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

Barclays’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 		$182K Buy
205,690
+166,553
+426% +$159K ﹤0.01% 3774
2026
Q1 		$30.3K Sell
39,137
-230,278
-85% -$239K ﹤0.01% 4476
2025
Q4 		$296K Buy
269,415
+48,205
+22% +$78.5K ﹤0.01% 4133
2025
Q3 		$312K Sell
221,210
-17,791
-7% -$25.7K ﹤0.01% 4071
2025
Q2 		$468K Buy
239,001
+118,113
+98% +$175K ﹤0.01% 3789
2025
Q1 		$145K Sell
120,888
-29,728
-20% -$57K ﹤0.01% 4237
2024
Q4 		$407K Sell
150,616
-46,210
-23% -$54.2K ﹤0.01% 3953
2024
Q3 		$174K Buy
196,826
+133,438
+211% +$130K ﹤0.01% 4364
2024
Q2 		$66.6K Sell
63,388
-37,967
-37% -$60.9K ﹤0.01% 4094
2024
Q1 		$200K Sell
101,355
-68,253
-40% -$119K ﹤0.01% 4118
2023
Q4 		$341K Buy
169,608
+121,670
+254% +$185K ﹤0.01% 4123
2023
Q3 		$79.6K Sell
47,938
-1,839
-4% -$4.43K ﹤0.01% 3679
2023
Q2 		$89.1K Sell
49,777
-26,358
-35% -$41.3K ﹤0.01% 3600
2023
Q1 		$134K Buy
76,135
+21,850
+40% +$43.1K ﹤0.01% 4024
2022
Q4 		$99.3K Buy
54,285
+18,954
+54% +$48.8K ﹤0.01% 4225
2022
Q3 		$98K Sell
35,331
-711
-2% -$2.27K ﹤0.01% 3551
2022
Q2 		$84K Buy
36,042
+4,204
+13% +$16.1K ﹤0.01% 3838
2022
Q1 		$149K Buy
+31,838
New +$155K ﹤0.01% 3596

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

Barclays's QSI Position: Q2 2026 in Review

Barclays increased its Quantum-Si Incorporated (QSI) stake by 426% in Q2 2026, buying an estimated $159K and bringing the position to 205,690 shares worth $182K. The position accounts for ﹤0.01% of the portfolio, ranked #3774.

Barclays first reported a position in QSI in Q1 2022 and has held it in 18 quarters since. The position peaked at $468K in Q2 2025. 141 funds tracked by Wall St. Rank hold QSI as of Q2 2026.

  • Barclays held 205,690 shares of Quantum-Si Incorporated worth $182K as of Q2 2026.
  • Barclays bought 166,553 Quantum-Si Incorporated shares in Q2 2026, an estimated $159K.
  • Quantum-Si Incorporated made up ﹤0.01% of Barclays's portfolio in Q2 2026, its #3774 holding.
  • Barclays first reported a position in Quantum-Si Incorporated in Q1 2022 and has held it in 18 quarters since.
  • Barclays's Quantum-Si Incorporated position peaked at $468K in Q2 2025.
  • 141 funds tracked by Wall St. Rank held Quantum-Si Incorporated as of Q2 2026.

Based on Barclays's 13F filing for Q2 2026, filed 14 Aug 2026.