WA
IMSRW

Whitebox Advisors’s Terrestrial Energy Warrant IMSRW Stock Holding History

Whitebox Advisors’s Portfolio IMSRW Stock Details IMSRW Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q4 		– Sell
-200,000
Closed -$1.2M – 531
2025
Q3 		$1.2M Hold
200,000
– – 0.02% 245
2025
Q2 		$470K Hold
200,000
– – 0.01% 245
2025
Q1 		$138K Buy
+200,000
New +$47K ﹤0.01% 213

Other funds holding IMSRW

LP
LMR Partners London, United Kingdom $45.4B AUM 60.47% 1-Year Est. Return
CF
Cantor Fitzgerald New York $6.78B AUM 28.97% 1-Year Est. Return
PEAK6
PEAK6 Chicago, Illinois $48.6B AUM 40.57% 1-Year Est. Return
MF
Magnetar Financial Evanston, Illinois $9.84B AUM 190.63% 1-Year Est. Return
CM
Caption Management Oklahoma City, Oklahoma $17.1B AUM 70.99% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
HCM
Highbridge Capital Management New York $3.09B AUM 31.21% 1-Year Est. Return
ACM
Arosa Capital Management Miami Beach, Florida $660M AUM 210.26% 1-Year Est. Return
Hudson Bay Capital Management
Hudson Bay Capital Management Stamford, Connecticut $29B AUM 30.2% 1-Year Est. Return
Balyasny Asset Management
Balyasny Asset Management Chicago, Illinois $77.1B AUM 42.89% 1-Year Est. Return

Whitebox Advisors's IMSRW Position: Q4 2025 in Review

Whitebox Advisors sold out of Terrestrial Energy Warrant (IMSRW) in Q4 2025, closing a stake of 200,000 shares — an estimated $1.2M sold.

Whitebox Advisors first reported a position in IMSRW in Q1 2025 and held it in 3 quarters. The position peaked at $1.2M in Q3 2025. 27 funds tracked by Wall St. Rank hold IMSRW as of Q4 2025.

  • Whitebox Advisors reported no remaining Terrestrial Energy Warrant position as of Q4 2025 after selling out during the quarter.
  • Whitebox Advisors sold 200,000 Terrestrial Energy Warrant shares in Q4 2025, an estimated $1.2M.
  • Whitebox Advisors first reported a position in Terrestrial Energy Warrant in Q1 2025 and held it in 3 quarters.
  • Whitebox Advisors's Terrestrial Energy Warrant position peaked at $1.2M in Q3 2025.
  • 27 funds tracked by Wall St. Rank held Terrestrial Energy Warrant as of Q4 2025.

Based on Whitebox Advisors's 13F filing for Q4 2025, filed 17 Feb 2026.