IDEAYA Biosciences, Inc.
US ˙ NasdaqGS ˙ US45166A1025

SecurityIDYA / IDEAYA Biosciences, Inc.
InstitutionTd Asset Management Inc
Latest Disclosed Ownership43,670 shares
Latest Disclosed Value $ 1,455,084
Td Asset Management Inc reports 5.15% decrease in ownership of IDYA / IDEAYA Biosciences, Inc.

On May 11, 2026 - Td Asset Management Inc filed a 13F-HR form disclosing ownership of 43,670 shares of IDEAYA Biosciences, Inc. (US:IDYA) valued at $1,455,084 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 46,040 shares of IDEAYA Biosciences, Inc.. This represents a change in shares of -5.15% during the quarter. The current value of the position is $1,235,424 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.

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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)
2026-05-11 2026-03-31 13F IDEAYA BIOSCIENCES COM 45166A102 43,670 -2,370 -5.15 1,455 -8.55 0.0012
2026-02-10 2025-12-31 13F IDEAYA BIOSCIENCES COM 45166A102 46,040 19,600 74.13 1,592 121.28 0.0013
2025-11-10 2025-09-30 13F IDEAYA BIOSCIENCES COM 45166A102 26,440 -8,596 -24.53 719 -2.31 0.0006
2025-07-28 2025-06-30 13F IDEAYA BIOSCIENCES COM 45166A102 35,036 0 0.00 736 28.45 0.0006
2025-05-07 2025-03-31 13F IDEAYA BIOSCIENCES COM 45166A102 35,036 -30,254 -46.34 574 -65.83 0.0005
2025-02-11 2024-12-31 13F IDEAYA BIOSCIENCES COM 45166A102 65,290 -16,800 -20.47 1,678 -33.66 0.0015
2024-11-01 2024-09-30 13F IDEAYA BIOSCIENCES COM 45166A102 82,090 -34,600 -29.65 2,528 -38.28 0.0022
2024-08-02 2024-06-30 13F IDEAYA BIOSCIENCES COM 45166A102 116,690 -65,200 -35.85 4,097 -48.68 0.0038
2024-05-08 2024-03-31 13F IDEAYA BIOSCIENCES COM 45166A102 181,890 44,200 32.10 7,981 62.91 0.0074
2024-02-12 2023-12-31 13F IDEAYA BIOSCIENCES COM 45166A102 137,690 24,034 21.15 4,899 59.78 0.0048
2023-10-27 2023-09-30 13F IDEAYA BIOSCIENCES COM 45166A102 113,656 76,528 206.12 3,066 251.61 0.0037
2023-08-09 2023-06-30 13F IDEAYA BIOSCIENCES COM 45166A102 37,128 37,128 873 0.0010
2023-05-10 2023-03-31 13F IDEAYA BIOSCIENCES COM 45166A102 0 -14,502 -100.00 0 -100.00
2023-02-07 2022-12-31 13F IDEAYA BIOSCIENCES COM 45166A102 14,502 0 0.00 264 28.29 0.0003
2022-11-07 2022-09-30 13F IDEAYA BIOSCIENCES COM 45166A102 14,502 0 0.00 205 2.50 0.0003
2022-08-04 2022-06-30 13F IDEAYA BIOSCIENCES COM 45166A102 14,502 -20,400 -58.45 200 -48.85 0.0002
2022-05-10 2022-03-31 13F IDEAYA BIOSCIENCES COM 45166A102 34,902 -40,400 -53.65 391 -78.03 0.0002
2022-02-10 2021-12-31 13F IDEAYA BIOSCIENCES COM 45166A102 75,302 8,700 13.06 1,780 4.83 0.0015
2021-11-09 2021-09-30 13F IDEAYA BIOSCIENCES COM 45166A102 66,602 8,800 15.22 1,698 19.92 0.0018
2021-08-11 2021-06-30 13F IDEAYA BIOSCIENCES COM 45166A102 57,802 19,897 52.49 1,416 58.92 0.0014
2021-05-14 2021-03-31 13F IDEAYA BIOSCIENCES COM 45166A102 37,905 14,405 61.30 891 170.82 0.0010
2021-02-16 2020-12-31 13F IDEAYA BIOSCIENCES COM 45166A102 23,500 23,500 329 0.0004
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.