CEOs have power in varying degrees yet it is not clear that more CEO power is better than less. Any attempt to clarify this relationship must first address the challenge of identifying an appropriate measure for CEO power. We develop an aggregate measure with which we investigate the relationship between CEO power and firm performance. We find evidence that firms with powerful CEOs perform better than other firms as measured by Tobin’s Q. This difference is both economically and statistically significant. We use Fixed Effect multivariate regressions to take into account time and industry specific effects. This result has implications for firms seeking to optimise firm performance. We tackle concerns of endogeneity by using lagged values of our main explanatory variable and separately employing an instrumental variable. An extension confirms that research and development spending is one channel through which more powerful CEOs generate additional firm value.
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