Apple warned that future supply constraints could affect some of its best-known products, including the Mac, iPhone and iPad, raising concerns about sales in the months ahead. The company said the impact could be significant, a message that quickly unsettled investors.

The warning sent Apple shares lower after the update, as Wall Street reacted to the prospect of weaker near-term performance. Investors appeared focused on the possibility that product availability could limit sales even if customer demand remains strong.

The company’s comments point to ongoing pressure in the supply chain, with Apple signaling that shortages or production bottlenecks may weigh on results. Because the Mac, iPhone and iPad are central to Apple’s business, any disruption tied to those devices is likely to attract close scrutiny from markets.

Apple’s update adds to broader concerns about how supply problems can ripple through major technology companies. For now, the focus is on how long the constraints last and how much they may slow Apple’s sales momentum in the coming quarters.