Henry Laufer

Henry B. Laufer (born 1945) is an American mathematician, investor, and philanthropist renowned for his contributions to quantitative finance as chief scientist and vice president of research at Renaissance Technologies from 1992 to 2009. A former professor of mathematics at Stony Brook University, where he collaborated with James Simons on advanced mathematical applications, Laufer played a key role in developing statistical and computational models that underpinned the firm's trading strategies, including those powering the Medallion Fund's legendary returns exceeding 66% annually before fees over decades. Post-retirement, Laufer has focused on philanthropy, providing substantial funding alongside his wife Marsha for mathematical and scientific initiatives, such as the $70 million gift to the Mathematical Sciences Research Institute (renamed the Simons Laufer Mathematical Sciences Institute) and the establishment of the Laufer Center for Physical and Quantitative Biology at Stony Brook University. His academic work includes research in algebraic topology and complex singularities, reflected in publications like Normal Two-Dimensional Singularities.