Marketmind: Stocks hold records with Powell in view, Nikkei tops 40k

Record tech-led U.S. and world stock indexes, a recoil in Treasury bond yields and the prospect of fresh Chinese stimulus make for a potent cocktail heading into this week’s key testimony from Federal Reserve boss Jerome Powell. Chip-testing equipment maker Advantest, which counts AI darling Nvidia among its customers, was up 3.7% and chip-making equipment giant Tokyo Electron gained another 2.4%. Dell Technologies surged 31.62%, its biggest daily percentage gain ever, after the personal computer maker forecast annual revenue and profit above Wall Street estimates.