Options Greeks Explained: Delta, Gamma, Theta, Vega for Beginners
Options · 16 min · Published 2026-03-22
Learn options Greeks for free. Complete guide to Delta, Gamma, Theta, Vega, and Rho — what they measure, how they interact, and how to use them in options trading.
The Options Greeks are risk measures that describe how an option's price changes in response to various factors. Delta measures price sensitivity ($0.50 Delta = $0.50 change per $1 underlying move), Gamma measures Delta's rate of change, Theta measures time decay (how much value the option loses per day), and Vega measures sensitivity to volatility changes.
Frequently Asked Questions
Which Greek is most important for options trading?
It depends on your strategy. For directional trades, Delta is most important. For income strategies (selling options), Theta is key. For volatility plays, Vega matters most. All Greeks interact, so understanding all of them is essential.
What does negative Theta mean?
Negative Theta means your option position loses value each day from time decay. Option buyers always have negative Theta, while option sellers have positive Theta (they benefit from time passing).
Can I learn options Greeks for free?
Yes. Tradyom's free options course covers all Greeks with practical examples, showing how they affect real trade positions and how to use them for risk management.