Jim Simons
IMRX icon

Jim Simons’s Immuneering IMRX Stock Holding History

Jim Simons’s Portfolio IMRX Stock Details IMRX Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$384K Sell
72,875
-79,425
-52% -$407K ﹤0.01% 2712
2025
Q4 		$1M Buy
152,300
+117,300
+335% +$753K ﹤0.01% 2276
2025
Q3 		$245K Buy
35,000
+16,800
+92% +$87.2K ﹤0.01% 3079
2025
Q2 		$61.3K Buy
+18,200
New +$31.2K ﹤0.01% 3366
2024
Q3 		– Sell
-349,100
Closed -$447K – 3699
2024
Q2 		$447K Buy
+349,100
New +$574K ﹤0.01% 2746
2022
Q3 		– Sell
-25,537
Closed -$138K – 4210
2022
Q2 		$138K Sell
25,537
-32,063
-56% -$171K ﹤0.01% 3759
2022
Q1 		$373K Buy
+57,600
New +$553K ﹤0.01% 3364

Other funds holding IMRX

Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
S
Sanofi Paris, France $534M AUM 205.96% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Marshall Wace
Marshall Wace London, United Kingdom $100B AUM 35.1% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
OCM
Occam Crest Management Darien, Connecticut $165M AUM
Citadel Advisors
Citadel Advisors Miami, Florida $618B AUM 30.34% 1-Year Est. Return

Jim Simons's IMRX Position: Q1 2026 in Review

Jim Simons reduced its Immuneering (IMRX) stake by 52% in Q1 2026, selling an estimated $407K and leaving 72,875 shares worth $384K. The position accounts for ﹤0.01% of the portfolio, ranked #2712.

Jim Simons first reported a position in IMRX in Q1 2022 and has held it in 7 quarters since. The position peaked at $1M in Q4 2025. 95 funds tracked by Wall St. Rank hold IMRX as of Q1 2026.

  • Jim Simons held 72,875 shares of Immuneering worth $384K as of Q1 2026.
  • Jim Simons sold 79,425 Immuneering shares in Q1 2026, an estimated $407K.
  • Immuneering made up ﹤0.01% of Jim Simons's portfolio in Q1 2026, its #2712 holding.
  • Jim Simons first reported a position in Immuneering in Q1 2022 and has held it in 7 quarters since.
  • Jim Simons's Immuneering position peaked at $1M in Q4 2025.
  • 95 funds tracked by Wall St. Rank held Immuneering as of Q1 2026.

Based on Renaissance Technologies's 13F filing for Q1 2026, filed 14 May 2026.