So the low at last night at 2711 was a perfect 50% pullback from the recent rally off the low that topped out at 2817, which itself was a near perfect fibonacci 61.8% retracement from the all time high to the recent low.   Markets don't always adhere to such levels in any useful way, but the S&Ps seem to be lately.

Also the low last night is a possible 12 day cycle low and an inverted H&S bottom (possibly).  

Could get a bid over the next week....