<p>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</p>

<p>Castle Securities acquires Morgan Stanley's electronic market-making business for U.S. stock options, further consolidating its dominant position in the derivatives field. The transaction includes taking over Morgan Stanley's on-exchange options business and a large portfolio of stock options positions, involving dedicated seats across multiple exchanges</p>

城堡证券收购摩根士丹利的美股期权电子做市业务