The firm and the foundation are twin enterprises of Republican megadonor Jeff Yass, and a small group of allies. The foundation is run by Yass and other veteran Susquehanna executives, according to the documents that are current through 2022. The Susquehanna Foundation is one of two foundations that Yass and his closest friends have funded and led. The other foundation is even less well known: the Claws Foundation. Similar to Susquehanna, Claws is the charitable arm of one person: Arthur Dantchik, a co-founder of Susquehanna International Group with Yass, is the sole listed donor to Claws Foundation.

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Persons: Jeff Yass, Arthur Dantchik, Dantchik, Brendan Fischer, Summer Lee, Donald Trump, Jeffrey Yass Organizations: Republican, Susquehanna Foundation, Susquehanna International Group, Susquehanna, Claws Foundation, Susquehanna International, Sterling Foundation Management, CNBC, Cato Institute, Institute for Justice, Supreme, Atlas Network, Competitive Enterprise, Competitive Enterprise Institute, Susquehanna Growth Equity Fund III, Moderate PAC, Democratic Rep, Politico, Democratic Locations: Yass, Bala Cynwyd, Pennsylvania, Susquehanna, Virginia, Dantchik, Washington, Pitchbook