DOJ and FTC File First Antitrust Brief Targeting ESG Coordination — Texas v. BlackRock

On May 22, the Department of Justice and Federal Trade Commission filed a joint Statement of Interest in the Texas Attorney General's case against BlackRock, State Street, and Vanguard — becoming, for the first time in a U.S. court filing, the federal government's explicit position that industry-wide ESG coordination can violate the antitrust laws. The agencies advanced two theories: under Section 7 of the Clayton Act, minority share acquisitions by ESG-minded investors can be retrospectively challenged if post-acquisition conduct damages competition; and under Section 1 of the Sherman Act, the fact that an alleged agreement relates to "climate" issues does not insulate it from the concerted action prohibition. The agencies dismissed the defendants' "solely for investment" passive investor defense as masking anticompetitive conduct "behind the veil of passive investing and good governance principles." For asset managers, institutional investors, and the law firms advising them, this brief signals that ESG stewardship activities — voting, engagement, participation in net-zero alliances — face a live and expanding antitrust scrutiny lens. Counsel should audit client participation in any multi-firm ESG initiative for information-sharing or alignment on investee company strategy before those practices become investigation targets.