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• A Quadruple Witching date is a stock market term that refers to a day on which contracts for stock index futures, stock index options, stock options and single stock futures all expire. Trading on these days is typically volatile. A Triple Witching date is an older version of the same occurrence, but without the inclusion of single stock futures expiring.

• Fast Facts

  1. Quadruple Witching days occur on the third Friday of March, June, September and December.
  2. The last hour of these trading days, from 3PM to 4PM EST, is referred to as the "quadruple witching hour."
  3. The term "triple witching hour" originated in 1980s
  4. Considered not as volatile as they once were, given market restructuring and online trading

• Key Quadruple Witching Dates

  • September 16, 2005: 3.092 billion shares traded
  • March 18, 2005: 2.783 billion shares traded
  • December 17, 2004: 2.69 billion shares traded
  • June 20, 2008: Quadruple Witching Day
  • September 19, 2008: Quadruple Witching Day

• Related Mahalo Pages

  New York Stock Exchange | Stocks | How to Buy Stocks

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