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	–	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

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 Miami, Florida $618B AUM 30.34% 1-Year Est. Return

D.E. Shaw & Co New York $166B AUM 43.98% 1-Year Est. Return

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return

Alyeska Investment Group Chicago, Illinois $35.4B AUM 33.54% 1-Year Est. Return

LMR Partners London, United Kingdom $45.4B AUM 60.68% 1-Year Est. Return

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.