Quote from DonnaV:
http://www.elitetrader.com/vb/showthread.php?s=&threadid=49586&perpage=6&pagenumber=796
Rallymode..do you use chartbenders, ivolity or any other service to find candidates or do you have a stable of stocks you follow?tia
donna,
I do both. I have a watchlist that i follow and i use a volatility scanner. Usually the stocks that you find with IV skews before earnings will have those skews every earnings season. These are the best free volatility skew finders on the net.
1. ivolatility.com
2. optionetics.com (bottom right corner tab for options volatility ranking, click on expensive)
3. Interactive Brokers IV skew market scanner (for customers only)
optionclub.com was the best one out there for a while but it shut down.
Volatility skew between the two months 10-15%, ideally 20% but very hard to find on nondrug stocks. Oh yeah, whatever you do, dont do calendars on biotechs or drug companies.

Also, when picking out IV skew based calendars please bear in mind that the front month options are more expensive for a reason, most of the time its pending earnings or major news. With that in mind moves of 5-10% are a norm. However, the trick is 1. trying to find that stock that wouldnt move much, or 2. picking the right strike 5-10% away. If you follow the same companies earnings season after earnings season it becomes easier to work with this.