S&P 500 Hits Record High on AI Buying Frenzy

The S&P 500 closed 0.58 percent higher on Tuesday, setting an all-time record as excitement over artificial intelligence drove a Wall Street buying spree. The Nasdaq Composite also hit a record, with Amazon, Microsoft and Tesla among the top performers. The benchmark index is up 14 percent in 2026 despite elevated oil prices and a US government debt sell-off.