Quadruple Witching Wiki?

The Dow Jones industrial average surpassed the 30-day trailing average volume within the first two hours of the session. Today is known as quadruple witching.
What does the term Quadruple Witching means? I couldn't find any wiki page about it.

asked by Isaiah in Personal Finance | 2306 views | 06-18-2010 at 07:56 PM

It could be a very volatile day for American stock markets, as traders experience the effects of what's known as quadruple witching.

The quadruple witching day occurs on the third Friday of the last month of each quarter. It generally leads to higher-than-normal trading volume as investors look to close out certain positions or roll them over into the next quarter.

Seasoned MarketBeaters know the “quadruple” refers to the four types of options and index futures that expire Friday. They include stock-index futures, stock-index options, stock options and single stock futures expiring. It’s a quarterly phenomenon that is thought to be potentially amplify market swings and pump up trading volumes.

It used to be “triple witching” Friday until single-stock futures began trading in 2002.

answered by Gerard | 06-18-2010 at 07:57 PM

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