Optiver Holding
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Optiver Holding’s Quantum-Si Incorporated QSI Stock Holding History

Optiver Holding’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 		$27 Sell
30
-776
-96% -$739 ﹤0.01% 2698
2026
Q1 		$624 Sell
806
-121
-13% -$125 ﹤0.01% 2136
2025
Q4 		$1.02K Sell
927
-191
-17% -$311 ﹤0.01% 2214
2025
Q3 		$1.58K Buy
+1,118
New +$1.62K ﹤0.01% 2440

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

Optiver Holding's QSI Position: Q2 2026 in Review

Optiver Holding reduced its Quantum-Si Incorporated (QSI) stake by 96% in Q2 2026, selling an estimated $739 and leaving 30 shares worth $27. The position accounts for ﹤0.01% of the portfolio, ranked #2698.

Optiver Holding first reported a position in QSI in Q3 2025 and has held it in 4 quarters since. The position peaked at $1.58K in Q3 2025. 141 funds tracked by Wall St. Rank hold QSI as of Q2 2026.

  • Optiver Holding held 30 shares of Quantum-Si Incorporated worth $27 as of Q2 2026.
  • Optiver Holding sold 776 Quantum-Si Incorporated shares in Q2 2026, an estimated $739.
  • Quantum-Si Incorporated made up ﹤0.01% of Optiver Holding's portfolio in Q2 2026, its #2698 holding.
  • Optiver Holding first reported a position in Quantum-Si Incorporated in Q3 2025 and has held it in 4 quarters since.
  • Optiver Holding's Quantum-Si Incorporated position peaked at $1.58K in Q3 2025.
  • 141 funds tracked by Wall St. Rank held Quantum-Si Incorporated as of Q2 2026.

Based on Optiver Holding's 13F filing for Q2 2026, filed 12 Aug 2026.