The IB staff said that vix options is on the vix index. But some others said that vix option is on the vix futures. If the options is on futures which futures month correspond to the option? may option to may futures? And if vix options is on futures and when at expiration, does the futures price or index level is used on whether the option is in or out of money?
Hi, I asked some of the same questions just a few days ago: http://www.elitetrader.com/vb/showthread.php?s=&threadid=164424