double witching hour

double witching hour definition - finance
The simultaneous expiration of stock option and index option contracts, which may create market volatility. Occurs on the third Friday of the month, excluding March, June, September and December. In these four months, futures contracts also expire, in an event called triple witching hour.

Webster's New World Finance and Investment Dictionary Copyright © 2003 by Wiley Publishing, Inc., Indianapolis, Indiana.
Used by arrangement with John Wiley & Sons, Inc.

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