How to prepare for HF/AM interview

I am interviewing for an an internship at an Asset Management firm that invests heavily in a variety of leading hedge funds, and I was wondering how I should prepare for the interview in terms of technical questions. (Did a search on this but couldn't find much for AM).

I know I'll probably have to keep up with markets / leading economic indicators and pitch a stock or fund or something.

How in-depth does my stock pitch have to be? (Do I need to "spread the comps", etc., or do I just need an intuitive guess?)

Do I have to know hedge fund strategies and things of that nature?

How much theory should I know ? (Options pricing, CAPM, etc.)

What else do I have to know?

Thanks for your help! I bought the WSO guide already and it's been very helpful for IB type interviews, but I've never interviewed at an AM / HFoF firm before, so I'm a little in the dark.