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 		$41.1K Buy
53,100
+3,700
+7% +$3.83K ﹤0.01% 5404
2025
Q4 		$54.3K Buy
49,400
+8,100
+20% +$13.2K ﹤0.01% 5538
2025
Q3 		$58.2K Sell
41,300
-77,800
-65% -$112K ﹤0.01% 5825
2025
Q2 		$233K Buy
119,100
+20,800
+21% +$30.8K ﹤0.01% 4176
2025
Q1 		$118K Buy
98,300
+15,100
+18% +$28.9K ﹤0.01% 4466
2024
Q4 		$225K Buy
+83,200
New +$97.5K ﹤0.01% 3846
2024
Q2 		– Sell
-9,100
Closed -$17.9K – 7345
2024
Q1 		$17.9K Buy
9,100
+8,100
+810% +$14.2K ﹤0.01% 5503
2023
Q4 		$2.01K Sell
1,000
-4,000
-80% -$6.1K ﹤0.01% 6823
2023
Q3 		$8.3K Buy
+5,000
New +$12K ﹤0.01% 6456
2023
Q2 		– Sell
-400
Closed -$704 – 8107
2023
Q1 		$704 Sell
400
-2,000
-83% -$3.94K ﹤0.01% 6851
2022
Q4 		$4.39K Sell
2,400
-180,500
-99% -$465K ﹤0.01% 6394
2022
Q3 		$503K Buy
182,900
+180,400
+7,216% +$577K ﹤0.01% 3228
2022
Q2 		$6K Sell
2,500
-2,600
-51% -$9.96K ﹤0.01% 7019
2022
Q1 		$24K Sell
5,100
-11,900
-70% -$58K ﹤0.01% 6645
2021
Q4 		$134K Sell
17,000
-2,200
-11% -$16.6K ﹤0.01% 5468
2021
Q3 		$160K Buy
19,200
+3,500
+22% +$34.5K ﹤0.01% 5409
2021
Q2 		$192K Buy
15,700
+4,600
+41% +$48.2K ﹤0.01% 5290
2021
Q1 		$132K Buy
+11,100
New +$134K ﹤0.01% 5402

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.