For corrective patterns I like to supplement my analysis with . For those unfamiliar, it is guesswork, but a guide to understanding how ups/downs unfold.
So what to make of Wave 4 correction in SP500? Well, using xabcd is my "go to" approach. For now I expect a standard "xa as the move from 2573 down to 2533. From there the Friday 2/9 bounce from 200d starts "ab" projected to 2750 area. A re-test of the 2533 low carries lower, but I expect the 200d (or slightly higher) to hold. From there a rise to new ATH gets launched, consistent with a start of Wave 5. The estimate fits within wider (red) reflected in my post.
Will it happen? Well, you gotta have a plan and then adapt from there once the market weighs in.