Leading UK and U.S. pension investors managing more than $1 trillion have launched a campaign to stop companies using dual-class share structures that concentrate voting power in the hands of certain shareholders at the expense of others.

Launched by British railways pensions scheme Railpen and the non-profit Council of Institutional Investors (CII), others backing the Investor Coalition for Equal Votes (ICEV) include the New York City Comptroller’s Office and the Washington State Investment Board.

Companies with dual-class structures have two or more types of shares with different voting rights – usually one with greater voting rights for founders or early investors, and another for other shareholders with less voting power.

The imbalance means most investors have less control over how the company is run and can make it harder to collectively push back on issues such as executive pay and corporate strategy.

Big fund managers have fought with little success against the arrangements for years, arguing such structures – often favoured by high-growth technology firms – erode shareholder rights and undermine long-term corporate performance.

Despite this, policymakers in countries including the United States and Britain have warmed to dual-class structures as a way to attract new listings to their markets.

The group said it will lobby market participants and policymakers to make clear that proportionate shareholder voting is essential to effective stewardship and long-term corporate performance.

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