Since its ATH, SPX has likely seen 3 waves down and 3 waves up so far.
A potential base channel since the Oct 2022 low is now well defined. SPX is currently probing this base channel high.
If the advance since Oct 2022 is indeed an impulse, SPX should rise comfortably above this base channel.
If the advance is corrective, the base channel should be a formidable resistance.