Two Sigma

Co-founded by David Siegel and John Overdeck (both ex-D.E. Shaw; Overdeck a former math olympiad medalist). Data-science-first systematic firm.

A data-science-and-ML-driven systematic manager, peer to RenTec and D.E. Shaw. The 13F long book is dominated by exactly the AI trade — NVDA is the single largest reported position, followed by Apple, Amazon, Alphabet and Tesla (Mag 7 across the top). The reported portfolio value roughly doubled QoQ (to ~$124B), reflecting gross/leveraged positioning and option overlays rather than a doubling of conviction. Read the holdings as factor/ML output.