Belvedere Trading
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Belvedere Trading’s Quantum-Si Incorporated QSI Stock Holding History

Belvedere Trading’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
Q1 		– Sell
-14,400
Closed -$15.8K – 948
2025
Q4 		$15.8K Sell
14,400
-700
-5% -$1.14K ﹤0.01% 745
2025
Q3 		$21.3K Sell
15,100
-600
-4% -$867 ﹤0.01% 760
2025
Q2 		$30.8K Buy
+15,700
New +$23.2K ﹤0.01% 639
2025
Q1 		– Sell
-50,400
Closed -$136K – 916
2024
Q4 		$136K Buy
+50,400
New +$59.1K ﹤0.01% 475
2021
Q3 		– Sell
-28,600
Closed -$351K – 573
2021
Q2 		$351K Buy
28,600
+10,400
+57% +$109K 0.03% 135
2021
Q1 		$217K Buy
+18,200
New +$220K 0.02% 174

Other funds holding QSI

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
AIM
ARK Investment Management St. Petersburg, Florida $12.9B AUM 64.92% 1-Year Est. Return
NAMA
Nikko Asset Management Americas New York $7.07B AUM 50.91% 1-Year Est. Return
Sumitomo Mitsui Trust Group
Sumitomo Mitsui Trust Group Minato-Ku, Tokyo, Japan $154B AUM 29.96% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
AQR Capital Management
AQR Capital Management Greenwich, Connecticut $218B AUM 29.41% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $666B AUM 30.12% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

Belvedere Trading's QSI Position: Q4 2025 in Review

Belvedere Trading sold out of Quantum-Si Incorporated (QSI) in Q4 2025, closing a stake of 1,390 shares — an estimated $2.26K sold.

Belvedere Trading first reported a position in QSI in Q1 2021 and held it in 5 quarters. The position peaked at $111K in Q4 2024. 135 funds tracked by Wall St. Rank hold QSI as of Q4 2025.

  • Belvedere Trading reported no remaining Quantum-Si Incorporated position as of Q4 2025 after selling out during the quarter.
  • Belvedere Trading sold 1,390 Quantum-Si Incorporated shares in Q4 2025, an estimated $2.26K.
  • Belvedere Trading first reported a position in Quantum-Si Incorporated in Q1 2021 and held it in 5 quarters.
  • Belvedere Trading's Quantum-Si Incorporated position peaked at $111K in Q4 2024.
  • 135 funds tracked by Wall St. Rank held Quantum-Si Incorporated as of Q4 2025.

Based on Belvedere Trading's 13F filing for Q4 2025, filed 10 Feb 2026.