Virtu Financial’s Quantum-Si Incorporated QSI Stock Holding History

Virtu Financial’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	$50K	Sell	64,751 -173,628	-73%	-$180K	﹤0.01%	1290
2025 Q4	$262K	Buy	+238,379	New	+$388K	0.01%	906
2025 Q2	–	Sell	-34,830	Closed	-$42K	–	1944
2025 Q1	$42K	Buy	+34,830	New	+$66.7K	﹤0.01%	1031
2024 Q3	–	Sell	-101,301	Closed	-$106K	–	1798
2024 Q2	$106K	Buy	101,301 +51,313	+103%	+$82.3K	0.01%	818
2024 Q1	$98K	Buy	+49,988	New	+$87.3K	0.01%	924
2023 Q4	–	Sell	-35,358	Closed	-$59K	–	1927
2023 Q3	$59K	Buy	+35,358	New	+$85.2K	0.01%	890
2022 Q4	–	Sell	-12,509	Closed	-$34K	–	2051
2022 Q3	$34K	Buy	+12,509	New	+$40K	﹤0.01%	1288
2022 Q2	–	Sell	-11,716	Closed	-$55K	–	1976
2022 Q1	$55K	Sell	11,716 -31,721	-73%	-$155K	﹤0.01%	1107
2021 Q4	$342K	Buy	43,437 +26,502	+156%	+$200K	0.04%	546
2021 Q3	$141K	Buy	+16,935	New	+$167K	0.01%	1029

Other funds holding QSI

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 Minato-Ku, Tokyo, Japan $175B AUM 40.63% 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

AQR Capital Management Greenwich, Connecticut $218B AUM 29.41% 1-Year Est. Return

UBS Group Zurich, Switzerland $666B AUM 30.12% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

Virtu Financial's QSI Position: Q1 2026 in Review

Virtu Financial reduced its Quantum-Si Incorporated (QSI) stake by 73% in Q1 2026, selling an estimated $180K and leaving 64,751 shares worth $50K. The position accounts for ﹤0.01% of the portfolio, ranked #1290.

Virtu Financial first reported a position in QSI in Q3 2021 and has held it in 10 quarters since. The position peaked at $342K in Q4 2021. 156 funds tracked by Wall St. Rank hold QSI as of Q1 2026.

Virtu Financial held 64,751 shares of Quantum-Si Incorporated worth $50K as of Q1 2026.
Virtu Financial sold 173,628 Quantum-Si Incorporated shares in Q1 2026, an estimated $180K.
Quantum-Si Incorporated made up ﹤0.01% of Virtu Financial's portfolio in Q1 2026, its #1290 holding.
Virtu Financial first reported a position in Quantum-Si Incorporated in Q3 2021 and has held it in 10 quarters since.
Virtu Financial's Quantum-Si Incorporated position peaked at $342K in Q4 2021.
156 funds tracked by Wall St. Rank held Quantum-Si Incorporated as of Q1 2026.

Based on Virtu Financial's 13F filing for Q1 2026, filed 14 May 2026.