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What Are the ‘Greeks’ in Options Trading?

The Greeks are a set of risk measures used to quantify the sensitivity of an option's price to changes in various underlying factors. The main Greeks are Delta (sensitivity to price), Gamma (sensitivity to Delta), Theta (sensitivity to time decay), and Vega (sensitivity to volatility).

Traders use these metrics to manage the risk of their options portfolios.

What Is the Significance of the Black-Scholes Model in Calculating the Greeks?
What Is the Concept of “Greeks” in Crypto Options Trading?
How Does the Concept of “Greeks” Relate to the Black-Scholes Model?
How Do Traders Use Volatility (The “greeks” Vega) to Manage Their Options Positions?