Arcesium LLC

About Arcesium LLC

Arcesium LLC is a New York-based financial technology and professional services firm founded in 2015 as a joint venture between Blackstone and D. E. Shaw. The company delivers post-trade, middle-office, and data management solutions to hedge funds, private equity firms, and institutional asset managers. Its cloud-native technology platform integrates portfolio analytics, reconciliations, corporate actions, and investor services, supported by a team of technologists, accountants, and financial domain experts operating across North America, Europe, and Asia.