Learn about the witching hour, the final trading hour on expiration days for options and futures, a period marked by increased market volatility and high trading volumes.

Discover more about bid size, including what it means, how it affects trading, and examples to better understand investor purchase quantities at set prices.

We may earn commission from links on this page, but we only recommend products we love. Promise. Listen, I’ll be the first person to tell you that homemade face masks can be a little questionable.