🔴 Ideaya Biosciences is trading 4.06% down today amid a biotech-sector decline

Ideaya Biosciences is trading at $34.66, down 4.06% on October 23, 2026, amid biotech-sector pressure.

• The XBI fell 2.08% during the regular session alongside broader market weakness; the sector-wide decline is the clearest context for Ideaya Biosciences’ drop.
• At ESMO, the company announced updated Phase 1 IDE849 results, including 17.4 months median overall survival in second-line small-cell lung cancer.
• Available reports describe the data as encouraging, not a negative company catalyst.