Turquoise Services Limited (Turquoise) is an authorised investment firm, regulated by the Financial Services Authority providing pan-European lit and dark equity trading. Since February 2010, Turquoise has been majority owned by London Stock Exchange Group.

The Turquoise MTF comprises the Integrated Book and Midpoint Book, each covering some 1,700 securities over 17 countries. Unique functionality in the Integrated Book combines visible and non-displayed orders to deliver increased likelihood of execution and price improvement. The Midpoint Book is a non-displayed execution service where trades execute at the midpoint of the bid-ask spread. Non-displayed orders in the Turquoise MTF qualify for pre-trade transparency waivers specified by MiFID and are subject to immediate post-trade transparency.

TQ Lens, Turquoise's liquidity aggregation service parses incoming orders and distributes them according to a series of sophisticated algorithms to otherwise inaccessible, fragmented liquidity sources. As such, it mediates access to the multiple liquidity partners via a single, independent connection.

Users of the Turquoise MTF and TQ Lens benefit from fully risk-managed clearing solutions, and industry-leading market surveillance to ensure fair and orderly operations.

Membership is uniformly open to qualified firms, with members today ranging from the largest global banks and brokers to institutions with local, regional and sector focus, and specialist trading and market-making firms.