Charles Schwab
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Charles Schwab’s Quantum-Si Incorporated QSI Stock Holding History

Charles Schwab’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 		$74.9K Sell
84,612
-372,959
-82% -$355K ﹤0.01% 3416
2026
Q1 		$354K Sell
457,571
-10,603
-2% -$11K ﹤0.01% 3204
2025
Q4 		$515K Buy
468,174
+86
+0% +$140 ﹤0.01% 3157
2025
Q3 		$660K Buy
468,088
+36,641
+8% +$53K ﹤0.01% 3080
2025
Q2 		$846K Buy
431,447
+64,003
+17% +$94.7K ﹤0.01% 2950
2025
Q1 		$441K Buy
367,444
+59,423
+19% +$114K ﹤0.01% 3120
2024
Q4 		$832K Buy
308,021
+75,661
+33% +$88.7K ﹤0.01% 2973
2024
Q3 		$205K Sell
232,360
-28,082
-11% -$27.3K ﹤0.01% 3334
2024
Q2 		$273K Sell
260,442
-1,033
-0.4% -$1.66K ﹤0.01% 3391
2024
Q1 		$515K Buy
261,475
+880
+0.3% +$1.54K ﹤0.01% 3020
2023
Q4 		$524K Sell
260,595
-16,360
-6% -$24.9K ﹤0.01% 3062
2023
Q3 		$460K Buy
276,955
+15,378
+6% +$37K ﹤0.01% 3072
2023
Q2 		$468K Buy
261,577
+23,349
+10% +$36.6K ﹤0.01% 3087
2023
Q1 		$419K Hold
238,228
– – ﹤0.01% 3006
2022
Q4 		$436K Buy
238,228
+5,242
+2% +$13.5K ﹤0.01% 3034
2022
Q3 		$641K Buy
232,986
+277
+0.1% +$885 ﹤0.01% 2931
2022
Q2 		$540K Buy
232,709
+200,691
+627% +$769K ﹤0.01% 3045
2022
Q1 		$150K Hold
32,018
– – ﹤0.01% 3358
2021
Q4 		$252K Hold
32,018
– – ﹤0.01% 3318
2021
Q3 		$268K Buy
+32,018
New +$315K ﹤0.01% 3288

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

Charles Schwab's QSI Position: Q2 2026 in Review

Charles Schwab reduced its Quantum-Si Incorporated (QSI) stake by 82% in Q2 2026, selling an estimated $355K and leaving 84,612 shares worth $74.9K. The position accounts for ﹤0.01% of the portfolio, ranked #3416.

Charles Schwab first reported a position in QSI in Q3 2021 and has held it in 20 quarters since. The position peaked at $846K in Q2 2025. 140 funds tracked by Wall St. Rank hold QSI as of Q2 2026.

  • Charles Schwab held 84,612 shares of Quantum-Si Incorporated worth $74.9K as of Q2 2026.
  • Charles Schwab sold 372,959 Quantum-Si Incorporated shares in Q2 2026, an estimated $355K.
  • Quantum-Si Incorporated made up ﹤0.01% of Charles Schwab's portfolio in Q2 2026, its #3416 holding.
  • Charles Schwab first reported a position in Quantum-Si Incorporated in Q3 2021 and has held it in 20 quarters since.
  • Charles Schwab's Quantum-Si Incorporated position peaked at $846K in Q2 2025.
  • 140 funds tracked by Wall St. Rank held Quantum-Si Incorporated as of Q2 2026.

Based on Charles Schwab's 13F filing for Q2 2026, filed 14 Aug 2026.