The ways financial analysts, traders, and other specialists use information and learn from each other are of fundamental importance to understanding how markets work and prices are set. This graduate-level textbook analyzes how markets aggregate information and examines the impacts of specific market arrangements--or microstructure--on the aggregation process and overall performance of financial markets. Xavier Vives bridges the gap between the two primary views of markets--informational efficiency and herding--and uses a coherent game-theoretic framework to bring together the latest results from the rational expectations and herding literatures. Vives emphasizes the consequences of market interaction and social learning for informational and economic efficiency. He looks closely at information aggregation mechanisms, progressing from simple to complex environments: from static to dynamic models; from competitive to strategic agents; and from simple market strategies such as noncontingent orders or quantities to complex ones like price contingent orders or demand schedules. Vives finds that contending theories like informational efficiency and herding build on the same principles of Bayesian decision making and that "irrational" agents are not needed to explain herding behavior, booms, and crashes. As this book shows, the microstructure of a market is the crucial factor in the informational efficiency of prices. Provides the most complete analysis of the ways markets aggregate information Bridges the gap between the rational expectations and herding literatures Includes exercises with solutions Serves both as a graduate textbook and a resource for researchers, including financial analysts

The most important book on antitrust ever written. It shows how antitrust suits adversely affect the consumer by encouraging a costly form of protection for inefficient and uncompetitive small businesses.

This book provides a comprehensive introduction to modern auction theory and its important new applications. It is written by a leading economic theorist whose suggestions guided the creation of the new spectrum auction designs. Aimed at graduate students and professionals in economics, the book gives the most up-to-date treatments of both traditional theories of 'optimal auctions' and newer theories of multi-unit auctions and package auctions, and shows by example how these theories are used. The analysis explores the limitations of prominent older designs, such as the Vickrey auction design, and evaluates the practical responses to those limitations. It explores the tension between the traditional theory of auctions with a fixed set of bidders, in which the seller seeks to squeeze as much revenue as possible from the fixed set, and the theory of auctions with endogenous entry, in which bidder profits must be respected to encourage participation.

Addressing the challenge of covering heath care expenses—while minimizing economic risks. Moral hazard—the tendency to change behavior when the cost of that behavior will be borne by others—is a particularly tricky question when considering health care. Kenneth J. Arrow’s seminal 1963 paper on this topic (included in this volume) was one of the first to explore the implication of moral hazard for health care, and Amy Finkelstein—recognized as one of the world’s foremost experts on the topic—here examines this issue in the context of contemporary American health care policy. Drawing on research from both the original RAND Health Insurance Experiment and her own research, including a 2008 Health Insurance Experiment in Oregon, Finkelstein presents compelling evidence that health insurance does indeed affect medical spending and encourages policy solutions that acknowledge and account for this. The volume also features commentaries and insights from other renowned economists, including an introduction by Joseph P. Newhouse that provides context for the discussion, a commentary from Jonathan Gruber that considers provider-side moral hazard, and reflections from Joseph E. Stiglitz and Kenneth J. Arrow. “Reads like a fireside chat among a group of distinguished, articulate health economists.” —Choice

The first volume of this wide-ranging Handbook contains original contributions by world-class specialists. It provides up-to-date surveys of the main game-theoretic tools commonly used to model industrial organization topics. The Handbook covers numerous subjects in detail including, among others, the tools of lattice programming, supermodular and aggregative games, monopolistic competition, horizontal and vertically differentiated good models, dynamic and Stackelberg games, entry games, evolutionary games with adaptive players, asymmetric information, moral hazard, learning and information sharing models.

A Financial Times Book of the Year A ProMarket Book of the Year “Superbly argued and important...Donald Trump is in so many ways a product of the defective capitalism described in The Great Reversal. What the U.S. needs, instead, is another Teddy Roosevelt and his energetic trust-busting. Is that still imaginable? All believers in the virtues of competitive capitalism must hope so.” —Martin Wolf, Financial Times “In one industry after another...a few companies have grown so large that they have the power to keep prices high and wages low. It’s great for those corporations—and bad for almost everyone else.” —David Leonhardt, New York Times “Argues that the United States has much to gain by reforming how domestic markets work but also much to regain—a vitality that has been lost since the Reagan years...His analysis points to one way of making America great again: restoring our free-market competitiveness.” —Arthur Herman, Wall Street Journal Why are cell-phone plans so much more expensive in the United States than in Europe? It seems a simple question, but the search for an answer took one of the world’s leading economists on an unexpected journey through some of the most hotly debated issues in his field. He reached a surprising conclusion: American markets, once a model for the world, are giving up on healthy competition. In the age of Silicon Valley start-ups and millennial millionaires, he hardly expected this. But the data from his cutting-edge research proved undeniable. In this compelling tale of economic detective work, we follow Thomas Philippon as he works out the facts and consequences of industry concentration, shows how lobbying and campaign contributions have defanged antitrust regulators, and considers what all this means. Philippon argues that many key problems of the American economy are due not to the flaws of capitalism or globalization but to the concentration of corporate power. By lobbying against competition, the biggest firms drive profits higher while depressing wages and limiting opportunities for investment, innovation, and growth. For the sake of ordinary Americans, he concludes, government needs to get back to what it once did best: keeping the playing field level for competition. It’s time to make American markets great—and free—again.