Ken Griffin's firm is seeking around $40 million over claims a British hedge fund obtained a secret trading strategy from a senior trader at Citadel Securities. Gift Article 10 Remaining As a ...

Citadel Securities reached a truce with a British hedge fund manager over the attempted hiring of a senior trader, ending a lawsuit that was set to consider the makeup of a secret algorithm. Kenneth C ...

SEOUL, Jan 27 (Reuters) - South Korea's financial regulator has imposed a fine of 11.88 billion won ($9.66 million) on U.S.-based Citadel Securities, saying it disturbed the local stock market with ...

A trader who works for the hedge fund owned by Illinois’ richest man took the stand for the government in federal court Wednesday but revealed little about how Citadel uses complicated computer ...