Quant Hedge Fund · CIK 0001179392
Two Sigma Investments
Two Sigma Investments, a quant hedge fund overseeing $70.90B in disclosed equity holdings (SEC CIK 0001179392). The latest 13F filing (2025Q4) discloses 3467 positions across 11 sectors, with the largest positions in XLY, XLK and VUG. On a mark-to-market basis the tracked portfolio has returned 25.4% over the past year. OpenStocks tracks 40 consecutive 13F filings for this manager — every position change, new entry, and exit is logged below.
Portfolio
$70.90B
Positions
3467
Quarter
2025Q4
Filings tracked
40
Biggest winner since filing
PLTRPALANTIR TECHNOLOGIES INC
+70.4%
+$728.3M
Biggest loser since filing
ZSZSCALER INC
-50.7%
−$155.3M
Investment strategy
Two Sigma Investments is a large fund with a diversified portfolio. Top 10 positions are only 8% of the equity book.
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11 sectors2887 positions
Top 3 = 3% of book · QQQ, SPY, NVDA
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Performance
vs SPY40 quarters tracked
Mark-to-market portfolio growth vs SPY benchmark, with AUM and concentration history.
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Options & derivatives
Bullish bets80 option positions
Largest: CALL QQQ ($249.9M notional)
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Activity & trades
Quarter-by-quarterLast move 2025Q4
SOLD RR — and 4 more recent moves.
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