In this study, U.S. manufacturing firms' profitability measures including profit margins and returns on equity are examined over the 1971-2005 period. We find strong support for the “insulation hypothesis” as our results show that the profitability ratios and the valuation multiples of U.S....

This study analyzes the short-term and long-term effects on director commitment and composition of board committees following the passage of the Sarbanes Oxley Act of 2002. The first issue we address in the paper is “director commitment”, i.e., whether corporate directors were more or less...