Within the world of corporate governance, there has hardly been a more important recent development than the rise of the ‘Big Three’ asset managers—Vanguard, State Street Global Advisors, and BlackRock. Due to the popularity of index funds and ETFs, these asset managers now represent some of the largest owners of US public companies.  And because of their size and corporate governance influence, a robust scholarly literature has identified the promises and perils of Big Three ownership. In a new book chapter, we identify a series of proxies, or shorthand terms, that first appeared in the foundational works in this literature and have become commonplace in both scholarly articles and the financial press. We further show how this shorthand can contribute to misperceptions and confusion.

The first shorthand is the use of the term ‘Big Three’ to refer to three distinct asset managers. Each of the Big Three manage vast amounts of money in indexed products—amounts that have grown dramatically thanks to the rising popularity of index-based investing. However, there are important differences between each asset manager, both in terms of the composition of the assets they manage and their own institutional structure and operations (and our chapter describes these differences in detail). As such, it does not always make sense to lump these institutions together. The focus on these three institutions has also limited scholarly focus in important ways. For example, the term excludes Fidelity, even though it is larger than State Street in terms of AUM and has also benefitted from a steady inflow of investor funds over the past several years.

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