Malkiel, Burton; Campbell, John; Lettau, Martin; Xu, Yexiao - Department of Economics, Harvard University - 2001
This paper uses a disaggregated approach to study the volatility of common stocks at the market, industry, and firm levels. Over the period from 1962 to 1997 there has been a noticeable increase in firm-level volatility relative to market volatility. Accordingly, correlations among individual...