CAPM - Can It Be Used for Hedge Funds?

Based on the Markowitz’s mean-variance model, the Capital Asset Pricing Model (CAPM) inherits all the shortcomings of the latter in addition to its own assumptions that makes it hardly applicable for hedge funds and non-linear assets. These assumptions can be summarized as follows:

  • Investors are rational and risk averse. They pursue the only interest of maximizing the expected utility of their end of period wealth. Implication: The model includes the single time horizon for all investors.
  • The markets are perfect, thus taxes, inflation, transaction costs, and short selling restrictions are not taken into account.
  • Investors can borrow and lend unlimited amounts at the risk-free rate (erf ).
  • All assets are infinitely divisible and perfectly liquid.
  • Investors have homogenous expectations about asset returns. In other words, all investors agree about mean and variance as the only system of market assessment, thus everyone perceives identical opportunity.
  • The information is costless, and all investors receive the same information simultaneously.
  • Asset returns conform to the normal distribution.
  • The markets are in equilibrium, and no individual can affect the price of a security.
  • The total number of assets on the market and their quantities are fixed within the defined time frame.
While the CAPM emerges as the most commonly used approach for both institutional and private investors, somebody has to prove that this simplified and naive model really holds true in the today's market.
x

Demo Request

 

  Mail is not sent.   Your email has been sent.
We use cookies to improve our website. By continuing to use this website, you are giving consent to cookies being used. More details…