U.S. stocks could see increasingly wild swings in the coming days as option contracts tied to trillions of dollars in securities are set to expire on Friday, removing a buffer that some say has helped to keep the S&P 500 index from breaking out of a tight trading range.
Option contracts worth $2.8 trillion are set to expire during Friday’s “quadruple witching” event, according to figures from Goldman Sachs Group GS.
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Source: https://www.marketwatch.com/story/u-s-stocks-set-for-wild-swings-as-trillions-in-options-contracts-set-to-expire-friday-bf31c751?siteid=yhoof2&yptr=yahoo