Friday, June 19, 2015

Quadruple Witching

The expiration date of various stock index futures, stock index options, stock options and single stock futures. All stock options contracts expire on the third Friday of each month and once every quarter - on the third Friday of March, June, September and December - all four asset classes expire on the same day. Because futures and options investors must close out of their positions on those days, they often witness increased trading volume.

(via Investopedia)