Jane Street
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Jane Street’s Terrestrial Energy IMSR Stock Holding History

Jane Street’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 		$1.7M Buy
+240,719
New +$1.78M ﹤0.01% 5468
2026
Q1 		– Sell
-301,213
Closed -$2.39M – 13325
2025
Q4 		$1.84M Buy
301,213
+174,023
+137% +$2.33M ﹤0.01% 4969
2025
Q3 		$2.09M Buy
+127,190
New +$1.51M ﹤0.01% 4855

Other funds holding IMSR

Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Exchange Traded Concepts
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
HRT Financial
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
LMR Partners
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

Jane Street's IMSR Position: Q2 2026 in Review

Jane Street opened a new position in Terrestrial Energy (IMSR) in Q2 2026: 240,719 shares worth $1.7M. The stake represents ﹤0.01% of the portfolio and ranks #5468 among its holdings. This is a return to the name: Jane Street previously reported a position in IMSR as recently as Q4 2025.

Jane Street first reported a position in IMSR in Q3 2025 and has held it in 3 quarters since. The position peaked at $2.09M in Q3 2025. 110 funds tracked by Wall St. Rank hold IMSR as of Q2 2026.

  • Jane Street held 240,719 shares of Terrestrial Energy worth $1.7M as of Q2 2026.
  • Terrestrial Energy was a new Jane Street position in Q2 2026.
  • Terrestrial Energy made up ﹤0.01% of Jane Street's portfolio in Q2 2026, its #5468 holding.
  • Jane Street first reported a position in Terrestrial Energy in Q3 2025 and has held it in 3 quarters since.
  • Jane Street's Terrestrial Energy position peaked at $2.09M in Q3 2025.
  • 110 funds tracked by Wall St. Rank held Terrestrial Energy as of Q2 2026.

Based on Jane Street's 13F filing for Q2 2026, filed 14 Aug 2026.