英伟达暴跌，市值蒸发8000亿刀

Core Viewpoint - Nvidia's stock has experienced a significant decline, losing over 16% in just four trading days, resulting in a market cap drop of approximately $800 billion, raising concerns about the sustainability of the AI-driven tech stock rally [2][3][4] Group 1: Stock Performance and Market Reaction - Nvidia's market cap plummeted from nearly $5 trillion to about $4.47 trillion, losing around $530 billion in a matter of days, marking one of the largest market cap reductions in U.S. corporate history [2][5] - The stock's decline is attributed to valuation pressures and profit-taking after its market cap exceeded $3 trillion, indicating a market entering a "perfect pricing" phase where even minor concerns trigger significant sell-offs [4][5] - Despite the drop, Nvidia remains the third-highest company by market cap globally, following Apple and Microsoft [3][5] Group 2: Impact of U.S. Export Restrictions - U.S. government restrictions on semiconductor exports have raised concerns about Nvidia's short-term growth prospects, particularly affecting its high-end chips like the H100 and the upcoming Blackwell series [3][7] - Analysts estimate that the inability to sell advanced AI chips in China could lead to a quarterly revenue loss of around $8 billion, as China historically accounted for about 12.5% of Nvidia's total revenue and 20-25% of its data center revenue [7][8] Group 3: Economic and Market Sentiment - The macroeconomic environment, including rising interest rates and signs of economic slowdown, is pressuring Nvidia's stock price, as high-growth stocks become less attractive [8][9] - Market sentiment has shifted from enthusiasm to caution regarding AI stocks, with traders reassessing Nvidia's potential for sustained exponential growth in the short term [6][8] Group 4: Technical Analysis and Future Outlook - Nvidia's stock has breached key support levels, raising warnings for short-term traders, although analysts maintain a long-term optimistic outlook due to strong demand for AI infrastructure [10][11] - Upcoming earnings reports and product launches are critical for determining whether the recent decline is a temporary setback or indicative of a larger trend [12]