Drawing the volatility skew

Yeah Dog,welcome to the club!!!!

Thanks to you, in part - I think Matt owes you a finder's fee. :) I remember you mentioning them WRT looking at skew, and that's exactly what I'm wrestling with now. Gotta say, these guys make it a lot easier than doing it by hand!
 
Matt, what is mwVol? Your website defines it as "ATM weighted market width in implied volatility terms" but I'm still not sure what it means.
We measure how wide the bidIV - askIV is for every option and weight higher closer to ATM.
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It is helpful to judge liquidity. The last row above notice how the Oct 7 expiry is the widest 0.4% while the Oct 21 monthly expiry is tightest.
We also have two constant maturity mwVols at 30 days and 2 years.
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In the TradeBuilder tab you can graph the mwAdj30 (nice name I know) and see it is about 0.02%
The mwVol is also useful to observing market maker duress and is a good signal that the market is weakening.
 
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