Day One Biopharmaceuticals, Inc.
US ˙ NasdaqGS ˙ US23954D1090
DETTE SYMBOL ER IKKE LÆNGERE AKTIVT

SecurityDAWN / Day One Biopharmaceuticals, Inc.
InstitutionFranklin Resources Inc
Latest Disclosed Ownership52,623 shares
Latest Disclosed Value $ 1,128,237
Franklin Resources Inc reports 0.20% decrease in ownership of DAWN / Day One Biopharmaceuticals, Inc.

On May 13, 2026 - Franklin Resources Inc filed a 13F-HR form disclosing ownership of 52,623 shares of Day One Biopharmaceuticals, Inc. (US:DAWN) valued at $1,128,237 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 52,726 shares of Day One Biopharmaceuticals, Inc.. This represents a change in shares of -0.20% during the quarter. The current value of the position is $1,132,973 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

Upgrade to unlock premium data and export to Excel .

Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-13 2026-03-31 13F DAY ONE BIOPHARMACEUTICALS I COM 23954D109 52,623 -103 -0.20 1,128 129.74 0.0000
2026-02-11 2025-12-31 13F DAY ONE BIOPHARMACEUTICALS I COM 23954D109 52,726 -3,424,300 -98.48 491 -98.00 0.0001
2025-11-13 2025-09-30 13F DAY ONE BIOPHARMACEUTICALS I COM 23954D109 3,477,026 -620,599 -15.15 24,513 -7.96 0.0061
2025-08-12 2025-06-30 13F DAY ONE BIOPHARMACEUTICALS I COM 23954D109 4,097,625 79,255 1.97 26,635 -16.42 0.0071
2025-05-13 2025-03-31 13F DAY ONE BIOPHARMACEUTICALS I COM 23954D109 4,018,370 135,418 3.49 31,866 -35.23 0.0092
2025-02-12 2024-12-31 13F DAY ONE BIOPHARMACEUTICALS I COM 23954D109 3,882,952 13,320 0.34 49,197 -11.09 0.0137
2024-11-27 2024-09-30 13F/A-1 DAY ONE BIOPHARMACEUTICALS I COM 23954D109 3,869,632 87,262 2.31 55,336 6.17 0.0155
2024-11-12 2024-09-30 13F DAY ONE BIOPHARMACEUTICALS I COM 23954D109 3,869,632 87,262 55,336 0.0027
2024-08-14 2024-06-30 13F DAY ONE BIOPHARMACEUTICALS I COM 23954D109 3,782,370 -24,420 -0.64 52,121 -17.12 0.0160
2024-05-13 2024-03-31 13F DAY ONE BIOPHARMACEUTICALS I COM 23954D109 3,806,790 -430,005 -10.15 62,888 1.67 0.0199
2024-02-09 2023-12-31 13F DAY ONE BIOPHARMACEUTICALS I COM 23954D109 4,236,795 169,463 4.17 61,857 23.95 0.0289
2023-11-13 2023-09-30 13F DAY ONE BIOPHARMACEUTICALS I COM 23954D109 4,067,332 1,664 0.04 49,906 2.81 0.0254
2023-08-11 2023-06-30 13F DAY ONE BIOPHARMACEUTICALS I COM 23954D109 4,065,668 658,797 19.34 48,544 6.58 0.0231
2023-05-12 2023-03-31 13F DAY ONE BIOPHARMACEUTICALS I COM 23954D109 3,406,871 934,022 37.77 45,550 -14.41 0.0229
2023-02-10 2022-12-31 13F DAY ONE BIOPHARMACEUTICALS I COM 23954D109 2,472,849 -3,857 -0.16 53,216 7.27 0.0277
2022-11-14 2022-09-30 13F DAY ONE BIOPHARMACEUTICALS I COM 23954D109 2,476,706 11,326 0.46 49,608 12.41 0.0270
2022-08-11 2022-06-30 13F DAY ONE BIOPHARMACEUTICALS I COM 23954D109 2,465,380 922,521 59.79 44,130 188.34 0.0219
2022-05-13 2022-03-31 13F DAY ONE BIOPHARMACEUTICALS I COM 23954D109 1,542,859 581,633 60.51 15,305 -5.51 0.0061
2022-02-11 2021-12-31 13F DAY ONE BIOPHARMACEUTICALS I COM 23954D109 961,226 370,699 62.77 16,197 15.59 0.0058
2021-11-12 2021-09-30 13F DAY ONE BIOPHARMACEUTICALS I COM 23954D109 590,527 71,561 13.79 14,013 18.58 0.0053
2021-08-13 2021-06-30 13F DAY ONE BIOPHARMACEUTICALS I COM 23954D109 518,966 518,966 11,817 0.0045
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.