What is Theta? What is option time decay? How does time decay work? These are common questions of beginning options traders. Theta is the Greek term used to denote option time decay. Theta is one ...

Theta is the decay in an option’s time value as it gets closer to expiration. Time decay is a big risk in options trading.

The Nifty derivatives market is set for a major shake-up as weekly expiries move from Thursday to Tuesday starting tomorrow.