LMAX Group is a global financial technology company which operates multiple institutional execution venues for electronic foreign exchange (FX) and crypto currency trading.

[6] The company also open-sourced some components of its technology, including Disruptor concurrency software, to support the extremely low latency requirements of its trade processing servers.

[8] LMAX Group has contributed to the industry's understanding of execution factors and trading costs across different liquidity pools by publishing several research papers and a transaction cost analysis (TCA) white paper which resulted in the development of industry-leading FX TCA methodology and analytical tools.

[9][10] In July 2021, private equity firm JC Flowers agreed to pay US$300 million to acquire a 30% stake in LMAX, bringing the valuation of the Group to $1 billion.

The central limit order book (CLOB) execution model offers streaming firm liquidity[12] from top tier banks and non-bank institutions, transparent price discovery, no 'last look' rejections and full control over trading strategy and costs.