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Journal of Financial Economics Vol. 183 2026

Changing the board game: Horizontal spillovers of gender quotas

Luigi Guiso1; Fabiano Schivardi1,2; Luana Zaccaria1,2

1 Einaudi Institute for Economics and Finance · 2 Libera Università Internazionale degli Studi Sociali Guido Carli

open access

Abstract

We examine the effects of mandatory board gender quotas on unregulated firms that are connected to regulated ones via interlocking directorates. After the introduction of quotas, connected firms significantly increase their share of female directors relative to similar unconnected firms. The spillover effects are substantial — at least as large as the direct effects on regulated firms, challenging previous claims that quotas have no broader impact on women in business. Our results suggest that quotas indirectly broaden the supply of candidates for connected firms, along dimensions that include, but are not limited to, gender.

DOI
10.1016/j.jfineco.2026.104326
Volume
183
Pages
104326
Language
en
Sources
openalex crossref

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