US stocks: S&P 500 hits record high on strong AI-linked earnings, Mideast deal hopes

Wall Street's S&P 500 index reached a new intraday record high on Tuesday. Upbeat artificial intelligence forecasts from Caterpillar and Palantir boosted market sentiment. Hopes for an imminent Middle East peace deal also helped. Many investors got reassurance from strong earnings by Amazon and Microsoft, pushing the Dow Jones higher too.