State Street
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State Street’s Quantum-Si Incorporated QSI Stock Holding History

State Street’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 		$788K Sell
890,741
-2,879,948
-76% -$2.74M ﹤0.01% 3501
2026
Q1 		$2.92M Buy
3,770,689
+207,968
+6% +$215K ﹤0.01% 3181
2025
Q4 		$3.92M Buy
3,562,721
+745,231
+26% +$1.21M ﹤0.01% 3100
2025
Q3 		$3.97M Buy
2,817,490
+61,053
+2% +$88.3K ﹤0.01% 3078
2025
Q2 		$5.4M Buy
2,756,437
+302,331
+12% +$447K ﹤0.01% 2907
2025
Q1 		$2.94M Buy
2,454,106
+49,087
+2% +$94.1K ﹤0.01% 3089
2024
Q4 		$6.49M Buy
2,405,019
+135,981
+6% +$159K ﹤0.01% 2842
2024
Q3 		$2M Sell
2,269,038
-102,313
-4% -$99.3K ﹤0.01% 3329
2024
Q2 		$2.49M Buy
2,371,351
+211,542
+10% +$339K ﹤0.01% 3231
2024
Q1 		$4.25M Sell
2,159,809
-50,028
-2% -$87.4K ﹤0.01% 2995
2023
Q4 		$4.44M Buy
2,209,837
+16,419
+0.7% +$25K ﹤0.01% 3001
2023
Q3 		$3.64M Buy
2,193,418
+110,125
+5% +$265K ﹤0.01% 3081
2023
Q2 		$3.73M Buy
2,083,293
+422,554
+25% +$662K ﹤0.01% 3144
2023
Q1 		$2.92M Sell
1,660,739
-106,990
-6% -$211K ﹤0.01% 3194
2022
Q4 		$3.23M Buy
1,767,729
+44,392
+3% +$114K ﹤0.01% 3228
2022
Q3 		$4.74M Buy
1,723,337
+237,051
+16% +$758K ﹤0.01% 3087
2022
Q2 		$3.45M Buy
1,486,286
+1,084,571
+270% +$4.15M ﹤0.01% 3279
2022
Q1 		$1.88M Buy
401,715
+10,901
+3% +$53.1K ﹤0.01% 3591
2021
Q4 		$3.08M Buy
390,814
+137,914
+55% +$1.04M ﹤0.01% 3479
2021
Q3 		$2.11M Buy
+252,900
New +$2.49M ﹤0.01% 3598

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

State Street's QSI Position: Q2 2026 in Review

State Street reduced its Quantum-Si Incorporated (QSI) stake by 76% in Q2 2026, selling an estimated $2.74M and leaving 890,741 shares worth $788K. The position accounts for ﹤0.01% of the portfolio, ranked #3501.

State Street first reported a position in QSI in Q3 2021 and has held it in 20 quarters since. The position peaked at $6.49M in Q4 2024. 141 funds tracked by Wall St. Rank hold QSI as of Q2 2026.

  • State Street held 890,741 shares of Quantum-Si Incorporated worth $788K as of Q2 2026.
  • State Street sold 2,879,948 Quantum-Si Incorporated shares in Q2 2026, an estimated $2.74M.
  • Quantum-Si Incorporated made up ﹤0.01% of State Street's portfolio in Q2 2026, its #3501 holding.
  • State Street first reported a position in Quantum-Si Incorporated in Q3 2021 and has held it in 20 quarters since.
  • State Street's Quantum-Si Incorporated position peaked at $6.49M in Q4 2024.
  • 141 funds tracked by Wall St. Rank held Quantum-Si Incorporated as of Q2 2026.

Based on State Street's 13F filing for Q2 2026, filed 7 Aug 2026.