Traders work on the floor at the New York Stock Exchange (NYSE) in New York City, U.S., October 27, 2023.
The S&P 500 information technology sub-index (.SPLRCT), up 1.6%, was the top gainer among the S&P 500's 11 major sectors, getting its biggest boost from Microsoft's shares (MSFT.O) which touched a record high and were last up 2%.
Microsoft will also take on Greg Brockman, another OpenAI cofounder, as well as other researchers.
The benchmark S&P 500 (.SPX) was also closing back in on its year-to-date high reached in July, just a little over 1% below the milestone.
The S&P 500 posted 25 new 52-week highs and one new low; the Nasdaq Composite recorded 70 new highs and 78 new lows.
Brendan McDermid, Bristol Myers, Satya Nadella, Sam Altman, Greg Brockman, Bruce Zaro, Germany's Bayer, decliners, Sinéad Carew, Amruta, Maju Samuel, Pooja Desai, Richard Chang
New York Stock Exchange, REUTERS, Microsoft, Bristol, Dow, Nasdaq, Apple, Nvidia, Investors, Granite Wealth Management, Dow Jones, Federal, Traders, Graphics, Bristol Myers Squibb, Sunday, Boeing, Deutsche Bank, NYSE, Thomson
New York City, U.S, Providence , Rhode Island, Thursday's U.S, New York