JY
IMSR

Jeff Yass’s Terrestrial Energy IMSR Stock Holding History

Jeff Yass’s Portfolio IMSR Stock Details IMSR Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$4.77M Buy
673,400
+125,400
+23% +$927K ﹤0.01% 4707
2026
Q1 		$3.29M Buy
548,000
+181,300
+49% +$1.44M ﹤0.01% 5076
2025
Q4 		$2.24M Sell
366,700
-5,300
-1% -$70.9K ﹤0.01% 5417
2025
Q3 		$6.1M Buy
+372,000
New +$4.42M ﹤0.01% 3774

Other funds holding IMSR

Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
ETC
Exchange Traded Concepts Oklahoma City, Oklahoma $21.9B AUM 68.6% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return
HF
HRT Financial New York $54.8B AUM 81.03% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
LP
LMR Partners London, United Kingdom $26.8B AUM 68.38% 1-Year Est. Return
D.E. Shaw & Co
D.E. Shaw & Co New York $210B AUM 57.28% 1-Year Est. Return
Hudson Bay Capital Management
Hudson Bay Capital Management Stamford, Connecticut $36.8B AUM 42.13% 1-Year Est. Return

Jeff Yass's IMSR Position: Q2 2026 in Review

Jeff Yass increased its Terrestrial Energy (IMSR) stake by 73% in Q2 2026, buying an estimated $1.79M and bringing the position to 571,832 shares worth $4.05M. The position accounts for ﹤0.01% of the portfolio, ranked #5022.

Jeff Yass first reported a position in IMSR in Q1 2025 and has held it in 6 quarters since. The position peaked at $9.88M in Q3 2025. 108 funds tracked by Wall St. Rank hold IMSR as of Q2 2026.

  • Jeff Yass held 571,832 shares of Terrestrial Energy worth $4.05M as of Q2 2026.
  • Jeff Yass bought 241,556 Terrestrial Energy shares in Q2 2026, an estimated $1.79M.
  • Terrestrial Energy made up ﹤0.01% of Jeff Yass's portfolio in Q2 2026, its #5022 holding.
  • Jeff Yass first reported a position in Terrestrial Energy in Q1 2025 and has held it in 6 quarters since.
  • Jeff Yass's Terrestrial Energy position peaked at $9.88M in Q3 2025.
  • 108 funds tracked by Wall St. Rank held Terrestrial Energy as of Q2 2026.

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