Jim Simons
IMSR

Jim Simons’s Terrestrial Energy IMSR Stock Holding History

Jim Simons’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
Q2 		$1.3M Sell
183,800
-224,100
-55% -$1.66M ﹤0.01% 2188
2026
Q1 		$2.45M Buy
407,900
+235,100
+136% +$1.86M ﹤0.01% 1790
2025
Q4 		$1.06M Buy
+172,800
New +$2.31M ﹤0.01% 2242

Other funds holding IMSR

VCM
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
ETC
Exchange Traded Concepts Oklahoma City, Oklahoma $21.9B AUM 68.6% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Pacer Advisors
Pacer Advisors Malvern, Pennsylvania $39.3B AUM 27.96% 1-Year Est. Return
WG
Winton Group London, United Kingdom $3.09B AUM 40.4% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
VFT
Vanguard Fiduciary Trust Malvern, Pennsylvania $454B AUM

Jim Simons's IMSR Position: Q2 2026 in Review

Jim Simons reduced its Terrestrial Energy (IMSR) stake by 55% in Q2 2026, selling an estimated $1.66M and leaving 183,800 shares worth $1.3M. The position accounts for ﹤0.01% of the portfolio, ranked #2188.

Jim Simons first reported a position in IMSR in Q4 2025 and has held it in 3 quarters since. The position peaked at $2.45M in Q1 2026. 61 funds tracked by Wall St. Rank hold IMSR as of Q2 2026.

  • Jim Simons held 183,800 shares of Terrestrial Energy worth $1.3M as of Q2 2026.
  • Jim Simons sold 224,100 Terrestrial Energy shares in Q2 2026, an estimated $1.66M.
  • Terrestrial Energy made up ﹤0.01% of Jim Simons's portfolio in Q2 2026, its #2188 holding.
  • Jim Simons first reported a position in Terrestrial Energy in Q4 2025 and has held it in 3 quarters since.
  • Jim Simons's Terrestrial Energy position peaked at $2.45M in Q1 2026.
  • 61 funds tracked by Wall St. Rank held Terrestrial Energy as of Q2 2026.

Based on Renaissance Technologies's 13F filing for Q2 2026, filed 13 Aug 2026.