What Is an Implied Volatility Index? IV30 & VIX
An implied volatility index is a constant 30-day IV built from two expirations. See the IV30 formula worked on real AAPL options, and how the VIX family fits.
#term structure
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IV Term Structure: What the Curve Tells You
The IV term structure is implied volatility plotted by expiration. See what upward sloping and inverted curves mean, with real option data on the shape.