史上最大规模9月“三巫日”，超5万亿美元“期权到期”！今晚，美股开启“动荡窗口期”？

Core Insights - The upcoming "Triple Witching Day" on Friday is set to be the largest in history, with over $5 trillion in U.S. stock options and futures contracts expiring on the same day, introducing significant uncertainty to market trends [1] - Goldman Sachs estimates that more than $5.3 trillion in nominal value of options will expire, including $3 trillion in S&P 500 index options and $935 billion in individual stock options [1] - This expiration represents 8% of the total market capitalization of the Russell 3000 index, marking the highest scale for a September "Triple Witching Day" [1] Market Dynamics - According to options analysis firm SpotGamma, nearly 90% of the expiring positions are call options, indicating a strong bullish sentiment [1] - As these positions expire, the long stock positions held by traders for hedging will be unwound, suggesting a significant loss of market buying support [1] - Goldman Sachs predicts that the market's rebound momentum is likely to continue until the options expiration event is completed, typically associated with a "gamma squeeze" effect before the expiration, followed by a potential pullback the following week [1]