Empirical analysis finds an 11-percentage-point increase in collusion between firms after sharing executives, highlighting regulatory antitrust concerns under Clayton Act Section 8.
This paper studies whether common leadership, defined as two firms sharing executives or board directors, contributes to collusion. Using an explicit measure of labor market collusion from unsealed court evidence, we find that the probability of collusion between two firms increases by 11 percentage points after the onset of common leadership, a ninefold increase over the baseline rate. These results are not driven by closeness of product or labor market competition. Our findings are consistent with the increasing attention toward common leadership under Clayton Act Section 8. Institutional subscribers to the NBER working paper series, and residents of developing countries may download this paper without additional charge at www.nber.org.
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Herrera-Caicedo et al. (2026) studied this question.
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