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

Citigroup’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 		$4.12K Sell
4,659
-8,655
-65% -$8.24K ﹤0.01% 5330
2026
Q1 		$10.3K Sell
13,314
-6,462
-33% -$6.7K ﹤0.01% 5026
2025
Q4 		$21.8K Sell
19,776
-3,897
-16% -$6.34K ﹤0.01% 4840
2025
Q3 		$33.4K Sell
23,673
-25,434
-52% -$36.8K ﹤0.01% 4623
2025
Q2 		$96.2K Sell
49,107
-35,352
-42% -$52.3K ﹤0.01% 4420
2025
Q1 		$101K Sell
84,459
-5,789
-6% -$11.1K ﹤0.01% 4593
2024
Q4 		$244K Buy
90,248
+5,646
+7% +$6.62K ﹤0.01% 4304
2024
Q3 		$74.6K Buy
84,602
+61,210
+262% +$59.4K ﹤0.01% 4890
2024
Q2 		$24.6K Buy
23,392
+4,061
+21% +$6.51K ﹤0.01% 4936
2024
Q1 		$38.1K Buy
19,331
+4,155
+27% +$7.26K ﹤0.01% 4751
2023
Q4 		$30.5K Buy
15,176
+13,548
+832% +$20.6K ﹤0.01% 4796
2023
Q3 		$2.7K Sell
1,628
-31,535
-95% -$75.9K ﹤0.01% 4884
2023
Q2 		$59.4K Buy
33,163
+31,799
+2,331% +$49.8K ﹤0.01% 4539
2023
Q1 		$2.4K Sell
1,364
-2,763
-67% -$5.45K ﹤0.01% 5070
2022
Q4 		$7.55K Sell
4,127
-634
-13% -$1.63K ﹤0.01% 4932
2022
Q3 		$13K Sell
4,761
-4,740
-50% -$15.2K ﹤0.01% 4906
2022
Q2 		$22K Sell
9,501
-15,437
-62% -$59.1K ﹤0.01% 4946
2022
Q1 		$117K Buy
24,938
+19,830
+388% +$96.6K ﹤0.01% 4339
2021
Q4 		$40K Sell
5,108
-3,025
-37% -$22.8K ﹤0.01% 5178
2021
Q3 		$68K Buy
+8,133
New +$80.1K ﹤0.01% 4583

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

Citigroup's QSI Position: Q2 2026 in Review

Citigroup reduced its Quantum-Si Incorporated (QSI) stake by 65% in Q2 2026, selling an estimated $8.24K and leaving 4,659 shares worth $4.12K. The position accounts for ﹤0.01% of the portfolio, ranked #5330.

Citigroup first reported a position in QSI in Q3 2021 and has held it in 20 quarters since. The position peaked at $244K in Q4 2024. 141 funds tracked by Wall St. Rank hold QSI as of Q2 2026.

  • Citigroup held 4,659 shares of Quantum-Si Incorporated worth $4.12K as of Q2 2026.
  • Citigroup sold 8,655 Quantum-Si Incorporated shares in Q2 2026, an estimated $8.24K.
  • Quantum-Si Incorporated made up ﹤0.01% of Citigroup's portfolio in Q2 2026, its #5330 holding.
  • Citigroup first reported a position in Quantum-Si Incorporated in Q3 2021 and has held it in 20 quarters since.
  • Citigroup's Quantum-Si Incorporated position peaked at $244K in Q4 2024.
  • 141 funds tracked by Wall St. Rank held Quantum-Si Incorporated as of Q2 2026.

Based on Citigroup's 13F filing for Q2 2026, filed 3 Aug 2026.