, a stock market, financial brokerage, or exchange is considered to have the high market liquidity. This is because the difference between both the bid and ask prices between parties is very low. The lower the spread between these two prices, the more liquid a given market is. Additionally, low liquidity refers to a higher spread between two prices. Why Liquidity Varies and What Does Liquidity Mean in Stocks? Every asset has a variable level of liquidity meaning this can change depending on what is being analyzed. One can define liquidity in stocks or stock markets in the same way as in foreign exchange markets, brokers, commodities exchanges, and crypto exchanges. Additionally, how large the market is will also dictate liquidity. The foreign exchange market for example is currently the largest by trading volume with high liquidity due to cash flows. This is hardly surprising given that forms of cash or currencies are being exchanged. What is Liquidity in Stocks? A stock's liquidity refers to how rapidly shares of a stock can be bought or sold without largely impacting a stock price. By definition, liquidity in stocks varies for a number of reasons. Stocks with low liquidity may be difficult to sell and may cause you to take a bigger loss if you cannot sell the shares when you want to. In finance, the most liquid assets are always the most popular. By extension, if a spread between buyers and sellers increases, the market is considered to be less liquid. A good example of this is the real estate or property market. While highly valuable, there are large disparities between the purchase price and selling price of property, as well as the time associated in making these transactions, and additional fees incurred by other parties. Liquidity providers play a key role in this regard. Accounting Liquidity Unlike market liquidity, accounting liquidity measures something different entirely. Accounting liquidity is a measure by which either an individual or entity can meet their respective current financial obligations with the current liquid assets available to them. This includes paying off debts, overhead, or any other fixed costs associated with a business. Accounting liquidity is a functional comparison between one’s current liquid assets and their current liabilities. In the United States and other countries, companies and individuals have to reconcile accounting on a yearly basis. Accounting liquidity is an excellent measure that captures financial obligations due in a year. Accounting Liquidity Example Accounting liquidity itself can be differentiated by several ratios, controlling for how liquid assets are. These measures are useful tools for not just the individual or company in focus but for others that are trying to ascertain current financial health.As an example, accounting liquidity can measure any company’s current financial assets and compare them to its financial obligations. If there is a large disparity between these figures, or much more assets than obligations, a company can be considered to have a strong depth of liquidity.How to Calculate Liquidity Liquidity is of importance to investors, financial market participants, analysts, or even for an investment strategy. Calculating liquidity is a measure of firm or individual’s ability to utilize or harness current liquid assets to current cover short-term debt. This can be achieved using a total of four formulas: the current ratio, quick ratio, acid-test variation, and cash ratio. Current Ratio The current ratio is the easiest measure due to its lack of complexity. Quite simply, the current ratio measures a firm or individual’s current assets or those than can be sold within a calendar year, weighed against all current liabilities. Current Ratio = Current Assets/Current Liabilities If the current ratio’s value is greater than 1, then the entity in question can be assumed to reconcile its financial obligations using its current liquid assets. Highly liquid assets will correspond to higher numbers in this regard. Conversely, any number less than 1 indicates that current liquid assets are not enough to cover short-term obligations. Quick Ratio A quick ratio is a slightly more complex way of measuring accounting liquidity via a balance sheet. Unlike the current ratio, the quick ratio excludes current assets that are not as liquid as cash, cash equivalents, or other shorter-term investments. The quick ratio can be defined below by the following: Quick Ratio = (Cash or Cash Equivalents + Shorter-Term Investments + Accounts Receivable)/Current Liabilities Acid-Test Ratio The acid-test ratio is a variation of the quick ratio. The acid-test ratio seeks to deduct inventory from current assets, serving as a traditionally broader measure that is more forgiving to individuals or entities. Acid-Test Ratio = (Current Assets – Inventories – Prepaid Costs)/Current Liabilities Cash Ratio Finally, the cash ratio further isolates current assets, looking to measure only liquid assets that are designated as cash or cash equivalents. In this sense, the cash ratio is the most precise of the other liquidity ratios, excluding accounts receivable, inventories, or other assets. A more precise measure has its uses, namely regarding assessing financial strength in the face of an emergency, i.e., an unforeseen and time sensitive event. The cash ratio can help measure an entity or individual’s hypothesized solvency in the face of unexpected scenarios, events, etc. As such, the cash ratio is defined below: Cash Ratio = Cash and Cash Equivalents/Current Liabilities The cash ratio is not simply a doomsday tool but a highly practical measure when determining market value. In the financial services space, even large companies or profitable institutions can find themselves at liquidity risk due to unexpected events beyond their control. Why is Liquidity Important and Why it Matters to You? Liquidity is very important for not just financial markets but for individuals and investors. Liquid markets benefit all market participants and make it easier to buy and sell securities, stocks, collectables, etc. On an individual level, this is important for personal finance, as ordinary investors are able to better take advantage of trading opportunities. Additionally, high liquidity promotes financial health in companies in the same way it does for individuals. Conclusion – What Does Liquidity Mean? What is liquidity? This metric is a commonly used as a measure in the investing, banking, or financial services space. Liquidity determines how quickly a given asset can be bought, sold, or exchanged without a disparity in market price. Which of the following assets is the most liquid? – cash, stocks, real estate. Of all assets, cash or money is the most liquid, meaning it is the easiest to utilize. All other liquid assets must be able to be quickly and efficiently converted into cash. This includes such things as stocks, commodities, or virtually any other construct that has an associated value. Conversely, illiquid or non-liquid assets are not able to be quickly converted into cash. These assets, also known as tangible assets, can include such things as rare art or collectables, real estate, etc. Frequently Asked Questions About Liquidity Is Liquidity Good or Bad? The term liquidity refers to a measure and is neither good nor bad but is instead a metric of how convertible an asset is to cash. However, high liquidity is associated with lower risk, while a liquid stock is more likely to keep its value when being traded.Is a Home a Liquid Asset? A home or properly is not considered to be a liquid asset. Selling any property can incur additional costs and take a long amount of time. Additionally, there is often a price disparity from the time of purchase, meaning a seller may not even get its original market value back at the time of the sale. Why Are Stocks Liquid? Stocks are some of the most liquid assets in financial markets because these assets can be converted to cash in a short period of time in the event of any financial emergency. Is Tesla a Liquid Stock? Tesla is a liquid stock and while hugely volatile, is an integral part of the NASDAQ and is a globally recognized company. Additionally, the company is a popular single-stock CFD offering at many brokerages, with very high volumes. Is a Pension a Liquid Asset? Certain pensions are liquid assets once you have reached a retirement age. Until you are eligible to withdraw or collect a pension, without early withdrawal penalty, it is not considered a liquid asset.
The term liquidity refers to the process, speed, and ease of which a given asset or security can be converted into cash. Notably, liquidity surmises a retention in market price, with the most liquid assets representing cash. The most liquid asset of all is cash itself. · In economics, liquidity is defined by how efficiently and quickly an asset can be converted into usable cash without materially affecting its market price. · Nothing is more liquid than cash, while other assets represent varying degrees of liquidity. This can be differentiated as market liquidity or accounting liquidity.· Liquidity refers to a tangible construct that can be measures. The most common ways to do so include a current ratio, quick ratio, and cash ratio. What is the Definition of Liquidity? Liquidity is a common definition used in investing, banking, or the financial services space. Its primary function is to ascertain how quickly a given asset can be bought, sold, or exchanged without a disparity in market price. Which of the following assets is the most liquid? By definition, in terms of liquidity, cash is unequivocally seen as the most liquid asset in an economic sense. This is due to its widespread acceptance and ease of conversion into other assets, forms of cash, or currencies, etc. All other liquid assets must be able to be quickly and efficiently converted into cash, i.e., financial liquidity. This includes such things as stocks, commodities, or virtually any other construct that has an associated value. By extension, illiquid or non-liquid assets are not able to be quickly converted into cash. These assets, also known as tangible assets, can include such things as rare art or collectables, real estate, etc. Liquidity Spectrum Liquid assets can be defined primarily as either cash on hand or simply an asset that can be easily or readily converted into usable cash. It is important to note that cash is not uniformly liquid for several reasons. The below examples encompass all types of assets and their corresponding level of liquidity. Examples of Liquid Assets or Securities A good example of this is the US dollar, which is recognized or accepted globally, and backed by the US government or Federal Reserve Bank. Other major forms of cash include Euros, or major currencies. This differs notably from the legal tender in many emerging countries or others for political or economic reasons. Cash aside, assets such as stocks or equities, bonds and other securities, money market assets, marketable securities, US treasuries or T-notes, exchange-traded funds (ETFs), a savings account, and mutual funds serve as the most liquid assets. These are generally assumed to be quick assets. Each of these assets can be converted into cash either instantaneously, or via any brokerage platform, exchange, etc., often in as little as minutes or seconds. As such, these assets are liquid. Examples of Illiquid Assets or Securities Conversely, illiquid assets still retain importance and value, though are much more difficult to convert into cash. Common examples of this include land or real estate, intellectual property, or other forms of capital such as equipment or machinery. In the examples above, liquid assets are assumed to be convertible into cash without substantial fees or delays in time. Illiquid assets on the other hand often suffer from fees or additional conversion costs, processing times, ultimately creating a price disparity. The best example of an illiquid asset is a house. For many individuals this is the most valuable asset they will own in their entire lives. However, selling a house typically requires taxes, realtor fees, and other costs, in addition to time. Real estate or land also takes much longer to exchange into cash, relative to other assets. Types of Liquidity Overall, liquidity is a broad term that needs to be defined by two different measures: market liquidity and accounting liquidity. Both measures deal with different constructs or entities entirely, though are useful metrics with regards to individuals or financial markets. Market Liquidity Market liquidity is a broader term that is used by a market maker to measure the ease of which assets can be bought and sold at transparent prices, namely across exchanges, stock markets, or other financial sectors. This can include among others, a real estate or property market, market for fine arts and collectable, and other goods. Market Liquidity Example As mentioned above, certain financial markets are much more liquid than others. The degree to which stocks from large companies or foreign currencies can be exchanged is much easier than finding a readily available market for antiques, collectables, or other capital, regardless of utility. Overall, a stock market, financial brokerage, or exchange is considered to have the high market liquidity. This is because the difference between both the bid and ask prices between parties is very low. The lower the spread between these two prices, the more liquid a given market is. Additionally, low liquidity refers to a higher spread between two prices. Why Liquidity Varies and What Does Liquidity Mean in Stocks? Every asset has a variable level of liquidity meaning this can change depending on what is being analyzed. One can define liquidity in stocks or stock markets in the same way as in foreign exchange markets, brokers, commodities exchanges, and crypto exchanges. Additionally, how large the market is will also dictate liquidity. The foreign exchange market for example is currently the largest by trading volume with high liquidity due to cash flows. This is hardly surprising given that forms of cash or currencies are being exchanged. What is Liquidity in Stocks? A stock's liquidity refers to how rapidly shares of a stock can be bought or sold without largely impacting a stock price. By definition, liquidity in stocks varies for a number of reasons. Stocks with low liquidity may be difficult to sell and may cause you to take a bigger loss if you cannot sell the shares when you want to. In finance, the most liquid assets are always the most popular. By extension, if a spread between buyers and sellers increases, the market is considered to be less liquid. A good example of this is the real estate or property market. While highly valuable, there are large disparities between the purchase price and selling price of property, as well as the time associated in making these transactions, and additional fees incurred by other parties. Liquidity providers play a key role in this regard. Accounting Liquidity Unlike market liquidity, accounting liquidity measures something different entirely. Accounting liquidity is a measure by which either an individual or entity can meet their respective current financial obligations with the current liquid assets available to them. This includes paying off debts, overhead, or any other fixed costs associated with a business. Accounting liquidity is a functional comparison between one’s current liquid assets and their current liabilities. In the United States and other countries, companies and individuals have to reconcile accounting on a yearly basis. Accounting liquidity is an excellent measure that captures financial obligations due in a year. Accounting Liquidity Example Accounting liquidity itself can be differentiated by several ratios, controlling for how liquid assets are. These measures are useful tools for not just the individual or company in focus but for others that are trying to ascertain current financial health.As an example, accounting liquidity can measure any company’s current financial assets and compare them to its financial obligations. If there is a large disparity between these figures, or much more assets than obligations, a company can be considered to have a strong depth of liquidity.How to Calculate Liquidity Liquidity is of importance to investors, financial market participants, analysts, or even for an investment strategy. Calculating liquidity is a measure of firm or individual’s ability to utilize or harness current liquid assets to current cover short-term debt. This can be achieved using a total of four formulas: the current ratio, quick ratio, acid-test variation, and cash ratio. Current Ratio The current ratio is the easiest measure due to its lack of complexity. Quite simply, the current ratio measures a firm or individual’s current assets or those than can be sold within a calendar year, weighed against all current liabilities. Current Ratio = Current Assets/Current Liabilities If the current ratio’s value is greater than 1, then the entity in question can be assumed to reconcile its financial obligations using its current liquid assets. Highly liquid assets will correspond to higher numbers in this regard. Conversely, any number less than 1 indicates that current liquid assets are not enough to cover short-term obligations. Quick Ratio A quick ratio is a slightly more complex way of measuring accounting liquidity via a balance sheet. Unlike the current ratio, the quick ratio excludes current assets that are not as liquid as cash, cash equivalents, or other shorter-term investments. The quick ratio can be defined below by the following: Quick Ratio = (Cash or Cash Equivalents + Shorter-Term Investments + Accounts Receivable)/Current Liabilities Acid-Test Ratio The acid-test ratio is a variation of the quick ratio. The acid-test ratio seeks to deduct inventory from current assets, serving as a traditionally broader measure that is more forgiving to individuals or entities. Acid-Test Ratio = (Current Assets – Inventories – Prepaid Costs)/Current Liabilities Cash Ratio Finally, the cash ratio further isolates current assets, looking to measure only liquid assets that are designated as cash or cash equivalents. In this sense, the cash ratio is the most precise of the other liquidity ratios, excluding accounts receivable, inventories, or other assets. A more precise measure has its uses, namely regarding assessing financial strength in the face of an emergency, i.e., an unforeseen and time sensitive event. The cash ratio can help measure an entity or individual’s hypothesized solvency in the face of unexpected scenarios, events, etc. As such, the cash ratio is defined below: Cash Ratio = Cash and Cash Equivalents/Current Liabilities The cash ratio is not simply a doomsday tool but a highly practical measure when determining market value. In the financial services space, even large companies or profitable institutions can find themselves at liquidity risk due to unexpected events beyond their control. Why is Liquidity Important and Why it Matters to You? Liquidity is very important for not just financial markets but for individuals and investors. Liquid markets benefit all market participants and make it easier to buy and sell securities, stocks, collectables, etc. On an individual level, this is important for personal finance, as ordinary investors are able to better take advantage of trading opportunities. Additionally, high liquidity promotes financial health in companies in the same way it does for individuals. Conclusion – What Does Liquidity Mean? What is liquidity? This metric is a commonly used as a measure in the investing, banking, or financial services space. Liquidity determines how quickly a given asset can be bought, sold, or exchanged without a disparity in market price. Which of the following assets is the most liquid? – cash, stocks, real estate. Of all assets, cash or money is the most liquid, meaning it is the easiest to utilize. All other liquid assets must be able to be quickly and efficiently converted into cash. This includes such things as stocks, commodities, or virtually any other construct that has an associated value. Conversely, illiquid or non-liquid assets are not able to be quickly converted into cash. These assets, also known as tangible assets, can include such things as rare art or collectables, real estate, etc. Frequently Asked Questions About Liquidity Is Liquidity Good or Bad? The term liquidity refers to a measure and is neither good nor bad but is instead a metric of how convertible an asset is to cash. However, high liquidity is associated with lower risk, while a liquid stock is more likely to keep its value when being traded.Is a Home a Liquid Asset? A home or properly is not considered to be a liquid asset. Selling any property can incur additional costs and take a long amount of time. Additionally, there is often a price disparity from the time of purchase, meaning a seller may not even get its original market value back at the time of the sale. Why Are Stocks Liquid? Stocks are some of the most liquid assets in financial markets because these assets can be converted to cash in a short period of time in the event of any financial emergency. Is Tesla a Liquid Stock? Tesla is a liquid stock and while hugely volatile, is an integral part of the NASDAQ and is a globally recognized company. Additionally, the company is a popular single-stock CFD offering at many brokerages, with very high volumes. Is a Pension a Liquid Asset? Certain pensions are liquid assets once you have reached a retirement age. Until you are eligible to withdraw or collect a pension, without early withdrawal penalty, it is not considered a liquid asset.
Read this Term to the logic of your filter. Indeed, price gaps with high volatility associated to market liquidity drying up, will unlikely be a technical glitch to be filtered out.
But firstly, check if you (and your data provider) are using an anti-spike filter. And if you are using one, review how it works!
But in any case, make sure that you at least have a documented and understandable way of manually disabling it, in order to quickly manually restart the algorithms if need be.
Exception Handling
To generalize a bit from the spike filtering issue, the whole exception handling logic (spike, rejects, markets interruption, spread explosion, etc) from algos has been put heavily under pressure. Developers and traders will have to review this together. We have witnessed that traders often push this on to the developers as it is generally perceived as technical issues handling.
But on this particular day, we had proof that the market could really behave like a bugged one…
Liquidity Fragmentation
This is not about the handling of the event itself, but about one of its consequences. The liquidity environment and credit access have really changed since the SNB event. Some established prime brokers or liquidity providers have stopped or reduced their business while the risk appetite has dramatically been reduced.
It entailed an explosion of smaller market players acting as PoP or liquidity providers. So in case you are in the Liquidity Aggregation
Liquidity Aggregation
Aggregation or liquidity aggregation can be characterized as the process of gathering buy and sell orders from different sources and directing them to a given executing party. This is most commonly done from multiple sources to minimize the risks from using a single liquidity provider. By aggregating liquidity from multiple sources, the broker is able to increase the depth of market it offers to its clients and therefore deliver better fills on the order flow when compared to when it uses a single liquidity provider.In order for liquidity aggregation to deliver the above-mentioned benefits however, an appropriate aggregation engine is necessary. Different liquidity providers can deliver widely different quotes due to its decentralized nature.This is why the aggregation engines which are used to enable brokers and their clients to automate order execution via multiple liquidity providers are critical to the practical implementation of aggregation.There are several approaches to aggregation which can be both beneficial and detrimental. More liquidity providers don’t necessarily mean better fills for the clients. Liquidity in the FX MarketPresently, liquidity aggregation has become a fixture of the foreign exchange market. However, FX liquidity aggregation remains both a complex and technically challenging task in what has developed into an increasingly fragmented marketplace.In parallel, the industry has also seen the proliferation of trading venues, which only adds to this complexity. The overall aggregation business model has been faced with several challenges in recent years.This is due in large part to liquidity providers grappling with the reality of their clients failing to utilize their respective liquidity optimized ways. Instead, there is a vulnerability to leverage arbitrage opportunities rather than creating a stable and reliable stream of proper prices.For this reason, liquidity aggregation looms as a potential pain point moving forward for the FX industry.
Aggregation or liquidity aggregation can be characterized as the process of gathering buy and sell orders from different sources and directing them to a given executing party. This is most commonly done from multiple sources to minimize the risks from using a single liquidity provider. By aggregating liquidity from multiple sources, the broker is able to increase the depth of market it offers to its clients and therefore deliver better fills on the order flow when compared to when it uses a single liquidity provider.In order for liquidity aggregation to deliver the above-mentioned benefits however, an appropriate aggregation engine is necessary. Different liquidity providers can deliver widely different quotes due to its decentralized nature.This is why the aggregation engines which are used to enable brokers and their clients to automate order execution via multiple liquidity providers are critical to the practical implementation of aggregation.There are several approaches to aggregation which can be both beneficial and detrimental. More liquidity providers don’t necessarily mean better fills for the clients. Liquidity in the FX MarketPresently, liquidity aggregation has become a fixture of the foreign exchange market. However, FX liquidity aggregation remains both a complex and technically challenging task in what has developed into an increasingly fragmented marketplace.In parallel, the industry has also seen the proliferation of trading venues, which only adds to this complexity. The overall aggregation business model has been faced with several challenges in recent years.This is due in large part to liquidity providers grappling with the reality of their clients failing to utilize their respective liquidity optimized ways. Instead, there is a vulnerability to leverage arbitrage opportunities rather than creating a stable and reliable stream of proper prices.For this reason, liquidity aggregation looms as a potential pain point moving forward for the FX industry.
Read this Term business, the cost of connectivity investment is increasing in order to connect to more players and to manage the growing complexity of the market. Time to review the “build vs buy” decision you have made about connectivity management.
Be Passive!
With appetite for risk being restrained across the liquidity providers, the liquidity has diminished and logically the spreads have increased on many pairs. This makes it more expensive to trade “aggressively”, i.e. by crossing the spread with market orders.
The consequence is that it has become increasingly interesting to trade “passively” in order to save (or earn depending on how you see things) on the spread cost factor, by getting executed, at least for a portion of the order, inside the bid/ask spread.
Whether you develop yourselves, your execution algorithms or use third-party or banks ones (see my previous article on this topic, “Why Buy-Side Should Take Control of FX Algorithms”), think about your execution tactics, and ask yourself if adding some passivity in your algorithms could help.
Stay Away from Pegs or Heavily Controlled Currencies
Finally, this is not really about algorithmic trading, but it is particularly important for algo traders as many have been naturally inclined to make this mistake.
Only if you really (I mean really) know what you are doing here, and the risks associated with it, stay away from pegged or heavily controlled currencies. “Easy” money always comes with greater and unpredictable risk. It's probably not worth it. And if the CHF crisis was not enough to make you change your mind, think again about what we witnessed lately on the Chinese yuan pairs!