2万亿期权周五到期，年内第二个“四巫日”太可怕？

美港电讯2021-06-15

周一，纳指、标普500指数再创历史新高；与此同时，衡量标普500指数波动性的VIX指数近日持续走低，目前已经触及去年疫情爆发以来的最低水平。金融博客零对冲撰文指出，美股这样的平静日子很可能在本周五就画上句号，这是年内第二个“四巫日”，届时大量美股期权将同时到期。高盛的内部衍生品专家Rocky Fishman预测6月即将到期的期权规模和之前一样巨大，具体而言，本周五到期的期权包括：价值2400...

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精彩评论

Justin_L
2021-06-16
Justin_L
经常的啦
中国ChinaATM
2021-06-16
中国ChinaATM
阿里巴巴，腾讯，美团现在大减价~真便宜，赶紧买进！
- 中国ChinaATM:
  Eat apple啦你
- samsam12:
  eat banana啦你
Savage_Never
2021-06-16
Savage_Never
做任务嘿嘿嘿求赞求评论蟹蟹
高明兴_8399
2021-06-16
高明兴_8399
大家都跟风，自然就引起恐慌
haiwei183
2021-06-16
haiwei183
跌了一点
感恩线
2021-06-16
感恩线
是要大涨吗
- 高明兴_8399:
  想多了

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Fishman预测6月即将到期的期权规模和之前一样巨大，具体而言，本周五到期的期权包括：价值2400亿美元的标普500指数ETF期权，2000亿美元的迷你标普500指数期货以及1.8万亿美元的标普500指数期权。\n\n值得注意的是，执行价格接近标的资产价格的期权数量创下10年来最低，由于近期美股一直处于高位，预计大部分6月未平仓合约价格都低于当前的股指现货价格。如下图所示，行权价在3900和4150附近期权分布密集。这意味着在本周五之后，这些点周围可能会有一定的支撑，直到被新的gamma重新填充。\n\n此外，据高盛估计，折式合成期权（combos）占标普500指数期权规模的15-20%，即调整后的未平仓合约总额将达到1.5万亿美元，仍远大于即将到期的单一股票期权的未平仓合约总额（7750亿美元）。\n这个“四巫日”之所以特别，一个重要原因是此前大盘波动率实在低得异常。高盛策略师指出标普500指数过去13个交易日的波动率仅为5.1%，这是自2019年以来最低。\n\n这一幕和1997年8月相似，当时标普500指数不断续刷新高，与此同时VIX指数却处于新低。\n\n大盘波动率极低，但诡异的是，个股却频频上演极端波动，例如AMC——虽然AMC上周名义成交量仅70亿美元/天，远低于亚马逊的1200亿美元/天，且远低于第一季度的峰值，但在所有个股中其合约成交量最高，期间可实现的成交量接近400%。\n分析指出，散户驱动了所有个股期权活动的很大比例，近期个股期权活动的增长主要集中在低价股票上，导致过去两周合约交易量的份额与名义交易量不匹配。\n目前美股的多头伽玛头寸规模依然高企，野村证券的Charlie McElligott指出，极低的大盘实际波动率与大量看涨gamma期权到期的情况是危险的，即一旦头寸集体平仓，实际波动率可能会瞬间回升。同时，VIX指数期货相对于标普500指数Beta值不断上升，这表明，如果市场出现抛售，空头gamma仓位会回升，市场将变得更加不稳定。\n\n高盛还指出，临近周五“四巫日”，美股期权交易量正在下降，这个反常现象出现主要是因为每周到期的短期期权正在变得火热，尤其是大受散户投资者欢迎。事实上，第三个周五到期的标普500指数期权交易量百分比处于历史最低点，甚至小于每周一和周三到期期权交易量的百分比。\n\n超短期期权交易量增加的一个解释是散户对部分个股的热潮。高盛指出：\n\n 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