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Can Google Searches Predict Stock Price Performance?

Publication: Freakonomics

October 7, 2011


A recent study in the Journal of Finance by Zhi Da and Paul Gao of the University of Notre Dame shows that data from public Google searches can be used to beat the stock market by up to ten percentage points per year. Similar findings were released last month by researchers at the University of Kansas.

The Notre Dame authors argue that the frequency of Google searches received by a stock (its SVI number) is a better, more direct method of measuring investor attention (a precursor to buying the stock) than traditional, indirect methods of measurement, such as news and advertising expense.

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