Irrational Exuberance (book)

For other uses of the term Irrational exuberance, see the Irrational exuberance (disambiguation) article.

Irrational Exuberance is a March 2000 book written by Yale University professor Robert Shiller, named after Alan Greenspan's "irrational exuberance" quote. Published at the height of the dot-com boom, it put forth several arguments demonstrating how the stock markets were overvalued at the time. Shiller was soon proven right when the Nasdaq peaked on the very month of the book's publication, and the stock markets collapsed right after.

The second edition of Irrational Exuberance published in 2005 is updated to cover the housing bubble, especially in the United States. Shiller writes that the real estate bubble may soon burst, and he supports his claim by showing that median home prices are now six to nine times greater than median income in some areas of the country. He also shows that home prices, when adjusted for inflation, have produced very modest returns of less than 1%/year.

Shiller proved right again as witnessed by the fall of the housing bubble which was in part responsible for the Worldwide recession of 2008-2009.

Contents

Quotations

"[t]he stock market has not come down to historical levels: the price-earnings ratio as I define it in this book is still, at this writing [2005], in the mid-20s, far higher than the historical average. … People still place too much confidence in the markets and have too strong a belief that paying attention to the gyrations in their investments will someday make them rich, and so they do not make conservative preparations for possible bad outcomes."

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