Jim Simons

Founder, Renaissance Technologies

Quant / Multi-StratAUM $63.93BPositions 3,213Q1 2026

🏆 Clone Portfolio Track Record

Rank #11 of 69 by 3-year alpha vs SPY · mechanically replicating this book, rebalanced at filing dates

A strong clone record is a track record, not a forecast — tested across a decade it doesn't reliably repeat. See what actually holds up →

Analyst Take · Q1 2026

AI

RenTech's $63.9B quant book turned over as usual — a brand-new $780M AAPL position is the largest single print, alongside exits from F, T and AMCR and deep cuts to NFLX (−100%), COST (−97%) and TSLA (−85%). Signals here are model-driven and short-lived by design. Still, clone rank #10 (+10.2pt alpha) shows the aggregate has been worth watching.

Generated quarterly from the filing data itself — holdings, changes, sector mix and clone-performance rank. Not investment advice.

Jim Simons was a mathematician who founded Renaissance Technologies, the most successful quantitative hedge fund in history. The firm's Medallion Fund generated average annual returns of over 66% before fees from 1988 to 2018. Renaissance uses mathematical models and algorithms to identify market patterns.