Usually small cap outperforms at the end of a bullish cycle. When a bearish cycle starts, small cap stocks were sold fast and investrs flock to safety by selling small cap and buying blue chip stocks. Russel 2000 has been outperforming S&P lately but it will not last specially if maket sells off and investors start to run away from risky sectors to healthier stocks. Based on the assumption that no deal is on short term horizon, I recommend shorting Russel 2000 than shorting S&P 500. IWM is an ETF fund that follows Russel 2000. TNA is 3X IWM and TZA is -3X IWM. Do your own research before any trade. I am very patient on my trades so if you are in a hit and run kind of trades , you might get dissapointed and might think that your trade is not working.