An event that occurs when the contracts for stock index futures, stock index options and stock options all expire on the same day.
Triple witching days happen four times a year on the third Friday of March, June, September and December.
This phenomenon is sometimes referred to as "freaky Friday".[@more@]
The final trading hour for that Friday is the hour known as triple witching. The markets are quite volatile in this final hour, as traders quickly offset their option/futures orders before the closing bell. If you are a long-term investor, triple witching will have a minimal impact on you.
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