Derivatives & Modern Portfolio Construction
Neil Blyther on how a portfolio is actually built once you have more than one idea in it — position sizing, correlation, and the instruments that let you hold a view without betting the whole book on it. Derivatives get talked about as leverage. Used properly they are the opposite: the cheapest way to define your downside before you need to. What they cost, what they protect, and when they are the wrong tool. A working session, not a lecture.
