Software to graph implied volatility??

Hi,

Dose anyone know of any software that can plot a graph of Options Volatility Skew for OTM PUTs and ATM Calls with Between 10 days and 60 days left before expiration?

I am using a ratio of Strike Price/Stock Price to define ATM and OTM Options.

ATM Calls = Strike Price/Stock Price Ratio between .95 and 1.05
OTM Puts = Strike Price/Stock Price Ratio between .80 and .95
Options Volatility Skew = Volatility of OTM Puts – Volatility of ATM Calls

Thanks!
 
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