Japanese and South Korean tech stocks plummeted on Friday, with tech investor SoftBank plunging more than 10% as fears over an AI bubble weighed on the market. https://www.japantimes.co.jp/business/2025/11/21/markets/tech-stocks-ai-fear/?utm_medium=Social&utm_source=mastodon #business #markets #ai #southkorea #tech #softbank #us #nvidia #openai #chipmakers