AI Is Now Carrying Wall Street's Profit Growth, and a 5% Treasury Yield Is Testing How Much It Can Hold

Stocks are near record highs with the 10-year Treasury yield above 5%, and one source of profit explains it. AI is expected to supply roughly two-thirds of the S&P 500's 30% earnings growth this quarter, with semiconductor profits projected up 136%. That support comes with a higher bar, and the first real test lands Thursday when Taiwan Semiconductor reports.