The hourly S&P 500 (SPX) chart courtesy of Trading View illustrates the Elliott wave subdivisions since the Important 10/30/20 bottom.

Note the significant bearish divergence on the hourly RSI, it implies at least a short-term peak could be in place as of the late 02/12/21 rally.
If there’s more upside it could be brief, perhaps within the first half hour of trading on 02/16/21. SPX 3948.76 is the bullseye target and likely top.