IDYA · smart money activity

Who's buying IDEAYA Biosciences, Inc.?

Deerfield Management: added +77% to 2.71M sh (~$101.2M, 1.1% of book); RTW Investments: new position: 370.4K sh (~$13.8M, 0.1% of book); Baker Bros. Advisors: added +27% to 5.01M sh (~$186.7M, 0.9% of book).

Smart money score75#20 of 372 stocks

Latest filingAug 14, 2026

Independent buyers3

Signal sources13F

Signals against0

IDYA insider buying, 13F and 13D filings

Aug 14, 202613F add

Deerfield Management: Added +77% to 2.71M sh (~$101.2M, 1.1% of book)

13F for the quarter ended 2026-06-30. Filed 2026-08-14.
View the filing on SEC EDGAR ↗
Aug 14, 2026New 13F stake

RTW Investments: New position: 370.4K sh (~$13.8M, 0.1% of book)

13F for the quarter ended 2026-06-30. Filed 2026-08-14.
View the filing on SEC EDGAR ↗

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Signals come from SEC filings: Form 4 (insiders, filed within 2 business days), 13F (fund holdings, up to 45 days after quarter end) and Schedule 13D (5%+ activist stakes). This page reports what the filings show; it is not investment advice.