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Henry B. Tippie College of Business

Iowa Electronic Markets

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The Iowa Electronic Markets is a futures market run for research and teaching purposes. Traders can buy and sell real-money contracts based on their belief about the outcome of an election or other event. Using this "wisdom of crowds," the price of a contract at any given time is a forecast of the outcome.

Iowa Electronic Markets > About IEM > Previous Market Performance

What is the IEM
Previous Market Performance
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Contacting the IEM

Previous Market Performance

Below are links to graphical representations of the performance from previous markets.

IEM and Poll Accuracy, 2008 Presidential Race
Prices Graph From the 1996 Presidential Winner Takes All Market
Prices Graph From the 1996 Republican Convention Market
Gallup vs. IEM Results From the 1996 Presidential Vote Share Market
IEM Accuracy Compared to Polls
IEM Average Absolute Prediction Error

The University of Iowa

Iowa Electronic Markets

108 John Pappajohn Business Building
University of Iowa
iem@uiowa.edu.

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