KEY POINTS
  • Starbucks warned that the Wuhan coronavirus could "materially affect" its fiscal 2020 results.
  • The coffee chain has closed all cafes and halted delivery for locations in the Hubei province, where the virus originated.
  • Starbucks reported fiscal first-quarter earnings that topped analysts' estimates.
Starbucks President and Chief Executive Officer Kevin Johnson is pictured at the Annual Meeting of Shareholders in Seattle, Washington on March 20, 2019.

Starbucks on Tuesday reported quarterly earnings that beat analysts' expectations, but investors focused on its warning that the Wuhan coronavirus outbreak could deal a blow to its fiscal 2020 outlook.

Shares of the company fell less than 1% in extended trading.