Wall Street's main indexes opened flat to slightly higher in Tuesday's shortened trading session, with U.S. stocks entering a historically strong period before rounding off their second consecutive year of gains.

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.

The S&P 500 posted two new 52-week highs and one new low, while the Nasdaq Composite recorded 26 new highs and 43 new lows.

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.

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.

Wall Street's main indexes all ended higher on Tuesday, with gains in megacap and growth stocks bolstering benchmarks in a truncated Christmas Eve session. Both the Dow Jones Industrial Average and the Nasdaq Composite scored four straight sessions of gains.

Stock indexes are drifting in the early going on Wall Street as gains for some Big Tech stocks make up for weakness elsewhere in the market. The S&P 500 edged