Apple Warns of Supply Chain Woes While Amazon Faces Increased Labor Costs

Apple Inc. and Amazon.com Inc. reported quarterly results that showed how supply-chain problems and tight labor markets are tripping up even some of the biggest business winners of the pandemic era.

Apple, which had record 12-month profit nearing $100 billion, warned that supply-chain disruptions are hindering iPhone and other product manufacturing and would bring increased challenges during the important holiday-shopping quarter.