D aniel Loeb is an American billionaire investor and the founder and CEO of Third Point, a New York-based hedge fund. He is one of the most well-known and outspoken activist investors in the world, famous for his aggressive campaigns and his sharply written, often scathing letters to the management and boards of his target companies. He founded Third Point in 1995 with a small amount of capital and has built it into a major global investment firm.

Loeb's investment strategy is event-driven and opportunistic, investing across the capital structure in equity and credit. As an activist, he takes large stakes in public companies that he believes are underperforming and publicly agitates for changes, such as asset sales, management shakeups, or changes in capital allocation, to unlock value for shareholders. His high-profile campaigns against companies like Sony, Sotheby's, and Yahoo have made him one of the most feared and influential figures on Wall Street. He is also a prominent art collector and philanthropist.