GLOBAL MARKETS-Stocks Tumble with Meta, Microsoft; Dollar Dips after US Data

GLOBAL MARKET - NEW YORK. World stock indexes dropped on Thursday, with the Nasdaq ending more than 2% lower after Meta Platforms and Microsoft warned of rising costs for artificial intelligence, while the dollar weakened slightly after U.S. data did little to suggest a change to Federal Reserve policy.

The earnings reports added to concerns among investors that the pay-off for heavy spending on AI may take longer than many had hoped.