Group One Trading
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Group One Trading’s Quantum-Si Incorporated QSI Stock Holding History

Group One Trading’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
Q1 		$189K Sell
243,700
-191,300
-44% -$198K ﹤0.01% 4153
2025
Q4 		$479K Buy
435,000
+227,000
+109% +$369K ﹤0.01% 3559
2025
Q3 		$293K Sell
208,000
-122,200
-37% -$177K ﹤0.01% 4248
2025
Q2 		$647K Buy
330,200
+67,900
+26% +$100K ﹤0.01% 3171
2025
Q1 		$315K Sell
262,300
-373,400
-59% -$715K ﹤0.01% 3530
2024
Q4 		$1.72M Buy
635,700
+484,400
+320% +$568K ﹤0.01% 2058
2024
Q3 		$133K Sell
151,300
-120,300
-44% -$117K ﹤0.01% 3951
2024
Q2 		$285K Buy
271,600
+1,800
+0.7% +$2.89K ﹤0.01% 3088
2024
Q1 		$532K Buy
269,800
+262,800
+3,754% +$459K ﹤0.01% 2664
2023
Q4 		$14.1K Sell
7,000
-563,100
-99% -$858K ﹤0.01% 5983
2023
Q3 		$946K Buy
570,100
+550,100
+2,751% +$1.32M ﹤0.01% 2320
2023
Q2 		$35.8K Sell
20,000
-13,100
-40% -$20.5K ﹤0.01% 5533
2023
Q1 		$58.3K Sell
33,100
-136,100
-80% -$268K ﹤0.01% 4742
2022
Q4 		$310K Sell
169,200
-84,500
-33% -$218K ﹤0.01% 3470
2022
Q3 		$698K Sell
253,700
-59,000
-19% -$189K ﹤0.01% 2905
2022
Q2 		$725K Sell
312,700
-26,400
-8% -$101K ﹤0.01% 3069
2022
Q1 		$1.59M Sell
339,100
-170,200
-33% -$830K ﹤0.01% 2629
2021
Q4 		$4.01M Buy
509,300
+340,600
+202% +$2.56M ﹤0.01% 1904
2021
Q3 		$1.41M Sell
168,700
-146,200
-46% -$1.44M ﹤0.01% 3030
2021
Q2 		$3.86M Buy
314,900
+277,500
+742% +$2.91M ﹤0.01% 1944
2021
Q1 		$446K Buy
+37,400
New +$452K ﹤0.01% 4182

Other funds holding QSI

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
AIM
ARK Investment Management St. Petersburg, Florida $12.9B AUM 64.92% 1-Year Est. Return
NAMA
Nikko Asset Management Americas New York $7.07B AUM 50.91% 1-Year Est. Return
Sumitomo Mitsui Trust Group
Sumitomo Mitsui Trust Group Minato-Ku, Tokyo, Japan $154B AUM 29.96% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
AQR Capital Management
AQR Capital Management Greenwich, Connecticut $218B AUM 29.41% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $666B AUM 30.12% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

Group One Trading's QSI Position: Q1 2026 in Review

Group One Trading increased its Quantum-Si Incorporated (QSI) stake by 16% in Q1 2026, buying an estimated $39.6K and bringing the position to 283,981 shares worth $220K. The position accounts for ﹤0.01% of the portfolio, ranked #4039.

Group One Trading first reported a position in QSI in Q1 2021 and has held it in 8 quarters since. The position peaked at $533K in Q3 2025. 156 funds tracked by Wall St. Rank hold QSI as of Q1 2026.

  • Group One Trading held 283,981 shares of Quantum-Si Incorporated worth $220K as of Q1 2026.
  • Group One Trading bought 38,180 Quantum-Si Incorporated shares in Q1 2026, an estimated $39.6K.
  • Quantum-Si Incorporated made up ﹤0.01% of Group One Trading's portfolio in Q1 2026, its #4039 holding.
  • Group One Trading first reported a position in Quantum-Si Incorporated in Q1 2021 and has held it in 8 quarters since.
  • Group One Trading's Quantum-Si Incorporated position peaked at $533K in Q3 2025.
  • 156 funds tracked by Wall St. Rank held Quantum-Si Incorporated as of Q1 2026.

Based on Group One Trading's 13F filing for Q1 2026, filed 13 May 2026.