Citadel Advisors
IMSR

Citadel Advisors’s Terrestrial Energy IMSR Stock Holding History

Citadel Advisors’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 		$755K Buy
125,800
+16,500
+15% +$131K ﹤0.01% 8337
2025
Q4 		$668K Buy
109,300
+700
+0.6% +$9.36K ﹤0.01% 8312
2025
Q3 		$1.78M Buy
+108,600
New +$1.29M ﹤0.01% 6314

Other funds holding IMSR

ETC
Exchange Traded Concepts Oklahoma City, Oklahoma $21.9B AUM 68.6% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
D.E. Shaw & Co
D.E. Shaw & Co New York $166B AUM 43.98% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 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

Citadel Advisors's IMSR Position: Q1 2026 in Review

Citadel Advisors reduced its Terrestrial Energy (IMSR) stake by 37% in Q1 2026, selling an estimated $5.96M and leaving 1,277,258 shares worth $7.67M. The position accounts for ﹤0.01% of the portfolio, ranked #3650.

Citadel Advisors first reported a position in IMSR in Q2 2025 and has held it in 4 quarters since. The position peaked at $16.9M in Q3 2025. 88 funds tracked by Wall St. Rank hold IMSR as of Q1 2026.

  • Citadel Advisors held 1,277,258 shares of Terrestrial Energy worth $7.67M as of Q1 2026.
  • Citadel Advisors sold 751,950 Terrestrial Energy shares in Q1 2026, an estimated $5.96M.
  • Terrestrial Energy made up ﹤0.01% of Citadel Advisors's portfolio in Q1 2026, its #3650 holding.
  • Citadel Advisors first reported a position in Terrestrial Energy in Q2 2025 and has held it in 4 quarters since.
  • Citadel Advisors's Terrestrial Energy position peaked at $16.9M in Q3 2025.
  • 88 funds tracked by Wall St. Rank held Terrestrial Energy as of Q1 2026.

Based on Citadel Advisors's 13F filing for Q1 2026, filed 15 May 2026.