EC
DAWN

EcoR1 Capital’s Day One Biopharmaceuticals DAWN Stock Holding History

EcoR1 Capital’s Portfolio DAWN Stock Details DAWN Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q3 		– Sell
-862,068
Closed -$5.6M – 33
2025
Q2 		$5.6M Hold
862,068
– – 0.33% 30
2025
Q1 		$6.84M Hold
862,068
– – 0.41% 28
2024
Q4 		$10.9M Hold
862,068
– – 0.41% 38
2024
Q3 		$12M Buy
+862,068
New +$12.3M 0.41% 40

Other funds holding DAWN

Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
AVLSA
Atlas Venture Life Science Advisors Cambridge, Massachusetts $790M AUM 223.66% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
DM
Deerfield Management New York $8.48B AUM 99.04% 1-Year Est. Return
Franklin Resources
Franklin Resources San Mateo, California $408B AUM 30.18% 1-Year Est. Return
RCMNY
Rubric Capital Management (New York) New York $9.44B AUM 68.42% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
VPC
Vestal Point Capital New York $3.58B AUM 189.12% 1-Year Est. Return
Pictet Asset Management
Pictet Asset Management Carouge, Switzerland $94.8B AUM 24.11% 1-Year Est. Return

EcoR1 Capital's DAWN Position: Q3 2025 in Review

EcoR1 Capital sold out of Day One Biopharmaceuticals (DAWN) in Q3 2025, closing a stake of 862,068 shares — an estimated $5.6M sold.

EcoR1 Capital first reported a position in DAWN in Q3 2024 and held it in 4 quarters. The position peaked at $12M in Q3 2024. 172 funds tracked by Wall St. Rank hold DAWN as of Q3 2025.

  • EcoR1 Capital reported no remaining Day One Biopharmaceuticals position as of Q3 2025 after selling out during the quarter.
  • EcoR1 Capital sold 862,068 Day One Biopharmaceuticals shares in Q3 2025, an estimated $5.6M.
  • EcoR1 Capital first reported a position in Day One Biopharmaceuticals in Q3 2024 and held it in 4 quarters.
  • EcoR1 Capital's Day One Biopharmaceuticals position peaked at $12M in Q3 2024.
  • 172 funds tracked by Wall St. Rank held Day One Biopharmaceuticals as of Q3 2025.

Based on EcoR1 Capital's 13F filing for Q3 2025, filed 14 Nov 2025.