I srael "Izzy" Englander is an American billionaire hedge fund manager and a legendary figure on Wall Street. He is the founder and CEO of Millennium Management, one of the largest and most successful multi-strategy hedge funds in the world. The son of Polish-Jewish immigrants, he grew up in Brooklyn and started trading stocks in high school. He has built his entire career in the world of financial trading.

He founded Millennium in 1989 with a relatively small amount of capital and has since built it into a massive global investment firm with tens of billions of dollars under management. The firm operates on a platform model, with hundreds of separate and independent portfolio management teams that trade across a wide range of strategies. This model allows the firm to generate consistent, low-volatility returns. Englander is known for being intensely private and for his focus on risk management, which has been a key to his firm's enduring success.