Eladian Partners, a high-frequency trading firm founded by two former Citigroup directors, has joined the London Stock Exchange – its first European bourse membership.

Eladian Partners Europe LLP joined the LSE yesterday, according to a notice posted by the exchange. It is authorised to trade on the LSE's main equities market, SETS, and its international order book - a fast-growing market of the exchange that offers trading primarily in Russian depository receipts. Bank of America Merril Lynch will act as its settlement agent, the notice said.