Ideaya Biosciences is trading at $34.51, down 4.31%, during the October 13 session; no clear company-specific announcement explaining the decline surfaced in available search results.

  • The company’s investor-relations news page lists releases through September 28.
  • Broader biotech weakness may be contributing: supplied sector context shows XBI down 2.01% during the regular session, and a contemporaneous report describes a longer-running biotech pullback. The sector decline is context, not a confirmed direct cause of the larger move.