Jane Street
IMSR

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
Q1 		$2.47M Buy
411,600
+232,500
+130% +$1.84M ﹤0.01% 4694
2025
Q4 		$1.09M Buy
179,100
+31,800
+22% +$425K ﹤0.01% 5939
2025
Q3 		$2.42M Buy
+147,300
New +$1.75M ﹤0.01% 4589

Other funds holding IMSR

ETC
Exchange Traded Concepts Oklahoma City, Oklahoma $21.9B AUM 68.6% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Citadel Advisors
Citadel Advisors Miami, Florida $618B AUM 30.34% 1-Year Est. Return
D.E. Shaw & Co
D.E. Shaw & Co New York $166B AUM 43.98% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return
Alyeska Investment Group
Alyeska Investment Group Chicago, Illinois $35.4B AUM 33.54% 1-Year Est. Return
LP
LMR Partners London, United Kingdom $45.4B AUM 60.68% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
VCM
Vennlight Capital Management Weston, Connecticut $99M AUM 77.4% 1-Year Est. Return

Jane Street's IMSR Position: Q1 2026 in Review

Jane Street sold out of Terrestrial Energy (IMSR) in Q1 2026, closing a stake of 301,213 shares — an estimated $2.39M sold.

Jane Street first reported a position in IMSR in Q3 2025 and held it in 2 quarters. The position peaked at $2.09M in Q3 2025. 88 funds tracked by Wall St. Rank hold IMSR as of Q1 2026.

  • Jane Street reported no remaining Terrestrial Energy position as of Q1 2026 after selling out during the quarter.
  • Jane Street sold 301,213 Terrestrial Energy shares in Q1 2026, an estimated $2.39M.
  • Jane Street first reported a position in Terrestrial Energy in Q3 2025 and held it in 2 quarters.
  • Jane Street's Terrestrial Energy position peaked at $2.09M in Q3 2025.
  • 88 funds tracked by Wall St. Rank held Terrestrial Energy as of Q1 2026.

Based on Jane Street's 13F filing for Q1 2026, filed 12 May 2026.