In This Story MSFT +2.91% NVDA +8.93% AAPL +3.65% META +2.19% Microsoft ( MSFT +2.91% ) and OpenAI are investigating whether a group connected to the Chinese AI startup DeepSeek accessed OpenAI’s data without permission, according to a new report. Suggested Reading 23andMe might sell itself as it runs out of money U.S. consumer confidence falls for second consecutive month DeepSeek’s surge reveals Nvidia's vulnerability DeepSeek is a wakeup call for AI companies like Nvidia, strategist says CC