The JTS is sensing a good shorting opportunity today. It will go short on the close, which moves the JT Composite all-in short. A few things to mention, I would not short TNA this time of year. Shorting XIV is out also, due to contango. IMO, it's probably best to short the SPX. I would be purchasing some SPXU today... How much SPXU would I purchase? Not too much. Liquidity via the Fed's POMO is strong all month meaning if you go short right now you're fighting the fed. They say don't do that. :) If I were trading, I'd probably go 40-50% short keeping 50-60% cash.
2012 stats are all done and I should be able to post them this evening. Heads up for that.