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Day One Biopharmaceuticals, Inc.

DAWNDelisted Apr 23, 2026
Industry
Pharmaceutical Preparations
SEC CIK
0001845337

Day One Biopharmaceuticals, Inc. was delisted on Apr 23, 2026; its insiders filed their last Form 4 on Apr 27, 2026; 208 institutions reported holding it in 13F filings for Q1 2026, worth $1.85B in total; Soros Fund Management was the only superinvestor holding it.

13F holders, Q3 2022

Institutional positions in Day One Biopharmaceuticals, Inc. as of Sep 30, 2022. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
93
+7 vs. Q2 2022
Shares held
60.8M
+1.39M (+2.3%) vs. Q2 2022
Total value
$1.21B
+$149.0M (+14.0%) vs. Q2 2022
New holders
24
36 more added
Sold out
17
18 more reduced

1 institution that held it in Q2 2022 haven't filed for Q3 2022 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q2 2022: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting DAWN on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ3 2022: 93 institutions
Q1 2021: 0 institutionsQ2 2021: 33 institutionsQ3 2021: 45 institutionsQ4 2021: 58 institutionsQ1 2022: 66 institutionsQ2 2022: 87 institutionsQ3 2022: 93 institutionsQ4 2022: 109 institutionsQ1 2023: 126 institutionsQ2 2023: 140 institutionsQ3 2023: 130 institutionsQ4 2023: 139 institutionsQ1 2024: 148 institutionsQ2 2024: 157 institutionsQ3 2024: 166 institutionsQ4 2024: 164 institutionsQ1 2025: 184 institutionsQ2 2025: 174 institutionsQ3 2025: 173 institutionsQ4 2025: 184 institutionsQ1 2026: 208 institutionsQ2 2026: 1 institution
Value heldQ3 2022: $1.21B
Q1 2021: $0Q2 2021: $401.1MQ3 2021: $452.9MQ4 2021: $698.3MQ1 2022: $429.6MQ2 2022: $1.06BQ3 2022: $1.21BQ4 2022: $1.29BQ1 2023: $818.1MQ2 2023: $941.0MQ3 2023: $951.5MQ4 2023: $1.12BQ1 2024: $1.20BQ2 2024: $1.03BQ3 2024: $1.28BQ4 2024: $1.19BQ1 2025: $747.1MQ2 2025: $561.1MQ3 2025: $603.5MQ4 2025: $758.4MQ1 2026: $1.85BQ2 2026: $3.55K
Institutions holding DAWN and their total value by quarter
QuarterHoldersValue
Q2 20261$3.55K
Q1 2026208$1.85B
Q4 2025184$758.4M
Q3 2025173$603.5M
Q2 2025174$561.1M
Q1 2025184$747.1M
Q4 2024164$1.19B
Q3 2024166$1.28B
Q2 2024157$1.03B
Q1 2024148$1.20B
Q4 2023139$1.12B
Q3 2023130$951.5M
Q2 2023140$941.0M
Q1 2023126$818.1M
Q4 2022109$1.29B
Q3 202293$1.21B
Q2 202287$1.06B
Q1 202266$429.6M
Q4 202158$698.3M
Q3 202145$452.9M
Q2 202133$401.1M
Q1 20210$0

Institutions, Q3 2022

Shares, value and share of portfolio for each institution holding Day One Biopharmaceuticals, Inc.; share changes are against Q2 2022.

Institutions holding DAWN in Q3 2022
InstitutionSharesValue% of portfolioChange in sharesAction
CWM, LLC3$00.00%00.0%Unchanged
Ellevest, Inc.23$00.00%+13+130.0%Added
Umb Bank N A3$00.00%+3New
Covestor Ltd6$00.00%+6New
Bellevue Asset Management, LLC62$1.00K0.00%+62New
Spire Wealth Management40$1.00K0.00%+40New
Crewe Advisors LLC80$2.00K0.00%00.0%Unchanged
Washington Trust Advisors, Inc.163$3.00K0.00%00.0%Unchanged
Credit Suisse AG157$3.00K0.00%+134+582.6%Added
Daiwa Securities Group Inc.181$4.00K0.00%00.0%Unchanged
China Universal Asset Management Co., Ltd.688$14.0K0.01%+688New
Capital Analysts, LLC750$15.0K0.00%00.0%Unchanged
Royal Bank of Canada1,507$30.0K0.00%+231+18.1%Added
Metropolitan Life Insurance Co1,825$36.6K0.00%00.0%Unchanged
FourThought Financial, LLC1,850$37.0K0.01%00.0%Unchanged
TCI Wealth Advisors, Inc.1,974$40.0K0.01%00.0%Unchanged
Ameritas Investment Partners, Inc.2,171$43.0K0.00%+407+23.1%Added
Tower Research Capital LLC (TRC)2,186$44.0K0.00%−1,564−41.7%Reduced
Legal & General Group Plc2,585$52.0K0.00%+561+27.7%Added
Amalgamated Bank3,577$72.0K0.00%+620+21.0%Added
Virtus ETF Advisers LLC6,601$132.0K0.05%+50+0.8%Added
SG Americas Securities, LLC9,620$193.0K0.00%+174+1.8%Added
California State Teachers Retirement System10,929$219.0K0.00%+944+9.5%Added
Deutsche Bank AG11,598$232.0K0.00%+554+5.0%Added
Mirae Asset Global Investments Co., Ltd.11,943$240.0K0.00%+11,943New
ExodusPoint Capital Management, LP12,903$258.0K0.00%−10,100−43.9%Reduced
American International Group, Inc.13,145$263.0K0.00%+2,216+20.3%Added
Bayesian Capital Management, LP13,508$271.0K0.05%+13,508New
State Board of Administration of Florida Retirement System13,760$276.0K0.00%00.0%Unchanged
Laurion Capital Management LP14,237$285.0K0.01%−763−5.1%Reduced
MetLife Investment Management15,573$311.9K0.00%00.0%Unchanged
Parkwood LLC18,475$370.0K0.08%+18,475New
Wells Fargo & Company20,979$420.0K0.00%+767+3.8%Added
UBS Group AG21,606$432.0K0.00%+17,755+461.0%Added
Schonfeld Strategic Advisors LLC23,387$468.0K0.00%−16,913−42.0%Reduced
Summit Rock Advisors, LP25,751$516.0K0.40%−7,374−22.3%Reduced
Voya Investment Management LLC27,898$558.8K0.00%+27,898New
Tudor Investment Corp Et Al36,544$732.0K0.02%+36,544New
UBS Oconnor LLC37,000$741.0K0.01%+37,000New
Alliancebernstein L.P.38,000$761.0K0.00%−4,400−10.4%Reduced
Prudential Financial Inc38,315$767.0K0.00%+38,315New
Alps Advisors Inc40,144$804.0K0.01%+3,414+9.3%Added
Rhumbline Advisers42,242$846.0K0.00%+8,288+24.4%Added
TD Asset Management Inc46,332$909.0K0.00%−10.0%Reduced
Fisher Asset Management, LLC45,526$912.0K0.00%+45,526New
Citadel Advisors LLC47,948$961.0K0.00%−11,856−19.8%Reduced
Susquehanna International Group, LLP49,368$989.0K0.00%+49,368New
Dimensional Fund Advisors LP51,408$1.03M0.00%+51,408New
New York State Common Retirement Fund51,790$1.04M0.00%+32,322+166.0%Added
Healthcare of Ontario Pension Plan Trust Fund54,000$1.08M0.01%+54,000New
Manufacturers Life Insurance Company, The57,457$1.13M0.00%−155−0.3%Reduced
Group One Trading, L.P.59,123$1.18M0.04%+59,123New
Great Point Partners LLC70,621$1.42M0.34%+70,621New
JPMorgan Chase & Co77,314$1.55M0.00%+60,799+368.1%Added
Barclays PLC90,429$1.81M0.00%+89,257+7,615.8%Added
Renaissance Technologies LLC97,900$1.96M0.00%−18,730−16.1%Reduced
Bank of New York Mellon Corp102,223$2.05M0.00%+38,681+60.9%Added
Morgan Stanley107,405$2.15M0.00%+70,365+190.0%Added
Macquarie Group Ltd110,000$2.20M0.00%00.0%Unchanged
Cubist Systematic Strategies, LLC125,586$2.52M0.02%+64,349+105.1%Added
Citigroup Inc131,746$2.64M0.00%+128,981+4,664.8%Added
Alyeska Investment Group, L.P.142,143$2.85M0.03%−75,000−34.5%Reduced
Rafferty Asset Management, LLC144,634$2.90M0.03%+144,634New
Nuveen Asset Management, LLC448,770$2.97M0.00%+376,218+518.5%Added
Bank of America Corp156,205$3.13M0.00%+126,498+425.8%Added
Samsara BioCapital, LLC196,425$3.93M0.92%00.0%Unchanged
Charles Schwab Investment Management Inc198,952$3.99M0.00%+45,909+30.0%Added
Voloridge Investment Management, LLC207,265$4.15M0.02%+207,265New
Parkman Healthcare Partners LLC212,191$4.25M1.21%+97,441+84.9%Added
Northern Trust Corp225,050$4.51M0.00%+34,540+18.1%Added
Tang Capital Management LLC400,000$8.01M0.98%+400,000New
Pathway Capital Management, LP403,127$8.07M25.88%+403,127New
Driehaus Capital Management LLC489,972$9.81M0.15%−11,717−2.3%Reduced
Lord, Abbett & Co. LLC504,251$10.1M0.04%+504,251New
Geode Capital Management, LLC554,630$11.1M0.00%+112,271+25.4%Added
D. E. Shaw & Co., Inc.567,148$11.4M0.02%+428,830+310.0%Added
Commodore Capital LP739,661$14.8M2.38%00.0%Unchanged
Nicholas Investment Partners, LP757,407$15.2M1.41%+757,407New
Deerfield Management Company, L.P. (Series C)1,032,000$20.7M0.41%−2,480,123−70.6%Reduced
Boxer Capital, LLC1,189,943$23.8M1.34%00.0%Unchanged
Polar Capital Holdings Plc1,235,575$24.7M0.20%+263,879+27.2%Added
Viking Global Investors LPSuperinvestorViking Global Investors1,558,563$31.2M0.14%−298,861−16.1%Reduced
Goldman Sachs Group Inc1,725,142$34.6M0.01%−169,395−8.9%Reduced
State Street Corp2,041,738$40.9M0.00%+1,682,955+469.1%Added
Price T Rowe Associates Inc2,094,913$42.0M0.01%+53,569+2.6%Added
Franklin Resources Inc2,476,706$49.6M0.03%+11,326+0.5%Added
BlackRock Inc.2,541,235$50.9M0.00%+578,511+29.5%Added
Vanguard Group Inc2,615,441$52.4M0.00%−11,033−0.4%Reduced
Adage Capital Partners GP, L.L.C.3,040,000$60.9M0.15%+293,175+10.7%Added
Canaan Partners XI LLC6,964,301$139.5M56.26%−2,699,344−27.9%Reduced
Ra Capital Management, L.P.7,040,622$141.0M3.01%00.0%Unchanged
Atlas Venture Life Science Advisors, LLC8,169,171$163.6M18.06%−799,134−8.9%Reduced
FMR LLC8,791,491$176.1M0.02%+1,964,917+28.8%Added
Perceptive Advisors LLC0$00.00%−556,047−100.0%Sold out
Woodline Partners LP0$00.00%−150,176−100.0%Sold out
Marshall Wace, LLP0$00.00%−145,898−100.0%Sold out
Simplex Trading, LLC0$00.00%−132,926−100.0%Sold out
Silverarc Capital Management, LLC0$00.00%−105,476−100.0%Sold out
Invesco Ltd.0$00.00%−97,024−100.0%Sold out
Maven Securities LTD0$00.00%−80,000−100.0%Sold out