Support Levels for SPY
Looking at the premise of two of the biggest tail-risk crisis as comparison, it seems a fall of 50%-60% over a 500 day period is a fair comparison.
2020: Coupled with almost two combination of Fear of Coronovirus with the added pain of Oil Prices Plunging and Selling of Longer-dated Treasuries, the selling will be further exacerbated and we are only a fraction of reaching key support levels. The fall is partially cushioned in the short interim due to circuit breakers to attempt to reduce the speed of the fall.