#HedgeFunds reduce net shorts in $SPX futures from 4-year high. May have locked in profit. Cash down 1.3% for week, but intraday Tue down as much as 5.1%. Longs can force short squeeze should cash (2837) decisively take out 2850s. Next week, $AAPL, $AMZN, $MSFT, $GOOG, $FB report https://t.co/u97CBlQ4Zy