Index funds now control half the US stock mutual fund market, giving the biggest funds enormous power to influence decisions and demand better returns at the companies in which they invest trillions of dollars.
But the leading U.S. index fund firms, BlackRock Inc , Vanguard Group and State Street Corp, rarely use that clout. Instead, they overwhelmingly support the decisions and pay packages of executives at the companies in their portfolios, including the worst performers, according to ..
