Options & Greeks Pillar Hub
Options Greeks measure the sensitivity of an option's value to shifts in underlying parameters: spot price, time, volatility, and interest rates.
Why It Matters
Traders use first-order Greeks (Delta, Gamma, Theta, Vega) to isolate risk parameters, and second-order Greeks (Vanna, Charm) to project how risk changes as expiration approaches.
Core Concepts
- First-Order Greeks: Delta, Gamma, Theta, and Vega metrics defining spot, volatility, and decay parameters.
- Second-Order Greeks: Vanna and Charm, measuring how delta shifts as volatility and time change.
- Greeks Interactions: Dynamic risk models explaining rehedging cycles on expiration weeks.
Learning Pathway
Popular Guides
Vanna Explained
Understand second-order Vanna exposure—the sensitivity of delta to implied volatility shifts—and how it drives institutional flows during vol crush events.
Charm Explained
Master second-order Charm decay—the sensitivity of delta to the passage of time—and how it triggers expiry week pinning flows.
Complete Options & Greeks Library (6 Documents)
Options Basics Reference
Comprehensive reference definitions for moneyness parameters, contract specs, and volume-OI metrics.
Delta Sensitivity Modeling
Understand option Delta, how it measures directional spot price risk, and functions as a probability estimator.
Gamma Sensitivity Modeling
Analyze option Gamma, the rate of change in Delta, and how it drives accelerating dealer hedging pressures.
Vanna Explained
Understand second-order Vanna exposure—the sensitivity of delta to implied volatility shifts—and how it drives institutional flows during vol crush events.
Charm Explained
Master second-order Charm decay—the sensitivity of delta to the passage of time—and how it triggers expiry week pinning flows.
How GEX Is Calculated for NSE: Lot Size, Open Interest and Black-76
The inputs and conventions behind an NSE GEX figure: open interest units, lot size, the Black-76 model on the put-call-parity forward, and the sign assumption.