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Eugene Fama

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Eugene Fama is a very important economist from America. He was born in Boston, Massachusetts, on February 14, 1939. His parents were Angelina and Francis Fama. All of his grandparents moved to America from Italy.

Fama went to Tufts University for his first degree. He studied Romance Languages and graduated in 1960. He was even a great student-athlete there. Later, he moved to the University of Chicago. He earned his PhD there in economics and finance. He has taught at that university for his whole career.

Fama is often called the "father of modern finance." This is because his ideas helped build how we study money.

He studied how stock prices move up and down. In 1965, he wrote a paper about this. He found that short-term price changes are like a "random walk." This means they are very hard to predict.

He also looked at how prices react to new events. He used a special database called CRSP for this work. His research helped many people understand how markets behave.

One of his biggest ideas is the efficient-market hypothesis. This idea explains how information changes stock prices.

Fama said there are three ways a market can be efficient. First is weak efficiency, which uses old price data. Second is semi-strong efficiency, which uses all public news. Third is strong efficiency, which uses even private information. He also talked about the "joint hypothesis problem." This is a hard puzzle for researchers to solve. It makes it tricky to know if a model is wrong or if the market is behaving strangely.

Fama also worked with another economist named Kenneth French. Together, they created helpful ways to measure stock returns.

In 1993, they made a three-factor model. It looked at market size and value to explain returns. Later, in 2015, they made a five-factor model. This new version added profitability and how companies invest. These models are now used by many experts to check how well investments are doing. They help explain patterns that used to seem like mysteries.

Because of his hard work, Fama received many honors. In 2013, he won the Nobel Memorial Prize in Economic Sciences. He shared this prize with Robert J. Shiller and Lars Peter Hansen.

A project in 2019 ranked him as the 9th most influential economist ever. Even his university named a student house after him. Fama also works with a firm called Dimensional Fund Advisors. This company manages a huge amount of money, about $786 billion. His life shows how studying math and money can change the world.

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