Artful Dodger
"Neko no me"
Stop it! I'm already overexcited enough!
Don't get too excited. The run-up in early Jan 2021 was almost exclusively a short covering rally. There were over 100M shares sold short at the closing cross on Fri, Dec 18, 2020 and all those shares had to be delivered by mid-January or else they would generate FTD reports in massive numbers. The run-up in price was easily predicably in advance given the short interest numbers as of Dec 31, 2020 (and released in mid-Jan '21).
Now there may be a run up in the SP due to Q4 2021 P&D, but it will be for a different reason than Jan '20, which was triggered by the S&P 500 addtion.