Something I've noticed that is pretty reliable is the retracement towards the untested VWAP close price from prior sessions on the new RTH open.
I'm speculating here that if we have topped out on the SPX500, then here are the most prominent levels to note based on a fibonacci phi-channel drawn on the weekly timeframe. I also drew a simple trend line to show the current regime we've been in. It's typical for the market to have a sharp correction/crash of some kind in the spring. At least it has been...