Governors Lane’s Terrestrial Energy IMSR Stock Holding History

Governors Lane’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
2025 Q3	–	Sell	-300,000	Closed	-$3.33M	–	164
2025 Q2	$3.33M	Buy	+300,000	New	+$3.34M	0.3%	77

Other funds holding IMSR

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

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

Balyasny Asset Management Chicago, Illinois $77.1B AUM 42.89% 1-Year Est. Return

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

Millennium Management New York $240B AUM 35.51% 1-Year Est. Return

Susquehanna International Group Bala Cynwyd, Pennsylvania $893B AUM 36.07% 1-Year Est. Return

VCM

Vennlight Capital Management Weston, Connecticut $99M AUM 77.4% 1-Year Est. Return

Cantor Fitzgerald New York $6.78B AUM 29.01% 1-Year Est. Return

DKCM

Davidson Kempner Capital Management New York $7.33B AUM 56.47% 1-Year Est. Return

Sourcerock Group Denver, Colorado $2.48B AUM 72.25% 1-Year Est. Return

Governors Lane's IMSR Position: Q3 2025 in Review

Governors Lane sold out of Terrestrial Energy (IMSR) in Q3 2025, closing a stake of 300,000 shares — an estimated $3.33M sold.

Governors Lane first reported a position in IMSR in Q2 2025 and held it in 1 quarter. The position peaked at $3.33M in Q2 2025. 66 funds tracked by Wall St. Rank hold IMSR as of Q3 2025.

Governors Lane reported no remaining Terrestrial Energy position as of Q3 2025 after selling out during the quarter.
Governors Lane sold 300,000 Terrestrial Energy shares in Q3 2025, an estimated $3.33M.
Governors Lane first reported a position in Terrestrial Energy in Q2 2025 and held it in 1 quarter.
Governors Lane's Terrestrial Energy position peaked at $3.33M in Q2 2025.
66 funds tracked by Wall St. Rank held Terrestrial Energy as of Q3 2025.

Based on Governors Lane's 13F filing for Q3 2025, filed 14 Nov 2025.