Im long SRS as well but my cost average is $60. I have sold about 2/3 of it on the way up and looking to sell the entire position sometime today or tomorrow, waiting for the spx to break lower below 750 before doing so, however this ETF can be $80 on monday and in 2 days be $50 a share. I have had many missed opportunities in these 2X etfs, I had SKF when it ran to $300+ and didnt take profits in about a weeks time it was down over $150, ended up selling for a small gain. Taking profits in the inverse as quick as you can is something you need to do in these bear market, any bear market rally can easily send these inverse etfs down 40-50% in a week or two.