My thoughts are not technical but a general market observation.
Decades ago, investors were a relatively small group with "a guy/broker" doing the buy and sell often in 100 share lots. A niche of money geeks and what not.
Now, everyone is bought into the market, whether on an app, online account or most importantly their work 401k. Common as common can be.
That plays out by holding up the market. 401k admins are buying because they have to. Are they Berkshire big purchase, no. Not in a huge single entity but total dollars yes. Overall money now HAS TO GO IN. Vs the past where market geeks caused more extreme swings as they held or sold.
How much of the overall market is institutions at this point? Did it rewrite how this all plays out?