A Hidden Pivot support at 867.20 is currently my worst-case target for the correction begun Monday from $918. You can try bottom-fishing there with a stop-loss as tight as 866.40. Alternatively, a thrust today that touches 899.70 would signal a reversal and no more pain for a while. Please note that the big-picture target at 952.30 given here earlier will remain valid as long 803.60 is not exceeded to the downside.