PMAM
IMSR

Picton Mahoney Asset Management’s Terrestrial Energy IMSR Stock Holding History

Picton Mahoney Asset Management’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
-42,081
Closed -$691K – 1383
2025
Q3 		$691K Sell
42,081
-900,000
-96% -$10.7M 0.01% 590
2025
Q2 		$10.5M Sell
942,081
-837,919
-47% -$9.32M 0.11% 182
2025
Q1 		$18.7M Sell
1,780,000
-200,000
-10% -$2.03M 0.32% 62
2024
Q4 		$19.8M Buy
+1,980,000
New +$19.8M 0.4% 54

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

Picton Mahoney Asset Management's IMSR Position: Q4 2025 in Review

Picton Mahoney Asset Management sold out of Terrestrial Energy (IMSR) in Q4 2025, closing a stake of 42,081 shares — an estimated $691K sold.

Picton Mahoney Asset Management first reported a position in IMSR in Q4 2024 and held it in 4 quarters. The position peaked at $19.8M in Q4 2024. 82 funds tracked by Wall St. Rank hold IMSR as of Q4 2025.

  • Picton Mahoney Asset Management reported no remaining Terrestrial Energy position as of Q4 2025 after selling out during the quarter.
  • Picton Mahoney Asset Management sold 42,081 Terrestrial Energy shares in Q4 2025, an estimated $691K.
  • Picton Mahoney Asset Management first reported a position in Terrestrial Energy in Q4 2024 and held it in 4 quarters.
  • Picton Mahoney Asset Management's Terrestrial Energy position peaked at $19.8M in Q4 2024.
  • 82 funds tracked by Wall St. Rank held Terrestrial Energy as of Q4 2025.

Based on Picton Mahoney Asset Management's 13F filing for Q4 2025, filed 11 Feb 2026.