Why the Greeks Don't Add Up to Your P&L
The Greeks never sum exactly to your option P&L. Here is the Taylor expansion they come from, the cross terms inside the leftover, and why path matters.
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What Is Vomma? The Convexity of Vega
Vomma is the rate of change of an option's vega as implied volatility moves. See where it peaks on the strike ladder, measured on a real SPY option chain.
The Option Greeks Explained: Delta to Rho
Delta, gamma, theta, vega and rho, the five option greeks, demonstrated by tracing one real SPY call through its whole life against the stock.
What Is Option Vega? Volatility Sensitivity
Vega measures an option's sensitivity to implied volatility. Watch IV spike on a real SPY call, see vega grow with time, and drive the earnings vol crush.
What Is Implied Volatility? IV, Explained
Implied volatility is the future move an option's price implies. See IV across stocks, the term structure, the volatility skew, and a year of SPY's vol regime.