Trading on Wall Street mixed early; chip stocks lifted by OpenAI deal with South Korean tech firms

Trading on Wall Street was mixed early Thursday despite a shutdown of the U.S. government that threatened to drag on indefinitely.

Futures for S&P 500 were up 0.2% before the bell, while futures for the Dow Jones Industrial Average ticked down 0.1%. Futures for the Nasdaq, home to most of the biggest U.S. technology companies, jumped 0.5% on news of a partnership between South Korean tech firms and OpenAI that's expected to boost demand for computer chips.