Shay Capital’s Quantum-Si Incorporated QSI Stock Holding History

Shay Capital’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	$117K	Buy	150,922 +1,790	+1%	+$1.85K	0.02%	430
2025 Q4	$164K	Sell	149,132 -5,440	-4%	-$8.86K	0.03%	422
2025 Q3	$218K	Buy	154,572 +24,941	+19%	+$36.1K	0.04%	346
2025 Q2	$254K	Buy	129,631 +1,131	+0.9%	+$1.67K	0.06%	236
2025 Q1	$154K	Sell	128,500 -88,046	-41%	-$169K	0.04%	254
2024 Q4	$585K	Buy	216,546 +78,376	+57%	+$91.9K	0.14%	163
2024 Q3	$122K	Sell	138,170 -90	-0.1%	-$87	0.04%	271
2024 Q2	$145K	Buy	138,260 +112,598	+439%	+$181K	0.04%	228
2024 Q1	$50.6K	Sell	25,662 -3,676	-13%	-$6.42K	0.01%	352
2023 Q4	$59K	Buy	29,338 +9,801	+50%	+$14.9K	0.02%	248
2023 Q3	$32.4K	Sell	19,537 -64,161	-77%	-$155K	0.01%	322
2023 Q2	$150K	Buy	+83,698	New	+$131K	0.05%	306
2022 Q3	–	Sell	-65,879	Closed	-$153K	–	511
2022 Q2	$153K	Buy	+65,879	New	+$252K	0.08%	323

Other funds holding QSI

BlackRock New York $5.7T AUM 30.48% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

ARK Investment Management St. Petersburg, Florida $12.9B AUM 64.92% 1-Year Est. Return

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 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 Zurich, Switzerland $564B AUM 30.12% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM