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Map of the Market

Created by Martin Wattenberg, the goal of this visualization was to give a quick answer to the question, "what's happening in the market?"

 

The screen is divided into rectangular tiles that represent publicly traded companies. The area of a rectangle corresponds to the market capitalization of the company, and the color tells you how the stock price has changed since the previous market close.

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Uploaded on September 2, 2009
Taken on September 2, 2009