In This Story NVDA -4.04% MSFT -5.36% META -3.85% AMD -2.43% MU -4.23% Despite posting robust quarterly profits, Microsoft ( MSFT -5.36% ) and Meta ( META -3.85% ) shares slumped Thursday as both tech giants signaled substantial future AI spending requirements and slower growth prospects. The companies that have emerged as leaders in the AI sector saw their stocks decline despite heavy investments in generative AI that had previously fueled investor optimism. Suggested Reading Allegiant Air