Fidelity Investments
QSI icon

Fidelity Investments’s Quantum-Si Incorporated QSI Stock Holding History

Fidelity Investments’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 		$110K Buy
123,767
+91,799
+287% +$87.4K ﹤0.01% 3926
2026
Q1 		$24.7K Sell
31,968
-65,957
-67% -$68.3K ﹤0.01% 4431
2025
Q4 		$108K Buy
97,925
+7,405
+8% +$12.1K ﹤0.01% 3723
2025
Q3 		$128K Buy
90,520
+72,000
+389% +$104K ﹤0.01% 3564
2025
Q2 		$36.3K Sell
18,520
-61,103
-77% -$90.4K ﹤0.01% 4044
2025
Q1 		$95.5K Sell
79,623
-698
-0.9% -$1.34K ﹤0.01% 3572
2024
Q4 		$217K Buy
80,321
+59,210
+280% +$69.4K ﹤0.01% 3236
2024
Q3 		$18.6K Buy
21,111
+20,172
+2,148% +$19.6K ﹤0.01% 4208
2024
Q2 		$986 Sell
939
-3,356
-78% -$5.38K ﹤0.01% 4800
2024
Q1 		$8.46K Sell
4,295
-993
-19% -$1.74K ﹤0.01% 4337
2023
Q4 		$10.6K Sell
5,288
-1,459
-22% -$2.22K ﹤0.01% 4221
2023
Q3 		$11.2K Buy
6,747
+3,213
+91% +$7.74K ﹤0.01% 4073
2023
Q2 		$6.33K Buy
3,534
+2,526
+251% +$3.96K ﹤0.01% 4292
2023
Q1 		$1.77K Sell
1,008
-126
-11% -$249 ﹤0.01% 4653
2022
Q4 		$2.08K Sell
1,134
-3,520
-76% -$9.07K ﹤0.01% 4501
2022
Q3 		$13K Buy
4,654
+4,392
+1,676% +$14K ﹤0.01% 3997
2022
Q2 		$0 Buy
+262
New +$1K ﹤0.01% 5387
2022
Q1 		– Sell
-16
Closed – – 5386
2021
Q4 		$0 Buy
+16
New +$120 ﹤0.01% 4826

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

Fidelity Investments's QSI Position: Q2 2026 in Review

Fidelity Investments increased its Quantum-Si Incorporated (QSI) stake by 287% in Q2 2026, buying an estimated $87.4K and bringing the position to 123,767 shares worth $110K. The position accounts for ﹤0.01% of the portfolio, ranked #3926.

Fidelity Investments first reported a position in QSI in Q4 2021 and has held it in 18 quarters since. The position peaked at $217K in Q4 2024. 141 funds tracked by Wall St. Rank hold QSI as of Q2 2026.

  • Fidelity Investments held 123,767 shares of Quantum-Si Incorporated worth $110K as of Q2 2026.
  • Fidelity Investments bought 91,799 Quantum-Si Incorporated shares in Q2 2026, an estimated $87.4K.
  • Quantum-Si Incorporated made up ﹤0.01% of Fidelity Investments's portfolio in Q2 2026, its #3926 holding.
  • Fidelity Investments first reported a position in Quantum-Si Incorporated in Q4 2021 and has held it in 18 quarters since.
  • Fidelity Investments's Quantum-Si Incorporated position peaked at $217K in Q4 2024.
  • 141 funds tracked by Wall St. Rank held Quantum-Si Incorporated as of Q2 2026.

Based on Fidelity Investments's 13F filing for Q2 2026, filed 13 Aug 2026.