SPY (Surprising) End of Quarter Window Dressing Challenge

EOQ, Recently, there's been a lot of blabbity-blab about institutional investor "End of Quarter" sector rotation window dressing going on, so I wanted to "explore it" to validate or debunk, much akin to MaxPain, which IMHO is bunk.

I was sure this would also be hog-wash, and was surprised by the results.




But maybe this is because this is a bear market.
Remind me in a couple years to check this again.