When ever Apple hits the top of the rising wedge, it seems to experience at least a 30% correction shortly after. The points at which that happens are highlighted by the yellow circles.
The bottom of the rising wedge seems to be where the price eventually bottoms out (blue circles), but it has broken down from the rising wedge before.
Right now, the top of this multi-decade long rising wedge is acting as support for Apple. If history is any indication, then perhaps we are due for a 30% correction. Or perhaps not.