Today's biggest winners and losers in the stock market.

On this episode of Stock Movers:

- Nvidia (NVDA) shares are moving on a report from the Wall Street Journal that Nvidia is in talks to provide a roughly $250 billion backstop for OpenAI as part of a massive data center project. The guarantees from Nvidia would help the ChatGPT maker lease a 10-gigawatt project that SoftBank is developing in southern Ohio.

- Forte Bioscience (FBRX) is soaring as Argenx SE agreed to buy Forte Biosciences Inc. for about $2.2 billion in cash to expand its portfolio of immunology medicines.

- AT&T (T) is moving on news it has opened books on a at least €2 billion euro and sterling bond offering.

- Trip.com Group (TCOM) shares are responding to news it received an administrative penalty decision from China’s State Administration for Market Regulation, ordering the company to halt antitrust violations, refund hotel operators and pay a fine of 3.52 billion yuan ($520 million), according to a Hong Kong exchange filing.