Monthly Options Volume

I've been tracking the symbols with the highest options' volume for several months now...good to understand the liquidity of your vehicles and the liquidity of other's you might want to start trading.  The VIX and the index ETF's are interesting.



Source: http://www.cboe.com/data/monthlyvolume.aspx

And don't forget the options on futures.  Here's a snapshot of daily volume.

Source: http://www.cmegroup.com/education/options.html

Monthly futures options report: http://www.cmegroup.com/education/monthly-options-review.html

Quarterly futures options report: http://www.cmegroup.com/education/electronic-options-spotlight.html