I wanna write this as a word of warning to people, i damn near blew out today with these moves on the volatility instrument, it started as something where i was going to be willing to take 10k of risk on the VXX short, cause i thought 2700 would hold up on the ES, i cant remember where i started probably like high 39's, 39.80, or something, then i added, and i added, and i added, then when the ES puked, suddenly all these volatility ETF's locked up and i lost the ability to cancel orders and send new onees, I was short 22k shares of VXX at one point thinking i was going to blow out i was trying to punch out but my software wouldnt take those orders either, and thankfully it came all the way back down and i finished down a thousand bucks, but if it had went parabolic to 60 at that point which is what it did afterhours, i would have been on the breadlines looking for work, it was very close to a problem i couldnt fix, point is dont trade size when volatility gets that insane.