Thursday, May 24, 2007

Great article on how (yet again) prediction markets more accurate than "experts"

From NewsFutures, by way of Midas Oracle.:
After the debate, the pundits were all agreed that Royal had scored some points, and even die-hard Sarkozy fans openly worried that Royal had bested their champion. The next morning, newspapers and radio stations still conveyed the impression that Royal’s performance had probably helped her. However, the trading pattern one could observe on NewsFutures and other prediction markets told a different story altogether. The price of Sarkozy’s contract actually rose a little during the debate and just after, as evidenced in the chart at left. The next morning, this gain held, even as political pundits on the radio stations were still praising Royal’s performance. The disconnect continued until the afternoon, when the results of a poll taken just after the debate showed that it was Sarkozy that had come out on top, confirming the market’s impression.

So, once again, prediction markets performed quite well in an electoral context. This, of course, won’t come as a big surprise to anyone familiar with the field.

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