The net #short position in E-mini S&amp;P 500 futures is growing and is now at a level it was last at in 2011. The short position could be a #contrarian signal for the market, meaning #stocks could keep #rising. @CNBC $spx $ndx $amzn $aapl $avgo $nvda $lrcx https://t.co/iR2eswuGRP