Yes, U.S. index mutual funds have grown to huge size, with their holdings doubling from 4.5% of total U.S. stock-market value in 2002 to 9% in 2009, and then almost doubling again to more than 17% in 2018. Even that penetration understates the role of mutual fund managers, as they also offer actively managed funds, and their combined assets amount to more than 35% of the shares of U.S. corporations. If historical trends continue, a handful of giant institutional investors will one day hold voting control of virtually every large U.S. corporation. Public policy cannot ignore this growing dominance, and consider its impact on the financial markets, corporate governance, and regulation. These will be major issues in the coming era. https://www.wsj.com/articles/bogle-...1?cx_testId=0&cx_testVariant=cx_1&cx_artPos=0