BlackRock
IMSR

BlackRock’s Terrestrial Energy IMSR Stock Holding History

BlackRock’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
2026
Q1 		$6.73M Buy
1,120,885
+28,384
+3% +$225K ﹤0.01% 3711
2025
Q4 		$6.68M Buy
+1,092,501
New +$14.6M ﹤0.01% 3707

Other funds holding IMSR

ETC
Exchange Traded Concepts Oklahoma City, Oklahoma $14.1B AUM 25.71% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Citadel Advisors
Citadel Advisors Miami, Florida $618B AUM 30.34% 1-Year Est. Return
D.E. Shaw & Co
D.E. Shaw & Co New York $166B AUM 43.98% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return
Alyeska Investment Group
Alyeska Investment Group Chicago, Illinois $35.4B AUM 33.54% 1-Year Est. Return
LP
LMR Partners London, United Kingdom $45.4B AUM 60.68% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
VCM
Vennlight Capital Management Weston, Connecticut $99M AUM 77.4% 1-Year Est. Return
WG
Winton Group London, United Kingdom $2.85B AUM 30.73% 1-Year Est. Return

BlackRock's IMSR Position: Q1 2026 in Review

BlackRock increased its Terrestrial Energy (IMSR) stake by 2.6% in Q1 2026, buying an estimated $225K and bringing the position to 1,120,885 shares worth $6.73M. The position accounts for ﹤0.01% of the portfolio, ranked #3711.

BlackRock first reported a position in IMSR in Q4 2025 and has held it in 2 quarters since. 88 funds tracked by Wall St. Rank hold IMSR as of Q1 2026.

  • BlackRock held 1,120,885 shares of Terrestrial Energy worth $6.73M as of Q1 2026.
  • BlackRock bought 28,384 Terrestrial Energy shares in Q1 2026, an estimated $225K.
  • Terrestrial Energy made up ﹤0.01% of BlackRock's portfolio in Q1 2026, its #3711 holding.
  • BlackRock first reported a position in Terrestrial Energy in Q4 2025 and has held it in 2 quarters since.
  • 88 funds tracked by Wall St. Rank held Terrestrial Energy as of Q1 2026.

Based on BlackRock's 13F filing for Q1 2026, filed 13 May 2026.