Castle Securities acquires Morgan Stanley's U.S. stock options electronic market-making business

Zhitong
2025.07.10 19:52

According to informed sources, Citadel Securities has acquired the electronic market-making business focused on U.S. stock options from Morgan Stanley. This further consolidates Citadel Securities' dominant position in this popular derivatives field. The trading firm founded by billionaire Ken Griffin has acquired Morgan Stanley's on-exchange options business and taken over a large portfolio of stock options positions. The deal includes dedicated seats on exchanges such as the Chicago Board Options Exchange, Nasdaq, New York Stock Exchange, and MIAX. Due to the involvement of non-public information, the sources requested anonymity