Understanding Options Greeks: Delta, Gamma, Theta, Vega
Deep dive into the Greeks - essential metrics for understanding how option prices move.
💡 Key Takeaways
- ✓Delta = price sensitivity to stock movement
- ✓Theta = daily time decay (enemy of buyers)
- ✓Vega = sensitivity to volatility changes
- ✓Gamma = rate of change in delta
Delta measures how much an option price changes per $1 move in the stock. Call deltas range 0 to 1; put deltas range 0 to -1. ATM options have ~0.50 delta.
Gamma measures the rate of change in delta. High gamma means delta changes quickly. ATM options near expiration have the highest gamma.
Theta measures time decay - how much value an option loses each day. Options lose value as expiration approaches, accelerating in the final weeks.
Vega measures sensitivity to implied volatility. High vega means the option price changes significantly with volatility swings.
Use Greeks together: Delta for directional exposure, Theta for time decay management, Vega for volatility plays, Gamma for understanding acceleration.
Summary
- 1Delta = price sensitivity to stock movement
- 2Theta = daily time decay (enemy of buyers)
- 3Vega = sensitivity to volatility changes
- 4Gamma = rate of change in delta
📖 Recommended Reading
Want to dive deeper into this topic? Check out our recommended book to master these concepts.
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Disclaimer: This content is for educational purposes only and should not be considered financial advice. Always do your own research and consult with a qualified professional before making investment decisions.
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