PAMP
IMSR

Polar Asset Management Partners’s Terrestrial Energy IMSR Stock Holding History

Polar Asset Management Partners’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
-257,307
Closed -$2.86M – 840
2025
Q2 		$2.86M Sell
257,307
-98,538
-28% -$1.1M 0.04% 274
2025
Q1 		$3.74M Buy
+355,845
New +$3.61M 0.09% 214

Other funds holding IMSR

D.E. Shaw & Co
D.E. Shaw & Co New York $166B AUM 43.98% 1-Year Est. Return
Citadel Advisors
Citadel Advisors Miami, Florida $618B AUM 30.34% 1-Year Est. Return
Balyasny Asset Management
Balyasny Asset Management Chicago, Illinois $77.1B AUM 42.89% 1-Year Est. Return
LP
LMR Partners London, United Kingdom $45.4B AUM 60.68% 1-Year Est. Return
Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return
Susquehanna International Group
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
CF
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
SG
Sourcerock Group Denver, Colorado $2.48B AUM 72.25% 1-Year Est. Return

Polar Asset Management Partners's IMSR Position: Q3 2025 in Review

Polar Asset Management Partners sold out of Terrestrial Energy (IMSR) in Q3 2025, closing a stake of 257,307 shares — an estimated $2.86M sold.

Polar Asset Management Partners first reported a position in IMSR in Q1 2025 and held it in 2 quarters. The position peaked at $3.74M in Q1 2025. 66 funds tracked by Wall St. Rank hold IMSR as of Q3 2025.

  • Polar Asset Management Partners reported no remaining Terrestrial Energy position as of Q3 2025 after selling out during the quarter.
  • Polar Asset Management Partners sold 257,307 Terrestrial Energy shares in Q3 2025, an estimated $2.86M.
  • Polar Asset Management Partners first reported a position in Terrestrial Energy in Q1 2025 and held it in 2 quarters.
  • Polar Asset Management Partners's Terrestrial Energy position peaked at $3.74M in Q1 2025.
  • 66 funds tracked by Wall St. Rank held Terrestrial Energy as of Q3 2025.

Based on Polar Asset Management Partners's 13F filing for Q3 2025, filed 14 Nov 2025.