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.
- Not open — Not an open-ended vehicle — analysis only, not an available allocation.
- Self-reported — Headline returns are manager- or firm-reported and unaudited.
- Partial 13F — The disclosed book is longs-only and ~45 days lagged — a slice, not the strategy.
Top holdings
Largest reported 13F position Q1 2026 — the AI-trade anchor of the long book.
Mag-7.
Mag-7; AWS AI/compute exposure.
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Our take
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