S&P 500 futures trading 51-points above fair value

Stock futures are pointing to an open around 1940, which is about 50 points above the 1893 close yesterday.

The close was the lowest since October of last year when a similar (albeit smaller) market panic hit.

One level I'll watch is 1957, which is the 38.2% retracement of the five-day drop. The December low of 1972 is another resistance level to keep in mind.