T. Rowe Price Associates
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T. Rowe Price Associates’s Quantum-Si Incorporated QSI Stock Holding History

T. Rowe Price Associates’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 		– Sell
-96,486
Closed -$75K – 3316
2026
Q1 		$75K Hold
96,486
– – ﹤0.01% 3040
2025
Q4 		$107K Buy
96,486
+4,452
+5% +$7.25K ﹤0.01% 2936
2025
Q3 		$130K Sell
92,034
-28,472
-24% -$41.2K ﹤0.01% 2880
2025
Q2 		$237K Buy
120,506
+12,332
+11% +$18.2K ﹤0.01% 2636
2025
Q1 		$130K Sell
108,174
-940
-0.9% -$1.8K ﹤0.01% 2767
2024
Q4 		$295K Buy
109,114
+11,787
+12% +$13.8K ﹤0.01% 2517
2024
Q3 		$86K Buy
97,327
+37,600
+63% +$36.5K ﹤0.01% 2849
2024
Q2 		$63K Hold
59,727
– – ﹤0.01% 2826
2024
Q1 		$118K Buy
59,727
+5,945
+11% +$10.4K ﹤0.01% 2751
2023
Q4 		$109K Buy
53,782
+1,737
+3% +$2.65K ﹤0.01% 2702
2023
Q3 		$87K Buy
52,045
+4,664
+10% +$11.2K ﹤0.01% 2692
2023
Q2 		$85K Buy
47,381
+1,030
+2% +$1.61K ﹤0.01% 2723
2023
Q1 		$82K Hold
46,351
– – ﹤0.01% 2720
2022
Q4 		$85K Buy
46,351
+2,038
+5% +$5.25K ﹤0.01% 2745
2022
Q3 		$122K Buy
44,313
+5,599
+14% +$17.9K ﹤0.01% 2684
2022
Q2 		$90K Sell
38,714
-1,171,022
-97% -$4.48M ﹤0.01% 2776
2022
Q1 		$5.66M Sell
1,209,736
-1,149,514
-49% -$5.6M ﹤0.01% 1446
2021
Q4 		$18.6M Buy
2,359,250
+164,650
+8% +$1.24M ﹤0.01% 1303
2021
Q3 		$18.3M Hold
2,194,600
– – ﹤0.01% 1325
2021
Q2 		$25.6M Buy
+2,194,600
New +$23M ﹤0.01% 1235

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

T. Rowe Price Associates's QSI Position: Q2 2026 in Review

T. Rowe Price Associates sold out of Quantum-Si Incorporated (QSI) in Q2 2026, closing a stake of 96,486 shares — an estimated $75K sold.

T. Rowe Price Associates first reported a position in QSI in Q2 2021 and held it in 20 quarters. The position peaked at $25.6M in Q2 2021. 141 funds tracked by Wall St. Rank hold QSI as of Q2 2026.

  • T. Rowe Price Associates reported no remaining Quantum-Si Incorporated position as of Q2 2026 after selling out during the quarter.
  • T. Rowe Price Associates sold 96,486 Quantum-Si Incorporated shares in Q2 2026, an estimated $75K.
  • T. Rowe Price Associates first reported a position in Quantum-Si Incorporated in Q2 2021 and held it in 20 quarters.
  • T. Rowe Price Associates's Quantum-Si Incorporated position peaked at $25.6M in Q2 2021.
  • 141 funds tracked by Wall St. Rank held Quantum-Si Incorporated as of Q2 2026.

Based on T. Rowe Price Associates's 13F filing for Q2 2026, filed 14 Aug 2026.