Читать книгу How To Become A Business Angel - Richard Hargreaves - Страница 48

Modern portfolio theory (MPT) is one of the most influential economic theories about investment returns. It was first published in 1952 and has been widely used ever since. It addresses the concept of spreading risk through several investments and was developed for investors in quoted stocks who invest in large markets with many investment opportunities.

The theory says that it is not enough to look at the expected risk and return of one particular stock. The risk with each individual investment is that the return will be lower than expected. The risk in a portfolio of diverse individual stocks will be less than the risk in holding any one of the individual stocks.

MPT quantifies these benefits mathematically but put simply the theory argues for not putting all of your eggs in one basket, which brings us to the angel investor.