"[R]eading Professor Vives's prose was a joy. His explanations for why various results obtain are clear and the flow from model to model is natural. Results in later chapters are frequently related to results in earlier chapters, tying the whole book together. . . . [I]t is an excellent reference."-- Lawrence R. Glosten, Journal of Economic Literature
"Written in a simple and easy to understand language and providing an intuitive analysis of sophisticated models, this work can be a valuable reference for graduate courses in financial economics and microeconomics. Also, being thought-provoking, I find this book to be excellent reading material for researchers who work in both the asset pricing and market microstructure areas."-- Leon Zolotoy, Economic Record
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.
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