We estimate the economic surplus created by Medicare Advantage under its reformed competitive bidding rules. We use data on the universe of Medicare beneficiaries, and develop a model of plan bidding that accounts for both market power and risk selection. We find that private plans have costs...

Following a brief review of the U.S. domestic airline industry under regulation (1938-1978), we study the changes that have occurred in pricing, service, and competition in the 28 years since deregulation. We then examine some of the major public policy issues facing the industry: (a) the...

Motivated by widely publicized concerns that there are "too many" plans, we structurally estimate (and validate) an equilibrium model of the Medicare Part D market to study the welfare impacts of two feasible, similar-sized approaches for reducing choice. One reduces the maximum number of firm...

Previous studies of the announcement effects of relaxing administrative and legislative restraints show that signal events leading up to the enactment of the Financial Services Modernization Act (FSMA) increased the prices of several classes of financial-institution stocks. An unsettled question...

We examine how special interests, measured by campaign contributions from the mortgage industry, and constituent interests, measured by the share of subprime borrowers in a congressional district, may have influenced U.S. government policy toward the housing sector during the subprime mortgage...

Liquidity production is a central role of banks. We show that, under idealized conditions, high leverage is optimal for banks when there is a market premium for (socially valuable) liquid financial claims and no deviations from Modigliani and Miller (1958) due to agency problems, deposit...

We examine the determinants of congressional voting behavior on two of the most significant pieces of federal legislation in U.S. economic history: the American Housing Rescue and Foreclosure Prevention Act of 2008 and the Emergency Economic Stabilization Act of 2008. We find evidence that...

We analyze the effectiveness of consumer financial regulation by considering the 2009 Credit Card Accountability Responsibility and Disclosure (CARD) Act in the United States. Using a difference-in- differences research design and a unique panel data set covering over 160 million credit card...

We estimate a structural model of the market for automatic teller machines (ATMs) in order to evaluate the implications of regulating ATM surcharges on ATM entry and consumer and producer surplus. We estimate the model using data on firm and consumer locations, and identify the parameters of the...

The merger of Fleet and BankBoston in September 1999 resulted in a regional New England lending market in which only one large, universal bank remained. We explore the extent to which that merger resulted in monopoly rents for the combined entity in some niches within the regional loan market....