Simplex Trading’s Day One Biopharmaceuticals DAWN Stock Holding History

Simplex Trading’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	$1.38M	Buy	+64,464	New	+$908K	﹤0.01%	2162
2025 Q2	–	Sell	-1,665	Closed	-$11.5K	–	8834
2025 Q1	$13K	Buy	+1,665	New	+$17.9K	﹤0.01%	6895
2024 Q4	–	Sell	-7,240	Closed	-$101K	–	8696
2024 Q3	$100K	Sell	7,240 -10,185	-58%	-$145K	﹤0.01%	5230
2024 Q2	$240K	Buy	17,425 +14,667	+532%	+$215K	﹤0.01%	4483
2024 Q1	$45K	Buy	+2,758	New	+$41.3K	﹤0.01%	6353
2023 Q3	–	Sell	-107	Closed	-$1.4K	–	8851
2023 Q2	$1K	Sell	107 -6,306	-98%	-$82.4K	﹤0.01%	8595
2023 Q1	$85K	Buy	+6,413	New	+$125K	﹤0.01%	5328
2022 Q3	–	Sell	-132,926	Closed	-$2.83M	–	10061
2022 Q2	$2.38M	Buy	+132,926	New	+$1.37M	﹤0.01%	1693

Other funds holding DAWN

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 Hamilton, Bermuda $129B AUM 30.83% 1-Year Est. Return

Kryger Capital London, United Kingdom $1.41B AUM 86.31% 1-Year Est. Return

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 New York $1.56T AUM 27.86% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Balyasny Asset Management Chicago, Illinois $77.1B AUM 42.89% 1-Year Est. Return

AQR Arbitrage Greenwich, Connecticut $6.09B AUM 27.01% 1-Year Est. Return

Simplex Trading's DAWN Position: Q1 2026 in Review

Simplex Trading opened a new position in Day One Biopharmaceuticals (DAWN) in Q1 2026: 64,464 shares worth $1.38M. The stake represents ﹤0.01% of the portfolio and ranks #2162 among its holdings. This is a return to the name: Simplex Trading previously reported a position in DAWN as recently as Q1 2025.

Simplex Trading first reported a position in DAWN in Q2 2022 and has held it in 8 quarters since. The position peaked at $2.38M in Q2 2022. 206 funds tracked by Wall St. Rank hold DAWN as of Q1 2026.

Simplex Trading held 64,464 shares of Day One Biopharmaceuticals worth $1.38M as of Q1 2026.
Day One Biopharmaceuticals was a new Simplex Trading position in Q1 2026.
Day One Biopharmaceuticals made up ﹤0.01% of Simplex Trading's portfolio in Q1 2026, its #2162 holding.
Simplex Trading first reported a position in Day One Biopharmaceuticals in Q2 2022 and has held it in 8 quarters since.
Simplex Trading's Day One Biopharmaceuticals position peaked at $2.38M in Q2 2022.
206 funds tracked by Wall St. Rank held Day One Biopharmaceuticals as of Q1 2026.

Based on Simplex Trading's 13F filing for Q1 2026, filed 14 May 2026.