Jeff Yass’s iSpecimen ISPC Stock Holding History

Jeff Yass’s Portfolio ISPC Stock Details ISPC Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	–	Sell	-377	Closed	-$3.92K	–	13611
2025 Q4	$3.92K	Buy	+377	New	+$9.55K	﹤0.01%	12104
2023 Q4	–	Sell	-28	Closed	-$14.1K	–	12822
2023 Q3	$14.1K	Buy	+28	New	+$24.7K	﹤0.01%	11672
2023 Q2	–	Sell	-16	Closed	-$17.3K	–	12598
2023 Q1	$17.3K	Buy	+16	New	+$19.4K	﹤0.01%	12081
2021 Q3	–	Sell	-15	Closed	-$85K	–	13140
2021 Q2	$85K	Buy	+15	New	+$86.4K	﹤0.01%	12151

Other funds holding ISPC

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Jane Street New York $1.21T AUM 78.12% 1-Year Est. Return

UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return

Citadel Advisors Miami, Florida $875B AUM 40.91% 1-Year Est. Return

Vanguard Fiduciary Trust Malvern, Pennsylvania $454B AUM

StoneX Group New York $2.48B AUM 33.54% 1-Year Est. Return

TRCT

Tower Research Capital (TRC) New York $4.08B AUM 58.77% 1-Year Est. Return

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

SBI Securities Tokyo, Japan $4.4B AUM 74.26% 1-Year Est. Return

Jeff Yass's ISPC Position: Q1 2026 in Review

Jeff Yass sold out of iSpecimen (ISPC) in Q1 2026, closing a stake of 377 shares — an estimated $3.92K sold.

Jeff Yass first reported a position in ISPC in Q2 2021 and held it in 4 quarters. The position peaked at $85K in Q2 2021. 9 funds tracked by Wall St. Rank hold ISPC as of Q1 2026.

Jeff Yass reported no remaining iSpecimen position as of Q1 2026 after selling out during the quarter.
Jeff Yass sold 377 iSpecimen shares in Q1 2026, an estimated $3.92K.
Jeff Yass first reported a position in iSpecimen in Q2 2021 and held it in 4 quarters.
Jeff Yass's iSpecimen position peaked at $85K in Q2 2021.
9 funds tracked by Wall St. Rank held iSpecimen as of Q1 2026.

Based on Susquehanna International Group's 13F filing for Q1 2026, filed 15 May 2026.