US stock market hits all-time high as investors bet big on AI

The benchmark S&P 500 is up 14 percent this year despite elevated oil prices and US government debt sell-off.

The United States stock market has hit an all-time high as excitement around artificial intelligence continues to fuel a buying frenzy on Wall Street.

The S&P 500, the benchmark stock index, closed 0.58 percent higher on Tuesday, topping the previous pea...