The month of May is American Jewish History Month, so for this entire month I will continue share the stories of important Jewish figures in American finance. Today, I will share the story of Jim Simons who was a mathematician, hedge fund manager, and philanthropist whose contributions spanned multiple fields and was perhaps the most successful investor in history.
Born on April 25, 1938, in Massachusetts, Simons showed an early passion for mathematics, earning a PhD from the University of California, Berkeley at just 23 years old. His mathematical work, particularly in differential geometry, led to the development of the Chern-Simons form, which has applications in string theory and quantum field theory. Simons's mathematical work primarily focused on the geometry and topology of manifolds.
In 1964, Simons worked with the National Security Agency to break codes. Between 1964 and 1968, he was on the research staff of the Communications Research Division of the Institute for Defense Analysis, or IDA, and also taught mathematics at the MIT and Harvard University. After being forced to leave the IDA due to his public opposition to the Vietnam War, he joined the faculty at Stony Brook University.
From 1968 to 1978, he chaired Stony Brook's math department. Simons founded the hedge fund management firm Renaissance Technologies. He gradually realized that it should be possible to make mathematical models of the data he was collecting. He hired Noble Laureates and scientists outside the world of traditional finance as his employees to implement these strategies.
Renaissance established the Medallion Fund in 1988. The Medallion Fund, which is closed to outside investors, has earned over $100 billion in trading profits since its inception. This is a 66.1% average gross annual return or a 39.1% average net annual return between 1988 and 2018. By comparison, Warren Buffett's annualized return is just under 20% annually.
Despite his financial success, Simons remained deeply committed to education and research. In 1994, he and his wife, Marilyn, founded the Simons Foundation, which supports mathematics and fundamental sciences. The foundation has donated hundreds of millions to institutions like MIT, UC Berkeley, and Stony Brook University.
A few fun facts about Simmons. He once rode a motor scooter from Boston to Bogotá, Colombia and he had a lifelong habit of smoking two packs of cigarettes a day. In 2016, an asteroid (6618 Jimsimons) was named after him in recognition of his contributions to mathematics and philanthropy.
Simons passed away on May 10, 2024, leaving behind a legacy that continues to shape mathematics, finance, and scientific research. At the time of his death, Simons's net worth was estimated to be $31.4 billion, making him the 55th-richest person in the world.