Price action on a chart shows what decisions point72 makes as a result of spending all that money. (Not point72 specifically but institutions in general) You can't hide volume.finally, in regards to the market wizards series — they are a fun read but don’t really tell the truth about how those traders actually make money. Tom DeMarks indicator is $500/mo lol, that’s not a “pretty penny” when Point72 has hundreds of analysts (all getting paid 200k-1mm — and guess what, they’re doing fundamental equity research).
A retail trader cannot compete with the big boys for research. The researchers you mention make more money in salary than most retail accounts. The retail trader just has to figure out what the big money is doing and follow along.
Watching price tells what the big boys are doing.