Today's biggest winners and losers in the stock market.

On this episode of Stock Movers:

-Grail (GRAL) (after hours) stock plunged 30% postmarket after the early cancer detection test maker said Galleri, its multi-cancer screener, failed to meet its primary endpoint of statistically significant reduction in combined Stage III and IV cancer. The firm also reported earnings.

-Deere (DE) shares climbed the most in six years as the world’s largest farm-machinery maker boosted its annual profit outlook, anticipating a long-awaited upturn in the agriculture economy. 

-Herbalife (HLF) stocks jumped after Cristiano Ronaldo, football’s first billionaire, announced he is putting a small part of his personal fortune into a new health and wellness tracking service owned by Herbalife.