This paper examines whether the chairmen of the boards (COBs) impose their life cycles on the firms over which they preside. Using a large sample of unlisted firms, we find a robust negative relation between COB age and firm performance. COBs age much like ‘ordinary’ people. Their cognitive...

This paper examines whether the chairmen of the board (COBs) impose their life cycles on the firms over which they preside. Using a large sample of unlisted firms, we find a robust negative relation between COB age and firm performance. COBs age much like ‘ordinary' people. Their cognitive...

How much of entrepreneurial performance is sheer luck compared to talent, experience, education, and hard work? We define luck as unexpected performance and look for an answer in a large survey of entrepreneurs. Accordingly, luck ranks last in importance among various success factors and...

How much of entrepreneurial performance is sheer luck compared to talent, experience, education, and hard work? We define luck as unexpected performance and look for an answer in a large survey of entrepreneurs. Accordingly, luck ranks last in importance among various success factors and...

From 1963 through 2015, idiosyncratic risk (IR) is high when market risk (MR) is high. We show that the positive relation between IR and MR is highly stable through time and is robust across exchanges, firm size, liquidity, and market-to-book groupings. Though stock liquidity affects the...