Compare volatility smiles from bid and ask prices for calls and puts with 93 days to expiration . Compare historical volatility for a reach-back period of 93 days (yellow dot).

When an option price is less than the theoretical value would be if the underlying had an expected volatility of 0%, Marlow negative implied volatility preserves comparative information.

Compare term structures of implied volatility from bid prices of put options with different strike prices with term structure of historical volatility (yellow line).  
 
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Option Chain Implied Volatility Calculator and Dynamic Display Engine
By Jerry Marlow

To learn more about the calculator and display engine , click here.


Jerry Marlow, MBA
Stock Option Tools,
Tutorials and Seminars
(917) 817-8659

jerrymarlow@jerrymarlow.com

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