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EcoR1 Capital’s Eton Pharmaceutcials ETON Stock Holding History

EcoR1 Capital’s Portfolio ETON Stock Details ETON Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$78.6M Hold
2,171,938
– – 3.82% 5
2026
Q1 		$53.6M Buy
2,171,938
+141,394
+7% +$2.47M 2.27% 10
2025
Q4 		$34.3M Hold
2,030,544
– – 1.56% 13
2025
Q3 		$44.1M Hold
2,030,544
– – 2.12% 13
2025
Q2 		$28.9M Buy
2,030,544
+91,256
+5% +$1.44M 1.71% 14
2025
Q1 		$25.2M Buy
1,939,288
+109,685
+6% +$1.66M 1.49% 13
2024
Q4 		$24.4M Buy
1,829,603
+1,263,528
+223% +$12.8M 0.92% 22
2024
Q3 		$3.4M Buy
+566,075
New +$2.39M 0.12% 51

Other funds holding ETON

OM
Opaleye Management Boston, Massachusetts $1.1B AUM 197.64% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
NCM
Nantahala Capital Management New Canaan, Connecticut $3.01B AUM 119.46% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
OAM
Oberweis Asset Management Lisle, Illinois $4.84B AUM 160.95% 1-Year Est. Return
NPT
National Philanthropic Trust Jenkintown, Pennsylvania $6.92B AUM 24.7% 1-Year Est. Return
WIM
Westside Investment Management Santa Monica, California $761M AUM 39.85% 1-Year Est. Return

EcoR1 Capital's ETON Position: Q2 2026 in Review

EcoR1 Capital held its Eton Pharmaceutcials (ETON) position steady in Q2 2026 at 2,171,938 shares worth $78.6M. The position accounts for 3.82% of the portfolio, ranked #5.

EcoR1 Capital first reported a position in ETON in Q3 2024 and has held it in 8 quarters since. 165 funds tracked by Wall St. Rank hold ETON as of Q2 2026.

  • EcoR1 Capital held 2,171,938 shares of Eton Pharmaceutcials worth $78.6M as of Q2 2026.
  • EcoR1 Capital left its Eton Pharmaceutcials share count unchanged in Q2 2026.
  • Eton Pharmaceutcials made up 3.82% of EcoR1 Capital's portfolio in Q2 2026, its #5 holding.
  • EcoR1 Capital first reported a position in Eton Pharmaceutcials in Q3 2024 and has held it in 8 quarters since.
  • 165 funds tracked by Wall St. Rank held Eton Pharmaceutcials as of Q2 2026.

Based on EcoR1 Capital's 13F filing for Q2 2026, filed 14 Aug 2026.