Wall Street's main indexes rose on Tuesday in a truncated trading session before Christmas, with the S&P 500 and the Nasdaq up for the third consecutive day, helped by gains in a handful of megacap and growth stocks.

Stocks are broadly higher in trading on Wall Street, led by gains in Big Tech stocks. The S&P 500 was up 0.7% Tuesday.

One stock that's benefited immensely from the AI revolution is SoundHound AI (NASDAQ: SOUN). Enterprise customers license its technology to support their voice-activated AI agents, which are like chatbots that can behave autonomously in a specific environment.

Stocks shook off a choppy start to finish higher Monday, as Wall Street kicked off a holiday-shortened week. The S&P 500 ended 0.7% higher after having been down 0.5% in the early going. The Dow Jones Industrial Average also recovered from an early slide to eke out a 0.

U.S. stock indexes edged higher in morning trading Tuesday, as gains for some Big Tech stocks made up for weakness elsewhere in the market. The S&P 500 rose 0.4%. The Dow Jones Industrial Average was up 14 points,