NEW YORK Microsoft surged above $4 trillion in market value early July 31 following strong earnings, as investor bullishness for artificial intelligence lifted major indices further into record territory. Shares of Microsoft vaulted 5.3 percent after it reported $27.2 billion in quarterly profits as it touted massive investments in AI . Microsoft became the second company to surpass $4 trillion following another AI star, Nvidia . About 25 minutes into trading, the tech-rich Nasdaq Composite