Two Sigma Securities’s Quantum-Si Incorporated QSI Stock Holding History

Two Sigma Securities’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
2025 Q3	–	Sell	-37,861	Closed	-$74.2K	–	1891
2025 Q2	$74.2K	Sell	37,861 -14,359	-27%	-$21.2K	0.01%	1077
2025 Q1	$62.7K	Buy	+52,220	New	+$100K	0.01%	982
2024 Q2	–	Sell	-26,878	Closed	-$53K	–	3540
2024 Q1	$53K	Buy	+26,878	New	+$47K	﹤0.01%	2561
2022 Q4	–	Sell	-11,983	Closed	-$33K	–	3137
2022 Q3	$33K	Buy	+11,983	New	+$38.3K	﹤0.01%	2238
2022 Q2	–	Sell	-10,826	Closed	-$51K	–	2742
2022 Q1	$51K	Buy	+10,826	New	+$52.8K	﹤0.01%	1872

Other funds holding QSI

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return

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 Minato-Ku, Tokyo, Japan $154B AUM 29.96% 1-Year Est. Return

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

Millennium Management New York $240B AUM 35.51% 1-Year Est. Return

Northern Trust Chicago, Illinois $757B AUM 28.64% 1-Year Est. Return

Susquehanna International Group Bala Cynwyd, Pennsylvania $893B AUM 36.07% 1-Year Est. Return

Two Sigma Securities's QSI Position: Q3 2025 in Review

Two Sigma Securities sold out of Quantum-Si Incorporated (QSI) in Q3 2025, closing a stake of 37,861 shares — an estimated $74.2K sold.

Two Sigma Securities first reported a position in QSI in Q1 2022 and held it in 5 quarters. The position peaked at $74.2K in Q2 2025. 125 funds tracked by Wall St. Rank hold QSI as of Q3 2025.

Two Sigma Securities reported no remaining Quantum-Si Incorporated position as of Q3 2025 after selling out during the quarter.
Two Sigma Securities sold 37,861 Quantum-Si Incorporated shares in Q3 2025, an estimated $74.2K.
Two Sigma Securities first reported a position in Quantum-Si Incorporated in Q1 2022 and held it in 5 quarters.
Two Sigma Securities's Quantum-Si Incorporated position peaked at $74.2K in Q2 2025.
125 funds tracked by Wall St. Rank held Quantum-Si Incorporated as of Q3 2025.

Based on Two Sigma Securities's 13F filing for Q3 2025, filed 14 Nov 2025.