日股跳水，日经225指数跌2%，软银一度跌近9%

Market Overview - Japanese and Korean stock markets opened lower, with the Nikkei 225 index falling below 50,000 points and a decline of 2% [1] - Hitachi Zosen led the decline with an 18.4% drop, followed by Ajinomoto with a 16.17% decrease, and SoftBank Group down nearly 9% [2] Company Performance - Hitachi Zosen: Current price 936.0d, down 211.0, -18.40% [2] - Ajinomoto: Current price 3624.0d, down 699.0, -16.17% [2] - SoftBank Group: Current price 21250.0d, down 2050.0, -8.80% [2] - SK Hynix: Current price 592000d, down 0.17% [3] - Samsung Electronics: Current price 99400d, up 0.20% [3] US Market Trends - US tech stocks collectively fell, with Nvidia losing over 3% and a market cap drop of $173.3 billion [4] - Concerns about a potential bubble burst are rising, with Michael Burry indicating a strategy to short the AI bubble [4] - Goldman Sachs and Morgan Stanley predict a 10% to 20% correction in global (US) stock markets within the next 1-2 years due to tech stock bubbles, while remaining optimistic about the Chinese market, particularly in AI, electric vehicles, and biotechnology [4] Investment Sentiment - Concerns about panic selling in the market are noted, likely starting from overvalued sectors [4] - Despite high valuations in the AI sector, there is still support from potential Fed rate cuts and corporate earnings [5]