Jim Simons has died

Original Article ↗ Hacker News Discussion ↗

Article access and basic details

  • Several readers report the Simons Foundation page rendering blank or being blocked by ad blockers; workarounds include private windows, other browsers, or an archive link.
  • The obituary notes his death at 86, his roles as mathematician, quantitative investor, and major philanthropist in math and basic sciences.

Life, career, and Renaissance Technologies

  • Commenters emphasize his exceptional mathematical contributions (e.g., geometry/topology, Chern–Simons theory) and his later creation of Renaissance Technologies as an outsider to traditional finance.
  • Multiple posts reference claims that the Medallion fund produced extraordinary returns (variously cited as ~30–40% after fees, or even 60%+ gross, over decades), with discussion of capacity limits and why profits couldn’t simply compound indefinitely.
  • Some argue his success is a decisive counterexample to strong-form efficient market hypotheses; others note tax optimization, leverage, and special pricing as partial explanations.

Insider trading, politics, and ethics

  • A minority speculate about insider trading or privileged information; others strongly push back, calling that baseless and arguing such consistency can’t come from insider trading alone.
  • There is debate over whether sophisticated quant trading is socially beneficial or merely extractive; some say it improves liquidity and pricing, others question its value.
  • Renaissance’s political donations and a co-executive’s role in Trump/Brexit-aligned efforts are mentioned, with mixed views on what this implies.

Quant careers and culture

  • Many discuss the extreme selectivity of Renaissance and similar firms, heavy emphasis on math/statistics in interviews, and the appeal of quant work as intellectually challenging “puzzles.”
  • Some recount failed interview attempts or phone screens heavy on GRE-style math and probability.

Philanthropy and impact on math, science, and education

  • Strong consensus that his philanthropy has been transformative: Simons Foundation, Simons Institute (Berkeley), Simons Center at Stony Brook, Quanta Magazine, Numberphile sponsorship, Simons Observatory, autism/neuroscience initiatives, Math for America, MoMath, arXiv support, MSRI and other centers, travel grants and conferences.
  • Several academics describe direct benefits from Simons-funded institutes, conferences, and grants, sometimes noting the unusual level of luxury.

Legacy and future

  • Many express admiration for his combination of deep science, financial success, and large-scale giving, seeing him as an unusually “good” billionaire.
  • Others worry about whether his foundation and institutes can preserve his mission without drifting into bureaucratic or mission creep.
  • His lifelong heavy smoking, cause of death (not clearly specified beyond age and smoking), and a hoped‑for but possibly unfinished memoir are briefly discussed.
  • Numerous links are shared to the Numberphile interview, the book The Man Who Solved the Market, and a long Acquired podcast episode on Renaissance.