Why Value Investing is a Successful Investment Strategyby Seth Klarman
Value investing lies at the intersection of economics and psychology. Economics is important because you need to understand what assets or businesses are worth. Psychology is equally important because price is the critically important component in the investment equation that determines the amount of risk and return available from any investment. Price, of course, is determined in the financial markets, varying with the vicissitudes of supply and demand for a given security. It is crucial for investors to understand not only what value investing is, and that it works, but why it is a successful investment philosophy. At the very core of its success is the recurrent mispricing of securities in the marketplace. Value investing is, in effect, predicated on the proposition that the efficient-market hypothesis is frequently wrong.