Academics and investing Risk and the stockmarket Jun 1st 2016, 15:55 BY BUTTONWOOD
Academics and investing Risk and the stockmarket Jun 1st 2016, 15:55 BY BUTTONWOOD RISK is linked to reward; it is virtually the first lesson one learns about finance. Safe assets pay low returns; if you want higher returns, you have to risk your capital. Academics have been examining these issues for decades, and have come up with such insights as the capital asset pricing model (CAPM) and the efficient market hypothesis. In turn, investors have applied their insights to the market. The techniques they have adopted may have changed the nature of the market. Risk and reward may not be as securely linked as they used to be. Two papers in the spring Journal of Portfolio Management bring these issues to light. The first—“Risk Neglect in Equity Markets” by Malcolm Baker of the Harvard Business School—looks at an obvious flaw in the CAPM. The model suggests that stocks which are more volatile than the overall market (high beta in the jargo...