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.