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EcoR1 Capital’s Immunome IMNM Stock Holding History

EcoR1 Capital’s Portfolio IMNM Stock Details IMNM Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		– Sell
-2,855,590
Closed -$61.3M – 36
2025
Q4 		$61.3M Sell
2,855,590
-1,223,825
-30% -$21.5M 2.78% 8
2025
Q3 		$47.8M Hold
4,079,415
– – 2.29% 12
2025
Q2 		$37.9M Hold
4,079,415
– – 2.25% 11
2025
Q1 		$27.5M Buy
4,079,415
+200,000
+5% +$1.92M 1.63% 12
2024
Q4 		$41.2M Hold
3,879,415
– – 1.56% 15
2024
Q3 		$56.7M Hold
3,879,415
– – 1.94% 13
2024
Q2 		$46.9M Hold
3,879,415
– – 1.44% 19
2024
Q1 		$95.7M Hold
3,879,415
– – 2.42% 14
2023
Q4 		$41.5M Buy
+3,879,415
New +$32.3M 1.08% 18

Other funds holding IMNM

Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $153B AUM 38.14% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
RG
Redmile Group San Francisco, California $1.49B AUM 208.7% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Primecap Management
Primecap Management Pasadena, California $169B AUM 114.72% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
DCM
Driehaus Capital Management Chicago, Illinois $17.3B AUM 211.34% 1-Year Est. Return
ES
Enavate Sciences Menlo Park, California $345M AUM 134.64% 1-Year Est. Return

EcoR1 Capital's IMNM Position: Q1 2026 in Review

EcoR1 Capital sold out of Immunome (IMNM) in Q1 2026, closing a stake of 2,855,590 shares — an estimated $61.3M sold.

EcoR1 Capital first reported a position in IMNM in Q4 2023 and held it in 9 quarters. The position peaked at $95.7M in Q1 2024. 202 funds tracked by Wall St. Rank hold IMNM as of Q1 2026.

  • EcoR1 Capital reported no remaining Immunome position as of Q1 2026 after selling out during the quarter.
  • EcoR1 Capital sold 2,855,590 Immunome shares in Q1 2026, an estimated $61.3M.
  • EcoR1 Capital first reported a position in Immunome in Q4 2023 and held it in 9 quarters.
  • EcoR1 Capital's Immunome position peaked at $95.7M in Q1 2024.
  • 202 funds tracked by Wall St. Rank held Immunome as of Q1 2026.

Based on EcoR1 Capital's 13F filing for Q1 2026, filed 15 May 2026.