TheWizard
Give me a museum and I'll fill it. (Picasso) Give me a forum ...
In contrast, I use the voices in my head to make those decisions...Decades ago I went thru a business degree program and took a seminar on portfolio management. Professor basically walked us thru a process to build up a statistical model using linear algebra concepts for portfolio management.
I’m a math geek (minored in math as an undergrad) and still use that model today to inform buy, hold, increase/decrease position and liquidate decisions.