I'm thinking the current 2630-2815 range is going to hold for a bit. In my view, fundamentals did not support the pre-October highs, and the crash was an appropriate correction of the extended valuations. The market seemed to still be priced for tax-fueled earnings growth, even though common sensibility and analyst projections did not support that. The volatility since seems to be the market trying to get a handle on itself, but I feel that fair value is right around the upper part of that range (2750-2800), so I'd be buying if we see a retracement back down towards 2630.
I wrote a blog post on this a few weeks ago that still broadly applies today (
https://www.ganalysis.com/sp-500-some-perspective/). It includes some data-driven analytics that speak to these views in greater detail.