Its hitting the 2 extenxion on the fininacci retracement at 610 611 also previous high on the daily chart december 6th high is 609 so makes since to retrace here . I bought many put options today deep in the money i think thats a major resistance now , the macd on the monthly shows bulls losing monentum . I am expecting a correction to start end of month or february . I can take the loss and close the options if they push it above 610 . Not a recomendation just my thoughts