Stock Market Movers: 10 Biggest Gainers and Losers – 19 October 2026

2. IBRX: ImmunityBio (IBRX) declines 8.28% on profit-taking on last week’s return to the $10 level.

1. ALM: Almonty Industries (ALM) declines 10.17% as investors resume selling positions amid Oppenheimer’s 24% price target cut.

Monday’s 10 Highest Gainers

10. CELH: Celsius Holdings (CELH) extends winning streak to 3rd day, up 5.43% on broader market optimism, portfolio positioning ahead of Q3 earnings.

9. SNDK: SanDisk Corp. (SNDK) up 5.53% on bargain-hunting after 7 straight days of declines.