Capital Market Theory
Outline Overview of Capital Market Theory Assumptions of Capital Market Theory Development of Capital Market Theory Risk-Return Combination Risk-Return Possibilities with Leverage
From Portfolio Theory to Capital Market Theory Capital market theory builds on portfolio theory and develops a model for pricing all risky assets The concept of a risk-free asset is critical to the development of capital market theory The expected return on a risk-free asset is entirely certain and the standard deviation is zero Covariance of a risk-free asset with a risky asset is zero
Expected Return of a Portfolio that contains a risk-free asset and a risky asset E(R p ) = w x E(r A ) + (1-w) x r f Standard Deviation of two asset portfolio Expected return and the standard deviation of expected return for such a portfolio are linear combinations A graph of possible portfolio returns and risks will be a straight line between the two assets
Risk-return possibilities with Leverage How can an investor attain a higher expected return than is available at point M in the graph? Borrowing and lending possibilities and capital market line Risk-less asset created lending and borrowing possibilities and a set of expected return and risk that did not exist before