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Tower Research Capital (TRC)’s Quantum-Si Incorporated QSI Stock Holding History

Tower Research Capital (TRC)’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 		$21K Sell
23,758
-1,185
-5% -$1.13K ﹤0.01% 3510
2026
Q1 		$19.3K Sell
24,943
-7,652
-23% -$7.93K ﹤0.01% 3502
2025
Q4 		$35.9K Buy
32,595
+17,934
+122% +$29.2K ﹤0.01% 2674
2025
Q3 		$20.7K Sell
14,661
-246
-2% -$356 ﹤0.01% 3283
2025
Q2 		$29.2K Sell
14,907
-6,119
-29% -$9.05K ﹤0.01% 3417
2025
Q1 		$25.2K Sell
21,026
-2,321
-10% -$4.45K ﹤0.01% 2762
2024
Q4 		$63K Buy
23,347
+13,592
+139% +$15.9K ﹤0.01% 2412
2024
Q3 		$8.6K Sell
9,755
-10,595
-52% -$10.3K ﹤0.01% 3950
2024
Q2 		$21.4K Buy
20,350
+20,334
+127,088% +$32.6K ﹤0.01% 3725
2024
Q1 		$32 Sell
16
-87,425
-100% -$153K ﹤0.01% 5732
2023
Q4 		$176K Buy
87,441
+61,574
+238% +$93.8K ﹤0.01% 2205
2023
Q3 		$42.9K Buy
25,867
+11,457
+80% +$27.6K ﹤0.01% 2681
2023
Q2 		$25.8K Sell
14,410
-18,623
-56% -$29.2K ﹤0.01% 3164
2023
Q1 		$58K Buy
33,033
+15,646
+90% +$30.9K ﹤0.01% 2366
2022
Q4 		$32K Buy
17,387
+6,075
+54% +$15.7K ﹤0.01% 2694
2022
Q3 		$32K Sell
11,312
-3,284
-22% -$10.5K ﹤0.01% 3553
2022
Q2 		$34K Sell
14,596
-15,229
-51% -$58.3K ﹤0.01% 3254
2022
Q1 		$140K Buy
29,825
+28,167
+1,699% +$137K ﹤0.01% 1982
2021
Q4 		$13K Buy
1,658
+1,630
+5,821% +$12.3K ﹤0.01% 4197
2021
Q3 		$0 Sell
28
-592
-95% -$5.83K ﹤0.01% 6091
2021
Q2 		$8K Buy
+620
New +$6.5K ﹤0.01% 4501

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

Tower Research Capital (TRC)'s QSI Position: Q2 2026 in Review

Tower Research Capital (TRC) reduced its Quantum-Si Incorporated (QSI) stake by 4.8% in Q2 2026, selling an estimated $1.13K and leaving 23,758 shares worth $21K. The position accounts for ﹤0.01% of the portfolio, ranked #3510.

Tower Research Capital (TRC) first reported a position in QSI in Q2 2021 and has held it in 21 quarters since. The position peaked at $176K in Q4 2023. 141 funds tracked by Wall St. Rank hold QSI as of Q2 2026.

  • Tower Research Capital (TRC) held 23,758 shares of Quantum-Si Incorporated worth $21K as of Q2 2026.
  • Tower Research Capital (TRC) sold 1,185 Quantum-Si Incorporated shares in Q2 2026, an estimated $1.13K.
  • Quantum-Si Incorporated made up ﹤0.01% of Tower Research Capital (TRC)'s portfolio in Q2 2026, its #3510 holding.
  • Tower Research Capital (TRC) first reported a position in Quantum-Si Incorporated in Q2 2021 and has held it in 21 quarters since.
  • Tower Research Capital (TRC)'s Quantum-Si Incorporated position peaked at $176K in Q4 2023.
  • 141 funds tracked by Wall St. Rank held Quantum-Si Incorporated as of Q2 2026.

Based on Tower Research Capital (TRC)'s 13F filing for Q2 2026, filed 11 Aug 2026.