Prediction Markets: A new Special Interest Group on forecastingprinciples.com

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The marketsforforecasting.com Special Interest Group provides a resource for researchers and practitioners who are interested in the field of prediction markets.

In keeping with the objectives of forecastingprinciples.com, this SIG will present research findings that support evidence-based principles. In particular, the site covers research that provides guidelines, prescriptions, rules, conditions, action statements, or advice about what to do in given situations.

The current site is a beta-version. To further develop the content, we ask for your contributions!

The material for this special interest group is maintained by Andreas Graefe. Please contact him for further information, and with corrections, additions, or suggestions for these pages.

Chris Masses pragmatism

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  1. Supporting the development of big, for-profit, generalist prediction exchanges (which get most of their revenues from sports prediction markets)-
  2. Asking the biggest prediction exchanges to organize socially valuable prediction markets.

Don&#8217-t you rate me as a &#8220-pragmatist&#8221-, doc?

Prediction Markets in the Classroom: Inkling Markets

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hile prediction markets have been in the spotlight this year, they are still unfamiliar to many folks. As one small step towards improving their visibility, along with my colleague James Lemieux I ran a prediction market at the University of Kansas School of Business. The markets ran for three and a half months and almost all traders were undergraduate business majors (you can see the very end stages of the market at: http://kufin400.inklingmarkets.com, username: myfoxkc and password: myfoxkc).

These markets were quite popular. The 475 traders made over 27,000 transactions in the 139 available markets. As a matter of reference, that is about 200 transactions per market while in Google&#8217-s market this ratio is 260.

There was a mix of both socially redeeming topics (issues of interest to the Business School such as how many internships the undergrads would get this school year) and others designed to attract interest (politics, sports, entertainment, finance). I was surprised to see that passions&#8211- and trade volume&#8211- ran quite high even in the more serious markets. For example, one contract&#8217-s expiry was based on whether the XM-Sirius merger would be consummated by March. When the DOJ announced its approval at the end of that month, there was only a small price increase. As the comments below suggest, this was not because the traders were asleep at the wheel but rather because they had a good understanding of the regulatory environment.

Inkling Markets provided the platform for our markets (if you are unfamiliar with Inkling, they have active public markets which you can sample). Inkling&#8217-s software and support is really ideal for classroom markets. There are nice features for both the people running the markets (James and I) as well as for traders (the students).

For the market admin:

– it is a snap to set-up and administer new contracts

– Adam Siegel and Nate Kontny are very responsive to questions, often responding within the hour

For traders:

– an intuitive trade interface, which is accessible even for those without experience with financial markets (though this can be a drawback if you would also like students to become familiar with order books)

– lots of goodies (customizable profile pages, market-specific discussion boards, graphs) leads students to visit the market a lot

– the daily/weekly top traders list encourages participation

I would strongly recommend others give prediction markets in the classroom a try. I found them to be both a great pedagogical tool and also one which the students really, really like. Students learned first hand about the role of information discovery as well as the biases often seen in prediction markets (though I will add it was difficult to illustrate the home town bias given the success of the athletic teams at my school this year). Feel free to get in touch with me if you have questions about how to set-up your own classroom markets.

ABC 20/20 featuring InTrade on May 9, 2008 – 10:00 pm ET

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ABC 20/20 featuring InTrade on May 9, 2008 &#8212- 10:00 pm ET

Foretelling the Future: Online Prediction Markets &#8212- (4 pages in all)

Now Intrade is more than just a place where people win or lose money making bets. It turns out that the share prices on Intrade can be accurate predictors of the future. Intrade attracts a large and diverse crowd of bettors, and because each participant puts their money on the line, they may be more likely to make careful decisions. As a result of the collective intelligence of more than 77,000 bettors on Intrade [*], the prices on the site may be a good way to predict the outcome of current events &#8212- more accurate than some polls and pundits.

[*] and thanks to InTrade&#8217-s market mechanism&#8230- :-D

UPDATE:

ABC video

YouTube video

Previous blog posts by Chris F. Masse:

  • Become “friend” with me on Google E-Mail so as to share feed items with me within Google Reader.
  • Nigel Eccles’ flawed “vision” about HubDub shows that he hasn’t any.
  • How does InTrade deal with insider trading?
  • Modern Life
  • “The Beacon” is an excellent blog published by The Independent Institute.
  • The John Edwards Non-Affair… is making Memeorandum (twice), again.
  • Prediction Markets = marketplaces for information trading… and for separating the wheat from the chaff.

Final InTrade v. Zogby Showdown Results

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Superdelegate chicanery notwithstanding, Obama has won his party&#8217-s nomination, so my head-to-head contest between a major pollster (Zogby) and major prediction market (Intrade) will be coming to a close.

Unsurprising to those who know a little bit about the scholarship, economics, and/or track record of prediction markets, the traders of Intrade provided us much better data this election season than the respondents to the Zogby polls.

Standings
WinsLossesTiesPctContenderAvg Eve Prob
731159.5%Intrade71.3%
371140.5%Zogby40.7%

Schedule
ScoreDateStatePartyIntradeZogbyWinnerIntrade PctZogby Pct
7-3-116-MayINDemClinton2-way-tieClinton85%42%
6-3-116-MayNCDemObamaObamaObama90%50%
6-3-1022-AprPADemClintonClintonClinton82%47%
6-3-94-MarOHDemClinton2-way-tieClinton70%45%
5-3-94-MarTXDemObama2-way-tieClinton57%44%
5-2-95-FebNJRepMcCainMcCainMcCain96%52%
5-2-85-FebNJDemClinton2-way-tieClinton67%43%
4-2-85-FebNYRepMcCainMcCainMcCain98%53%
4-2-75-FebGADemObamaObamaObama96%48%
4-2-65-FebMODemObamaObamaObama63%47%
4-2-55-FebCARepMcCainRomneyMcCain56%40%
3-2-55-FebCADemObamaObamaClinton52%46%
3-2-429-JanFLRepMcCain2-way-tieMcCain51%33%
2-2-426-JanSCDemObamaObamaObama90%38%
2-2-319-JanSCRepMcCainMcCainMcCain56%29%
2-2-219-JanNVDemObamaClintonClinton54%42%
2-1-215-JanMIRepMcCain2-way tieRomney54%27%
2-0-28-JanNHDemObamaObamaClinton91%39%
2-0-18-JanNHRepMcCainMcCainMcCain82%34%
2-0-03-JanIADemObama3-way tieObama54%28%
1-0-03-JanIARepHuckabee2-way tieHuckabee53%28%

Lord willing, I will have another showdown season, but will most likely choose another pollster. Whereas Intrade listed contracts and probabilities for every state primary, Zogby only provided election eve updates for only 21 of the 87 held to date. Rasmussen stands out as a worthy pollster, but I would be happy with any candidate referrals from my readers as well.

Cross-posted from Caveat Bettor.

Previous blog posts by Caveat Bettor:

  • Land-Ocean year-to-date temperatures 0.35 Celsius over baseline
  • Intrade lists Global Warming Contracts!
  • Intrade beats Zogby on Super Tuesday
  • Super Tuesday Showdown: Intrade v. Zogby
  • The Democrat SC Showdown: Intrade v. Zogby
  • Zogby beats Intrade in predicting Nevada caucus winner Clinton.
  • The GOP SC and Dem NV Showdown: Intrade v. Zogby

Third Workshop on Prediction Markets, July 9 in Chicago

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Please join us at the Third Workshop on Prediction Markets, in Chicago on the afternoon of July 9, 2008. We plan academic talks, an industry panel, and open discussion. Participation is open to anyone, and we hope to be as flexible as possible in allocating speaking time. See the workshop website or the full Call for Contributions and Participation for details.

Hey, mister the pragmatist, how come you never informed the readers of your (otherwise, very smart) blog that CFTC-regulated HedgeStreet bellied after 3 years, burning in vain $24.9 million?

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Wouldn&#8217-t that hard fact (the $24.9 million that disappeared in flames) be worthy of being cited, for the sake of &#8220-pragmatism&#8221-, on a blog written up by a &#8220-pragmatist&#8221-?

So, my good doctor, when is it that you&#8217-re going to tell the truth to your readers?

UPDATE: See his comment, just below&#8230-

Who is behind the CFTCs request?

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People close to the CFTC say that one reason this is coming now is that the Chairman (who will be retiring soon) wants a legacy &#8212-something he leaves behind that is innovative and that he can be known for pioneering. If that&#8217-s the case, it means that nobody is pressuring them.

Signed: Deep Throat

&#8230- in response to that.

When Chris Masse (with typo) pinches Henry Blodgets nose

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Previous blog posts by Chris F. Masse:

  • We could use a US Gambling And Betting Commission, but the best would be to have prediction exchanges (modeled after BetFair) that alert the sports bodies about any suspicions.
  • Did Patri Friedman misread BetFair?
  • BetFair makes the frontpage of the New York Times –as the White Knight of sports. — Note that the term “prediction markets” is never pronounced. — TradeSports is not mentioned, but the last paragraph of the article suggests that all Internet sports betting should be legal and regulated.
  • In the prediction market timeline, it’s 00:05 am. The most interesting developments of the field of prediction markets are yet to come. Join the Midas Oracle Project.
  • How Midas Oracle got started off…
  • Google Search thinks that Midas Oracle has more value than the New York Times and Freakonomics when the topic is Google’s enterprise prediction markets. How do you like that, Bo? It’s “cool”, no?
  • Using Prediction Markets to Track Information Flows: Evidence from Google — VIDEO — Bo Cowgill on Google’s enterprise prediction markets — O’Reilly Money:Tech