Check out the companies making the biggest moves midday: Revolution Medicines — The biotech stock rallied 13% on the release of positive trial data for daraxonrasib, a drug aimed at treating pancreatic cancer. The company plans to begin a phase 3 trial in the fourth quarter based on the latest findings. Delta Air Lines — The airline fell more than 3% after the company reiterated its third-quarter earnings per share guidance. Delta sees a profit between $1.25 per share and $1.75 per share. Micron Technology — Shares of the semiconductor manufacturer jumped more than 9% after Citi reiterated its buy rating on the company while also hiking its price target on the stock. The firm said it expects better-than-expected demand from the data center end market to help drive "decent results and well

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