Jeff Yass’s ASP Isotopes ASPI Stock Holding History

Jeff Yass’s Portfolio ASPI Stock Details ASPI Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$4.39M	Sell	705,153 -352,187	-33%	-$2.07M	﹤0.01%	4880
2026 Q1	$4.67M	Sell	1,057,340 -459,303	-30%	-$2.72M	﹤0.01%	4356
2025 Q4	$8.11M	Buy	1,516,643 +174,860	+13%	+$1.39M	﹤0.01%	3323
2025 Q3	$12.9M	Buy	1,341,783 +1,239,492	+1,212%	+$11.4M	﹤0.01%	2711
2025 Q2	$753K	Sell	102,291 -175,555	-63%	-$1.18M	﹤0.01%	8172
2025 Q1	$1.3M	Sell	277,846 -106,626	-28%	-$532K	﹤0.01%	6586
2024 Q4	$1.74M	Buy	384,472 +358,735	+1,394%	+$1.91M	﹤0.01%	5623
2024 Q3	$71.5K	Buy	25,737 +14,814	+136%	+$39.4K	﹤0.01%	11229
2024 Q2	$33.4K	Buy	+10,923	New	+$42.1K	﹤0.01%	11536
2023 Q4	–	Sell	-14,692	Closed	-$14K	–	12305
2023 Q3	$14K	Buy	+14,692	New	+$15.2K	﹤0.01%	11674
2023 Q2	–	Sell	-27,881	Closed	-$23.8K	–	12012
2023 Q1	$23.8K	Buy	+27,881	New	+$43.7K	﹤0.01%	12001

Other funds holding ASPI

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

ECA

Encompass Capital Advisors New York $2.81B AUM 198.36% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

RIM

Rovida Investment Management Grand Cayman, Cayman Islands $1.47B AUM 142.45% 1-Year Est. Return

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

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

Alyeska Investment Group Chicago, Illinois $38.9B AUM 28.51% 1-Year Est. Return

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

ETC

Exchange Traded Concepts Oklahoma City, Oklahoma $21.9B AUM 68.6% 1-Year Est. Return

AIC

AWM Investment Company New York $1.15B AUM 201.65% 1-Year Est. Return

Jeff Yass's ASPI Position: Q2 2026 in Review

Jeff Yass reduced its ASP Isotopes (ASPI) stake by 33% in Q2 2026, selling an estimated $2.07M and leaving 705,153 shares worth $4.39M. The position accounts for ﹤0.01% of the portfolio, ranked #4880.

Jeff Yass first reported a position in ASPI in Q1 2023 and has held it in 11 quarters since. The position peaked at $12.9M in Q3 2025. 185 funds tracked by Wall St. Rank hold ASPI as of Q2 2026.

Jeff Yass held 705,153 shares of ASP Isotopes worth $4.39M as of Q2 2026.
Jeff Yass sold 352,187 ASP Isotopes shares in Q2 2026, an estimated $2.07M.
ASP Isotopes made up ﹤0.01% of Jeff Yass's portfolio in Q2 2026, its #4880 holding.
Jeff Yass first reported a position in ASP Isotopes in Q1 2023 and has held it in 11 quarters since.
Jeff Yass's ASP Isotopes position peaked at $12.9M in Q3 2025.
185 funds tracked by Wall St. Rank held ASP Isotopes as of Q2 2026.

Based on Susquehanna International Group's 13F filing for Q2 2026, filed 14 Aug 2026.