Are you looking for clues about the next big move in stock market? It might not be a bad idea to follow the Euro. Take a look at the correlation between $SPY and $FXE going back a little over a month (30-min timeframes):
Equities are ripping this morning, but Euro weakness is telling us that something might be wrong. Both $SPY and $FXE are running into former support from this summer. This support appears to be turning into a resistance for $FXE.
Will $SPY follow?