Modern portfolio theory, or mean-variance analysis, is a mathematical framework for assembling a portfolio of assets such that the expected return is maximized for a given level of risk. It is a forma
Efficient Frontier. The hyperbola is sometimes referred to as the 'Markowitz Bullet', and is the efficient frontier if no risk-free asset is available. With a risk-free asset, the straight line is the efficient frontier.
Modern portfolio theory suggests a diversified portfolio of shares and other asset classes (such as debt in corporate bonds, treasury bonds, or money market funds) will realise more predictable returns if there is prudent market regulation.