Shares of Microsoft surged more than 15 percent, lifting all three major US indices (Martin LELIEVRE)Wall Street stocks rebounded Thursday as blowout Microsoft results and moderating oil prices blunted worries about higher US Treasury yields. Shares of Microsoft surged more than 15 percent following strong results driven by its cloud and artificial intelligence divisions. "A good deal of enthusiasm for Microsoft and tech is helping the tape," said Art Hogan of B. Riley Wealth Management. The Microsoft results came at the end of a difficult July for tech companies after Nasdaq's huge second-quarter gains. Major tech companies in the US have been spending billions to build out AI infrastructure and develop increasingly more advanced AI models.