In modern trading, triple witching happens on the third Friday of March, June, September, and December (the last month of each quarter). In the U.S. stock market, the last hour of the trading day ...

A "triple witching," or the simultaneous expiration of stock options, index futures, and index futures options, occurs four times a year. The first triple witching of 2025 will take place this Friday.

The final hour of the day, the triple-witching hour, can sometimes result in a less liquid market for certain securities. That can increase spreads and give savvy traders the opportunity to trade ...

options contracts tied to more than $4.5 trillion in stocks will expire during the latest quarterly “triple-witching” event. Calculations to determine the notional value of these contracts can ...