McKesson is trading at $927.60, up +4.89%, with no verified news catalyst identified for the pre-market gain.

  • McKesson is rising despite broad markets trading lower: the S&P 500 is down 0.53% and Nasdaq is down 0.98%.
  • The company disclosed a cybersecurity incident involving unauthorized access and data exfiltration; its investigation remains ongoing.
  • McKesson has not deemed the incident material.