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Winton Group’s Quantum-Si Incorporated QSI Stock Holding History

Winton Group’s Portfolio QSI Stock Details QSI Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$67.1K Buy
+75,800
New +$72.2K ﹤0.01% 1110
2025
Q1 		– Sell
-34,610
Closed -$93.4K – 774
2024
Q4 		$93.4K Buy
+34,610
New +$40.6K 0.01% 584
2023
Q4 		– Sell
-62,058
Closed -$103K – 841
2023
Q3 		$103K Buy
+62,058
New +$149K 0.01% 716

Other funds holding QSI

Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
AIM
ARK Investment Management St. Petersburg, Florida $15.4B AUM 50.29% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
NAMA
Nikko Asset Management Americas New York $7.75B AUM 33.73% 1-Year Est. Return
Sumitomo Mitsui Trust Group
Sumitomo Mitsui Trust Group Minato-Ku, Tokyo, Japan $175B AUM 40.63% 1-Year Est. Return
Millennium Management
Millennium Management New York $276B AUM 44.8% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return
AQR Capital Management
AQR Capital Management Greenwich, Connecticut $287B AUM 42.33% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Jane Street
Jane Street New York $1.21T AUM 78.12% 1-Year Est. Return

Winton Group's QSI Position: Q2 2026 in Review

Winton Group opened a new position in Quantum-Si Incorporated (QSI) in Q2 2026: 75,800 shares worth $67.1K. The stake represents ﹤0.01% of the portfolio and ranks #1110 among its holdings. This is a return to the name: Winton Group previously reported a position in QSI as recently as Q4 2024.

Winton Group first reported a position in QSI in Q3 2023 and has held it in 3 quarters since. The position peaked at $103K in Q3 2023. 141 funds tracked by Wall St. Rank hold QSI as of Q2 2026.

  • Winton Group held 75,800 shares of Quantum-Si Incorporated worth $67.1K as of Q2 2026.
  • Quantum-Si Incorporated was a new Winton Group position in Q2 2026.
  • Quantum-Si Incorporated made up ﹤0.01% of Winton Group's portfolio in Q2 2026, its #1110 holding.
  • Winton Group first reported a position in Quantum-Si Incorporated in Q3 2023 and has held it in 3 quarters since.
  • Winton Group's Quantum-Si Incorporated position peaked at $103K in Q3 2023.
  • 141 funds tracked by Wall St. Rank held Quantum-Si Incorporated as of Q2 2026.

Based on Winton Group's 13F filing for Q2 2026, filed 7 Aug 2026.