Wall Street ends higher as Amazon soothes AI jitters ReutersS&P 500 closes higher Friday as Amazon surges; Dow posts fourth straight winning month: Live updates CNBCStock market today: Dow, S&P 500, Nasdaq rise to cap volatile July as Big Tech AI spending ramps up Yahoo FinanceAmazon and Apple Deliver the Drama to Close a Turbulent Month WSJUS stocks rise to finish a wild July as Amazon soars, Apple sinks and inflation worries worsen AP News