Transaction Network Services (TNS) has closed its acquisition of BT's Radianz business, bringing the telecommunications giant's financial connectivity arm under the control of the Koch Industries-backed infrastructure provider.

The acquisition unites TNS's ultra-low-latency trading network with Radianz's cloud platform, which connects thousands of brokers, exchanges, and clearinghouses.

Radianz has operated for more than two decades as a neutral network linking market participants to trading venues, market data feeds, and financial applications.

TNS Acquires BT Radianz

The deal transfers equity in Radianz entities across the US and UK, while TNS acquires assets spanning Latin America, Europe, the Middle East, Africa, Asia, and Australasia. Radianz historically served thousands of financial sites through a shared infrastructure model, connecting institutions to more than 400 application providers.

"Today marks an important milestone for TNS and our clients as we combine the strengths of two established leaders in financial connectivity Connectivity Connectivity is defined as a term used for connecting devices to each other. In most cases, this refers to computer networking and more specifically includes bridges, routers, switches, gateways, and service as well as local networks. Connectivity can refer to simple forms, such as connecting a home or office to the internet or even connecting a digital camera to a computer or printer. Connectivity in FinanceConnectivity has taken on new meaning with the growth of fintech and Big Data collectio Connectivity is defined as a term used for connecting devices to each other. In most cases, this refers to computer networking and more specifically includes bridges, routers, switches, gateways, and service as well as local networks. Connectivity can refer to simple forms, such as connecting a home or office to the internet or even connecting a digital camera to a computer or printer. Connectivity in FinanceConnectivity has taken on new meaning with the growth of fintech and Big Data collectio Read this Term," said Tom Lazenga, General Manager of TNS Financial Markets.

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"We look forward to delivering expanded access to markets, counterparties and applications, while maintaining the network and platform diversity that institutions rely on for resilience and choice."

The transaction required regulatory approvals across multiple jurisdictions including the UK, Australia, Turkey, Italy, Japan, and India. BT first announced the agreement in September 2025, with completion originally targeted for the first half of 2026.

TNS Expands Trading Infrastructure Portfolio

The firm has been expanding its financial markets footprint through partnerships and network deployments. In September 2025, TNS secured a partnership with 24X National Exchange to provide market data connectivity for the startup Startup A company operating within its first stage of investing is known as a startup. While startups may give the impression that the company must be new, that is not always the case.Many companies can have this designation after nearly three years of existence. Typically, a company exits the startup status after a period between 3 to 5 years or after successful funding rounds where capital is acquired. Startups tend to derive out of the belief that there is a demand for a service or product which is c A company operating within its first stage of investing is known as a startup. While startups may give the impression that the company must be new, that is not always the case.Many companies can have this designation after nearly three years of existence. Typically, a company exits the startup status after a period between 3 to 5 years or after successful funding rounds where capital is acquired. Startups tend to derive out of the belief that there is a demand for a service or product which is c Read this Term's round-the-clock US stock trading platform, targeting Asian investors trading during local business hours.

TNS also integrated connectivity with Broadridge's futures and options platform, serving as the vendor of record for global exchange connectivity.

BT Refocuses on UK Telecommunications

For BT, the sale aligns with a broader retreat from international financial services infrastructure. The British telecom has been reshaping itself around UK-focused telecommunications while shedding global business units.

"Today's announcement is another key milestone in focusing our international business on what it does best: providing secure multi-cloud connectivity to large organisations globally," said Bas Burger, CEO of BT International, when the deal was first announced.