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

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$220K	Buy	283,981 +38,180	+16%	+$39.6K	0.01%	4039
2025 Q4	$270K	Sell	245,801 -131,973	-35%	-$215K	0.01%	4100
2025 Q3	$533K	Buy	377,774 +243,142	+181%	+$351K	0.02%	3641
2025 Q2	$264K	Buy	+134,632	New	+$199K	0.01%	4067
2025 Q1	–	Hold	0	–	–	–	9117
2024 Q4	–	Hold	0	–	–	–	8664
2024 Q3	–	Hold	0	–	–	–	8039
2024 Q2	–	Hold	0	–	–	–	8178
2024 Q1	–	Hold	0	–	–	–	8581
2023 Q4	–	Hold	0	–	–	–	8892
2023 Q3	–	Sell	-3,154	Closed	-$7.6K	–	9072
2023 Q2	$5.65K	Buy	3,154 +1,600	+103%	+$2.51K	﹤0.01%	6674
2023 Q1	$2.73K	Buy	+1,554	New	+$3.06K	﹤0.01%	6527
2022 Q4	–	Hold	0	–	–	–	8669
2022 Q3	–	Hold	0	–	–	–	8841
2022 Q2	–	Hold	0	–	–	–	9117
2022 Q1	–	Hold	0	–	–	–	9230
2021 Q4	–	Hold	0	–	–	–	9361
2021 Q3	–	Sell	-27,500	Closed	-$271K	–	9337
2021 Q2	$337K	Buy	27,500 +27,200	+9,067%	+$285K	0.01%	4660
2021 Q1	$4K	Buy	+300	New	+$3.63K	﹤0.01%	7293