WRBC
IMSR

W.R. Berkley Corp’s Terrestrial Energy IMSR Stock Holding History

W.R. Berkley Corp’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
Q4 		– Sell
-160,672
Closed -$2.64M – 300
2025
Q3 		$2.64M Sell
160,672
-237,349
-60% -$2.82M 0.15% 119
2025
Q2 		$4.42M Buy
398,021
+100,781
+34% +$1.12M 0.23% 85
2025
Q1 		$3.13M Hold
297,240
– – 0.18% 83
2024
Q4 		$2.98M Buy
+297,240
New +$2.97M 0.12% 78

Other funds holding IMSR

Citadel Advisors
Citadel Advisors Miami, Florida $618B AUM 30.34% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
Balyasny Asset Management
Balyasny Asset Management Chicago, Illinois $77.1B AUM 42.89% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
D.E. Shaw & Co
D.E. Shaw & Co New York $166B AUM 43.98% 1-Year Est. Return
SIG
Senator Investment Group New York $2.18B AUM 58.56% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Verition Fund Management
Verition Fund Management Greenwich, Connecticut $15.4B AUM 30.69% 1-Year Est. Return
MI
MMCAP International Grand Cayman, Cayman Islands $1.16B AUM 77.9% 1-Year Est. Return

W.R. Berkley Corp's IMSR Position: Q4 2025 in Review

W.R. Berkley Corp sold out of Terrestrial Energy (IMSR) in Q4 2025, closing a stake of 160,672 shares — an estimated $2.64M sold.

W.R. Berkley Corp first reported a position in IMSR in Q4 2024 and held it in 4 quarters. The position peaked at $4.42M in Q2 2025. 82 funds tracked by Wall St. Rank hold IMSR as of Q4 2025.

  • W.R. Berkley Corp reported no remaining Terrestrial Energy position as of Q4 2025 after selling out during the quarter.
  • W.R. Berkley Corp sold 160,672 Terrestrial Energy shares in Q4 2025, an estimated $2.64M.
  • W.R. Berkley Corp first reported a position in Terrestrial Energy in Q4 2024 and held it in 4 quarters.
  • W.R. Berkley Corp's Terrestrial Energy position peaked at $4.42M in Q2 2025.
  • 82 funds tracked by Wall St. Rank held Terrestrial Energy as of Q4 2025.

Based on W.R. Berkley Corp's 13F filing for Q4 2025, filed 13 Feb 2026.