Let's say you lost your edge and you had to start all over again
In which of these topics would you invest the most time into?
That's a good question, and difficult to answer,
Portfolio management...what portfolio? That sounds like something a mutual fund investor or fund manager does.
Correlation matrix....that sounds gimmicky, like something you'd discover in a book or trading course.
Price action....following the action of the price....that works, marginally, I suppose.
Statistics....that works, too, marginally I suppose.
Everything generally, loosely, works in trading -- Until the market decides it hates your basic indicators, strategies and self. Then you are back to Square 1, wondering, looking sad and confused and disgruntled.
If I had to start over, I'd do exactly the same thing I did before. Question and observe why the daily S&P moves the way it does. And then amplify that trade movement with leverage, options.
If a trader can do this, they can make more than a million a year -- much more,