One more brief update here. SPX closed very near its lows today, March 14, 2022. This was another piece of evidence adding a couple points to the bearish case.
In my above post, I mentioned 415.12 on SPY as a level to watch. The equivalent level on SPX is 4157, the lows from last week, which equates to about 4138 in ES1 futures. So far, this level has held, but tomorrow and Wednesday's price action may see it break, unless a bounce is imminent.
I am keeping bearish options positions (small sizing) open through tomorrow and perhaps Wednesday.
Anything can happen, so I'm being more cautious as this should be a volatile week with quad-witching expirations on Friday and FOMC presser on Wednesday. If the put-call ratio spikes above its highs for the past couple months, and if VIX hits 38-40, it might be a buyable dip. In the meantime, it would seem that SPX heads lower based on all the price action last week and this week.