XTX Markets Chief Technology Officer Joshua Leahy has left the firm, the company confirmed in an email to Finance Magnates. The departure ends more than a decade at the quantitative trading firm.

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He has also stepped down as a director of XTX Markets Limited. A Companies House filing shows his directorship ended on 30 March 2026, with the filing recorded today (Monday).

Founded in 2015, XTX Markets has grown into one of the world’s largest algorithmic trading firms. It handles about $250 billion in daily trading volume across 35 countries. The company employs more than 250 people globally. It has expanded beyond its original focus on foreign exchange into equities, fixed income, commodities, and cryptocurrencies.

XTX Confirms Leahy CTO Exit

The company confirmed that Leahy has exited his CTO role. The filing and confirmation together indicate his full departure from the firm. Alex Gerko, CEO of XTX Markets, commented on the exit, saying: “Leahy has informed us of his decision to leave the firm. We are grateful to Josh for his outstanding contribution to XTX since its inception.”

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Leahy previously served as a senior technology executive at XTX Markets. He worked on building and scaling its machine-learning -driven trading infrastructure and engineering systems.

XTX Earnings Rise on Volatility Gains

XTX Markets reported higher earnings for 2024, supported by increased market volatility and continued expansion of its trading operations.

The company’s three main UK entities generated combined revenue of £2.74 billion in 2024, up from £2 billion in 2023. Net profit rose to £1.28 billion, compared with £835 million in the previous year, according to company filings.

XTX Technologies accounted for the largest share of revenue at £2.04 billion. XTX Markets Trading Limited reported £636 million, while XTX Markets Limited contributed £61 million.

The company also reported higher staff compensation at its main UK entity, with average pay rising compared with the previous year.