Shares of SoftBank Group plunged as much as 10% Wednesday after the Japanese giant said it had sold its entire stake in U.S. chip giant Nvidia for $5.83 billion. The capital will be used to fund SoftBank's $22.5 billion investment in ChatGPT parent OpenAI, a person familiar with the matter told CNBC. Shares of SoftBank Group last traded more than 6% lower. In its earnings report, SoftBank said it sold 32.1 million Nvidia shares in October. It also trimmed its T-Mobile position, raising $9.17