Yesterday’s low fell a tick above the 50% retracement line relative to the July 13 bottom, but if the futures were to go still lower today they’d hit a theoretical support at 927.50 that equates to a 0.618 retracement. These numbers will probably serve as well as any Hidden Pivot that I can identify (one of which caught yesterday’s low fairly closely — i.e., within less than 1.00 point).