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IDYA · IDEAYA Biosciences, Inc.

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$39.86 -0.11 (-0.28%) At close · Sep 4
Market Cap
$3.88B
Shares
96.49M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 288
Total Value: $3,835,134,664
Total Shares: 102,951,418
Showing 1–100 of 295 holdings by value · page 1 of 3

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 288 13F filers · Δ vs Mar 31, 2026
Top Holder
13.7%
Sep 2023 → Jun 2026 · range 8.2% – 14.1%
+0.1 pts
Top 5
40.8%
Sep 2023 → Jun 2026 · range 30.1% – 41.4%
+1.6 pts
Top 10
57.4%
Sep 2023 → Jun 2026 · range 49.3% – 61.9%
+1.0 pts
HHI
481
Sep 2023 → Jun 2026 · range 334 – 512
Broadly held+14

Quarterly Activity

vs Mar 31, 2026
New
66
Increased
93
Decreased
90
Sold Out
35
Unchanged
39
Holder count: +31
Institutional value: +18.6%
Shares held: +6.1%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 100 of 295
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 1676725 CUSIP 45166A102 13F (30d) 221 filings 218 filers Visit website Investor relations