The S&P 500 closed at 7,800 for the first time in history, rising 0.58%, while the Nasdaq gained 0.45%. The Dow climbed 0.49%. The rally centred on AI chipmakers and followed a dip in US Treasury yields.

The Guardian reports that investors maintained optimism despite signs of instability in the broader US economy. The Nasdaq, which tilts heavily toward technology stocks, outpaced traditional market indices. The Dow remains slightly below its August record high.