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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 		$16.3M Sell
2,612,700
-372,600
-12% -$2.19M ﹤0.01% 2692
2026
Q1 		$13.2M Buy
2,985,300
+854,200
+40% +$5.05M ﹤0.01% 2718
2025
Q4 		$11.4M Buy
2,131,100
+362,300
+20% +$2.88M ﹤0.01% 2891
2025
Q3 		$17M Buy
1,768,800
+337,000
+24% +$3.11M ﹤0.01% 2380
2025
Q2 		$10.5M Buy
1,431,800
+822,200
+135% +$5.51M ﹤0.01% 2756
2025
Q1 		$2.86M Buy
609,600
+417,500
+217% +$2.08M ﹤0.01% 4747
2024
Q4 		$870K Buy
+192,100
New +$1.02M ﹤0.01% 7316

Other funds holding ASPI

BlackRock
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
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
UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Alyeska Investment Group
Alyeska Investment Group Chicago, Illinois $38.9B AUM 28.51% 1-Year Est. Return
State Street
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.