Mariner
DAWN

Mariner’s Day One Biopharmaceuticals DAWN Stock Holding History

Mariner’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
2026
Q1 		$1.12M Buy
52,342
+21,175
+68% +$298K ﹤0.01% 1887
2025
Q4 		$290K Buy
+31,167
New +$260K ﹤0.01% 2874
2025
Q2 		– Sell
-14,885
Closed -$118K – 3525
2025
Q1 		$118K Buy
14,885
+3,216
+28% +$34.6K ﹤0.01% 3148
2024
Q4 		$148K Sell
11,669
-10,376
-47% -$144K ﹤0.01% 3095
2024
Q3 		$307K Buy
22,045
+12,018
+120% +$171K ﹤0.01% 2549
2024
Q2 		$138K Buy
+10,027
New +$147K ﹤0.01% 2886

Other funds holding DAWN

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
GCL
Glazer Capital LLC New York $4.71B AUM 81.93% 1-Year Est. Return
Fidelity International
Fidelity International Hamilton, Bermuda $129B AUM 30.83% 1-Year Est. Return
KC
Kryger Capital London, United Kingdom $1.41B AUM 86.31% 1-Year Est. Return
DM
Deerfield Management New York $8.48B AUM 99.04% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Balyasny Asset Management
Balyasny Asset Management Chicago, Illinois $77.1B AUM 42.89% 1-Year Est. Return
AA
AQR Arbitrage Greenwich, Connecticut $6.09B AUM 27.01% 1-Year Est. Return

Mariner's DAWN Position: Q1 2026 in Review

Mariner increased its Day One Biopharmaceuticals (DAWN) stake by 68% in Q1 2026, buying an estimated $298K and bringing the position to 52,342 shares worth $1.12M. The position accounts for ﹤0.01% of the portfolio, ranked #1887.

Mariner first reported a position in DAWN in Q2 2024 and has held it in 6 quarters since. 206 funds tracked by Wall St. Rank hold DAWN as of Q1 2026.

  • Mariner held 52,342 shares of Day One Biopharmaceuticals worth $1.12M as of Q1 2026.
  • Mariner bought 21,175 Day One Biopharmaceuticals shares in Q1 2026, an estimated $298K.
  • Day One Biopharmaceuticals made up ﹤0.01% of Mariner's portfolio in Q1 2026, its #1887 holding.
  • Mariner first reported a position in Day One Biopharmaceuticals in Q2 2024 and has held it in 6 quarters since.
  • 206 funds tracked by Wall St. Rank held Day One Biopharmaceuticals as of Q1 2026.

Based on Mariner's 13F filing for Q1 2026, filed 13 May 2026.