Robert J. Shiller

Robert Shiller is a famous expert.

He studies how money moves. He also studies house prices. He found that people often use feelings to make choices.

This can make the market change a lot. He even warned people about big changes in the market. He won a very big prize for his work.

His ideas help us understand the world of money.

Robert J. Shiller is an American economist. He studies how money and markets work.

He has taught at Yale University for many years. Shiller is famous for his big ideas about stocks and houses.

One major idea is about how people act. Many experts thought markets were always logical. Shiller showed that markets can be very jumpy. He found that people often use emotions to make choices. This can cause prices to change in strange ways.

He also helped create ways to track house prices. This is called the Case-Shiller index. It looks at what houses sell for.

Shiller also made a tool called CAPE. It helps people see if stock prices are too high.

Shiller warned people about market bubbles. A bubble is when prices rise too fast. He said this could lead to a recession. A recession is a time when the economy slows down. In 2013, he won the Nobel Prize in Economics. This is a very high honor for his work.

Robert J. Shiller is a famous American economist. He studies how money and markets work in the real world.

Shiller has taught at Yale University since 1982. He is a Sterling Professor of Economics there. He also works with the Yale School of Management. His work helps us understand why prices change. He wants to know why markets behave the way they do.

Shiller has several big ideas about how markets work. One idea is about how people make choices. Many experts once believed in the Efficient Market Hypothesis. This idea says markets are always logical and smooth. Shiller used math to show this was not true. He found that the U.S. stock market was very jumpy. He called this the excess volatility puzzle.

He also created tools to track prices. He helped make the Case-Shiller housing price index. This index looks at recent sales of many houses. It helps people see trends in home prices. He also co-developed a tool called CAPE. This stands for Cyclically-Adjusted Price-Earnings. It uses ten years of data to smooth out changes.

This tool helps see if stocks are priced fairly.

Shiller is well known for warning about market bubbles. A bubble happens when prices rise too fast. In 2000, he wrote a book called Irrational Exuberance. He warned that the stock market might fall. In 2003, he wrote about bubbles in the housing market. He warned again in 2005 and 2006. He predicted a housing collapse in September 2007. These warnings were about the risk of a recession.

His hard work has earned him many honors. In 2013, he won the Nobel Memorial Prize in Economic Sciences. He shared this prize with Eugene Fama and Lars Peter Hansen. They won for their study of asset prices. Shiller was also named a top global thinker in 2010. He was ranked as one of the 100 most influential economists in 2008. His ideas continue to help people manage financial risk today.

Robert J. Shiller is a highly influential American economist, academic, and author. He is a Sterling Professor of Economics at Yale University. He also serves as a fellow at the Yale School of Management's International Center for Finance. Shiller's work focuses on how markets behave and how people make financial decisions. His research helps explain why prices for things like stocks and houses change over time.

Shiller is best known for challenging the Efficient Market Hypothesis, or EMH. This theory was the dominant view in economics for a long time. EMH suggests that markets are always logical and reflect all available information. It assumes that asset prices move smoothly based on their intrinsic value. Shiller used statistical models to prove this was not entirely accurate. He discovered that the U.S. stock market was much more volatile than the EMH could explain. He called this phenomenon the "excess volatility puzzle."

To study these movements, Shiller looked at how emotions affect trading. He conducted survey research to ask investors what motivated their decisions. He found that many people make trades based on emotion rather than rational calculation. This helped build the credibility of the behavioral finance school of thought. This field examines how psychological factors influence economic choices. His work showed that market movements are often erratic rather than smooth.

Shiller also developed specific tools to measure market values. One major tool is the Cyclically-Adjusted Price-Earnings ratio, known as CAPE. This measure helps investors see if the stock market is priced fairly. It works by using the average inflation-adjusted earnings from the last ten years. This ten-year average helps smooth out the effects of short-term business cycles. Another important tool is the Case-Shiller housing price index. Shiller co-developed this index to track home pricing trends across the nation. It uses a statistical technique called a repeat-sales index to value houses based on recent sales.

Throughout his career, Shiller has warned about the dangers of market bubbles. A bubble occurs when prices rise much faster than they should. In 2000, he published his book "Irrational Exuberance," which warned of a stock market bubble. He later applied these concerns to the housing market. In 2003, he co-authored a paper for the Brookings Institution about housing bubbles. He continued to warn about rising prices in 2005 and 2006. He predicted a collapse in the U.S. housing market in September 2007. This prediction came almost exactly one year before the collapse of Lehman Brothers.

These warnings were meant to highlight the risk of a recession. A recession is a period of significant economic decline. Shiller noted that bubbles could lead to a loss of confidence in businesses and consumers. He argued that high prices could lead to significant declines in the future. His research into asset prices includes stocks, real estate, and fixed income. He has studied the dynamics of how these different assets move and interact. This work is essential for understanding how financial panics can spread.

Shiller's massive contributions earned him the 2013 Nobel Memorial Prize in Economic Sciences. He shared this honor with Eugene Fama and Lars Peter Hansen. They were recognized for their empirical analysis of asset prices. Shiller has also been ranked as one of the 100 most influential economists in the world. He was named a top global thinker by Foreign Policy magazine in 2010. His ideas remain vital for policymakers and people managing financial risk today.