Stock Buyers Drive Biggest S&P 500 Rally Since May: Markets Wrap

Wall Street traders lifted stocks as the US and China signaled willingness to keep trade negotiations alive, Middle East tensions cooled while the artificial-intelligence rally powered ahead.

Following its worst rout in six months, the S&P 500jumped 1.6% to extend a bull market that’s already added $28 trillion to its value. The benchmark saw its best session since May. A key gauge of chipmakers surged nearly 5%. Broadcom Inc. soared about 10% as OpenAI agreed to buy its custom chips and networking equipment in a multiyear agreement.

Trump urges leaders to seize momentum for Gaza peace.

Photographer: Suzanne Plunkett/Pool/Getty Images

With trade jitters easing and investors brushing aside fears of a ...