0DTE
Zero Days to Expiration. An option expiring on the same day it is traded.
Theta
Greek measuring sensitivity of option price to the passage of time.
Gamma
Greek describing how quickly delta changes as the underlying price moves.
Vega
Greek measuring sensitivity of the option price to changes in implied volatility.
Covered Call
A position combining long stock with a short call on the same underlying.
Short Put
Selling a put option, typically to collect premium while taking on downside risk.
Assignment
When an option seller is obligated to buy or sell the underlying due to an in-the-money option being exercised.