sdada

Hey, I looked this up and I think I was wrong: my interpretation of what's in the textbook is that portfolios CAN be in more than one composite. There are lots of rules to try to stop people gaming the system though. Eg all portfolios have to be in at least one composite, you can't switch portfolios between composites without good reason (eg a strategy change) and you can't redefine your composites after the fact.
Sorry for earlier confusion, hope this helps. I didn't think the textbook was very clear on this though, so am interested in what other people think...