This paper examines the large, steady, and continuing growth of the Big Three index fund managers—BlackRock, Vanguard, and State Street Global Advisors. We show that there is a real prospect that index funds will continue to grow, and that voting in most significant public companies will come...

We examine the current state of the U.S. public corporation and how it has evolved over the last 40 years. After falling by 50 percent since its peak in 1997, the number of public corporations is now smaller than 40 years ago. These corporations are now much larger and over the last twenty years...

Legal records indicate that conflicts of interest -- that is, situations in which officers and directors were in a position to benefit themselves at the expense of minority shareholders -- were endemic to corporations in the late-nineteenth and early-twentieth century U.S. Yet investors...

For the first four decades of its existence the U.S. nuclear power industry was run by regulated utilities, with most companies owning only one or two reactors. Beginning in the late 1990s electricity markets in many states were deregulated and almost half of the nation's 103 reactors were sold...

We examine whether and to what extent consolidation in the U.S. health insurance industry is leading to higher employer-sponsored insurance premiums. We make use of a proprietary, panel dataset of employer-sponsored healthplans enrolling over 10 million Americans annually between 1998 and 2006...

We thank Lakshmi Aiyar, Shawn Cole, Stijn Claessens, Oded Galor, Adair Morse, Mark Rosenzweig, Jeremy Stein, as well as participants in seminars at the IMF, the NBER Political Economy, Corporate Finance, and Growth Workshops, M.I.T., Northwestern University, the University of Chicago, the WFA...

We study the evolution of profits, investment and market shares in US industries over the past 40 years. During the 1990's, and at low levels of initial concentration, we find evidence of efficient concentration driven by tougher price competition, intangible investment, and increasing...

We describe changes over time in inequality in postsecondary education using nearly seventy years of data from the U.S. Census and the 1979 and 1997 National Longitudinal Surveys of Youth. We find growing gaps between children from high- and low-income families in college entry, persistence, and...

The main purpose of this paper is to estimate an equilibrium model of private and public school competition that can generate realistic pricing patterns for private universities in the U.S. We show that the parameters of the model are identified and can be estimated using a semi-parametric...

In identifying whether universities provide opportunities for low-income students, there is a measurement challenge: different institutions face students with different incomes and preparation. We show how a hypothetical university's “relevant pool”–the students from whom it could...