Nvidia Corp., the world’s biggest chipmaker, has discussed joining a funding round for OpenAI that would value the artificial intelligence startup at more than $100 billion, according to people familiar with the matter.

Reddit Inc. shares soared 48% above their initial public offering price, as investors embraced the social media company’s vision of profiting from the growth of artificial intelligence.

Brex, a credit-card startup, has seen a surge in usage of its products following this year’s regional banking turmoil.

Some of the big-name startups expected to go public early this year have slowed their rush to market as stocks continue to whipsaw. Companies including Reddit Inc. and Cohesity Inc. each discussed listing shares as soon as the first quarter of 2022, people familiar with the matter have said. Though both have filed paperwork for an initial public offering, neither has taken the next steps toward making their market debuts.