SPX has space to go higher.

Inside PitchFork showing more room for the SPX to rally.

Starting September 2012, price has found support and resistance within the Inside Pitchfork.

If price reacts the same as it did in May 2013 the top of the inside pitchfork could act as resistance.
Alt, a break out of top TL of inside pitchfork could set up a powerful rally higher.