Shares of banks and other financial institutions rose slightly as optimism about regional bank earnings offset concerns about investment banking and private-credit funds.

Goldman Sachs Group and Morgan Stanley slumped after reports that OpenAI may delay its multibillion-dollar initial public offering until 2027.

Two senators, John Curtis (R., Utah) and Adam Schiff (D., Calif.), are calling for a federal investigation into Polymarket's social-media promotion of fake bets following The Wall Street Journal's reporting on the prediction market's deceptive marketing practices.

Write to Rob Curran at rob.curran@dowjones.com

(END) Dow Jones Newswires