US economists Fama, Hansen and Shiller win Nobel for their work in explaining asset prices

  • Article by: KARL RITTER , Associated Press
  • Updated: October 14, 2013 - 3:10 PM

STOCKHOLM — Three American professors won the Nobel prize for economics Monday for shedding light on how stock, bond and house prices move over time— work that's changed how people around the world invest.

Two of the winners — Eugene Fama, 74, and Lars Peter Hansen, 60 — teach at the University of Chicago. The third, Robert Shiller, 67, is a professor at Yale University and is well-known as a creator of the well-known Case-Shiller index of home prices.

Hansen received his Ph.D. in economics from the University of Minnesota in 1978 after receiving a B.S. in math from Utah State University.

On hearing the news, University of Minnesota President Eric Kaler issued a statement saying that Hansen’s Nobel prize “recognizes his groundbreaking work, and it confirms the exceptional strength of a University of Minnesota education.”

Shiller, a professor at Yale University, began his career at the University of Minnesota as an assistant professor from 1972-74.

The three economists were honored for separate research that collectively expanded the understanding of asset prices.

Beginning in the 1960s, Fama showed that prices change so quickly and efficiently to reflect new information that investors can't outperform markets in the short term. This was a breakthrough that helped popularize index funds, which invest in broad market categories instead of trying to pick individual winners.

Two decades later, Shiller reached a separate conclusion: That over the long run, markets can often be irrational, subject to booms and busts and the whims of human behavior. The Royal Swedish Academy of Sciences noted that the two men's findings "might seem both surprising and contradictory."

Hansen developed a statistical method to test theories of asset pricing.

The three economists shared the $1.2 million prize, the last of this year's Nobel awards to be announced.

"Their methods have shaped subsequent research in the field and their findings have been highly influential both academically and practically," the academy said.

Monday morning, Hansen said he received a phone call from Sweden while on his way to the gym. He said he wasn't sure how he'll celebrate but said he was "still working on taking a deep breath."

Shiller, famous for having warned against the bubbles in technology stocks and housing that burst over the past two decades, said he responded with disbelief when he received a phone call about the Nobel.

"People told me they thought I might win," Shiller told The Associated Press. "I discounted it. Probably hundreds have been told that."

Of the three winners, Fama was the first to expand the knowledge of how asset prices move. His work helped revolutionize investing by illustrating how hard it was to predict the movement of individual stock prices in the short run. It was a finding that spurred wider acceptance of index funds as an investment tool.

Shiller showed that in the long run, stock and bond markets tend to behave more irrationally than economic fundamentals would suggest. That encouraged the creation of institutional investors, such as hedge funds, that take bets on market trends.

In the late 1990s, Shiller argument the stock market was overvalued.

"And lo and behold, he was proven right" when the dot-com bubble burst in 2000, said Nobel committee secretary Peter Englund.

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