第一财经·2025-10-30 03:36Core Viewpoint - The article discusses the increasing volatility in the U.S. stock market, particularly among large technology stocks, and highlights the role of derivatives in amplifying this volatility [3][4][7]. Group 1: Market Volatility - As of this year, there have been 119 instances of individual U.S. stocks experiencing a market cap change of over $100 billion in a single day, a record high compared to 84 instances last year and only 33 during the bear market of 2022 [4]. - Major tech stocks like Nvidia, Microsoft, and Apple have been responsible for some of the largest single-day market cap fluctuations, with Nvidia losing $592.7 billion on January 27 and gaining $441 billion on April 9 [4]. - The VIX index, which measures market volatility, has risen sharply in October, exceeding the average level of the past 20 years by nearly 5% [4]. Group 2: Derivatives Market Impact - The derivatives market is identified as a key driver of increased volatility, with retail investors and hedge funds making short-term bets on individual stocks, leading market makers to hedge their positions and further exacerbate price swings [7]. - In October, trading volume for single-stock options reached its highest level since the retail trading boom in 2021, with retail investors accounting for 60% of this market [7]. - The rise of leveraged products, including double or triple leveraged ETFs, has contributed to the prevalence of significant single-day stock fluctuations, as seen when $26 billion worth of stocks were forcibly liquidated to maintain leverage requirements [7]. Group 3: Market Themes and Risks - Current market themes such as artificial intelligence, tax policy changes, and global trade tensions are affecting certain stocks while benefiting others, leading to a temporary suppression of correlations among individual stocks [8]. - If correlations among stocks rise again, it could lead to coordinated sell-offs among major stocks, posing greater risks to overall market stability [8].