In this timely and prescient update of his celebrated 2000 bestseller, Robert Shiller returns to the topic that gained him international fame: market volatility. Having predicted the stock market collapse that began just one month after the first edition was published, he now expands the book to cover other markets that have become volatile, particularly the recently red-hot housing market. He includes a full chapter on domestic and international housing prices in historical perspective.

Shiller amasses impressive evidence to support his argument that the recent housing market boom bears many similarities to the stock market bubble of the late 1990s, and may eventually be followed by declining home prices for years to come. After stocks plummeted when the bubble burst in 2000, investors moved their money into housing. This precipitated the inflated real estate prices not only in America but around the world, Shiller maintains. Hence, irrational exuberance did not disappear—it merely reappeared in other settings.

Building on the original edition, Shiller draws out the psychological origins of volatility in financial markets, this time folding real estate into his analysis. He broadens the evidence that investing in capital markets of all kinds in the modern free-market economy is inherently unstable—subject to the profoundly human influences captured in Alan Greenspan’s now-famous phrase, “irrational exuberance.” As was true of its predecessor, the second edition of Irrational Exuberance is destined to be widely read, discussed, and debated.

“A dose of realism that serious investors will ignore at their peril.” —The Wall Street Journal

“The point of Irrational Exuberance is not to help investors dump their houses before the current exuberance fades. It is to deepen our understanding of the events we are watching as one bubble gives birth to another.” —The International Herald Tribune

“Irrational Exuberance [is] a dazzling, richly textured, provocative book . . . offering a cogent statement of the bears’ view of events to come. Shiller is not merely a bear—he is a grizzly.” —BusinessWeek

As Robert Shiller's new 2009 preface to his prescient classic on behavioral economics and market volatility asserts, the irrational exuberance of the stock and housing markets has been ended by an economic crisis of a magnitude not seen since the Great Depression of the 1930s. As we all, ordinary Americans and professional investors alike, crawl from the wreckage of our heedless bubble economy, the shrewd insights and sober warnings, and hard facts that Shiller marshals in this book are more invaluable than ever.

The original and bestselling 2000 edition of Irrational Exuberance evoked Alan Greenspan's infamous 1996 use of that phrase to explain the alternately soaring and declining stock market. It predicted the collapse of the tech stock bubble through an analysis of the structural, cultural, and psychological factors behind levels of price growth not reflected in any other sector of the economy. In the second edition (2005), Shiller folded real estate into his analysis of market volatility, marshalling evidence that housing prices were dangerously inflated as well, a bubble that could soon burst, leading to a string of bankruptcies and a worldwide recession. That indeed came to pass, with consequences that the 2009 preface to this edition deals with.

Irrational Exuberance is more than ever a cogent, chilling, and astonishingly far-seeing analytical work that no one with any money in any market anywhere can afford not to read-and heed.

Robert J. Shiller is the Stanley B. Resor Professor of Economics at Yale University. He is the recipient of the 2000 Commonfund Prize, awarded for Best Contribution to Endowment Management Research, for Irrational Exuberance. He is also the author of Market Volatility and Macro Markets, which won the 1996 Paul A. Samuelson Award.