It's triple witching day today. Sounds very exotic and exciting, doesn't it? As if three times the usual number of fairies and elves are around and about! The reality is rather more banal. Triple witching, or the triple witching hour, is a financial term and happens four times a year. It refers to a trading session on the Stock Market when the contracts for stock index futures, index options and equity options all expire on the same day. The result is increased, sometimes extremely volatile, activity and price changes on the Stock Market.