Senate Democrats · CC BY 2.0

Founded Pershing Square Capital Management and built a reputation as one of Wall Street's most public activist investors, taking large stakes in companies like Herbalife, Chipotle, and Canadian Pacific and pushing openly for changes in strategy and management. A longtime Democratic donor, he broke with the party to endorse Donald Trump in 2024, and became one of the most vocal defenders of Israel and a critic of campus protests after the October 7 attacks.