How do InTrades prediction markets work, and are they really accurate?

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Thanks to the InTrade person who uploaded the first CNBC segment on YouTube, and fixed the initial technical problem.

I renew my asking for the second CNBC segment to be uploaded at YouTube, too. [If someone else than InTrade does it, please hit me with the YouTube URL. Thanks.]

My analysis:

  1. InTrade-TradeSports CEO John Delaney does a good job explaining the mechanism of the wisdom of crowds.
  2. They cut professor Justin Wolfers too short. It&#8217-s a nuclear disaster &#8212-once again. Justin Wolfers is an admirable and ultra friendly person, a great prediction market researcher, a good prediction market analyst, and a wonderful blogger, but his TV appearances are, so far, totally crappy. The guy needs to hire a publicist who will teach him to flatten his Australian accent and to talk straight and plain &#8212-to go to the point real quick.
  3. &#8220-It seems like someone at CNBC decided at some point that they would NEVER address the legality issue.&#8221- – Dixit Deep Throat.
  4. After the broadcast of the video shot in Ireland, the camera goes back to the TV set, and, at this point, the comments from the journalists and the guest (Steve Forbes) show that they still don&#8217-t understand fully the prediction markets. They don&#8217-t have the right facts, and their analysis is not crystal clear.
  5. Overall, a good explainer on the prediction markets &#8212-taken into account that CNBC is an entertainment media. For deeper explainers, see the Wall Street Journal, the Financial Times, or Midas Oracle.

YouTube video (the last part was censored by InTrade-TradeSports CEO John Delaney – PRECISION: the discussion between the journalists and the guest on the TV set was suppressed)

APPENDIX: CNBC video + CNBC video #2

UPDATE: The second CNBC video segment that TradeSports-InTrade CEO John Delaney does not want you to see on YouTube

INTRADE-TRADESPORTS CEO JOHN DELANEY CENSORS CNBC ON YOUTUBE.

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HE CENSORS THE END OF THE FIRST CNBC VIDEO SEGMENT TO FIT HIS MARKETING AGENDA.

HE ORDERS THAT THE SECOND CNBC VIDEO SEGMENT NOT TO BE UPLOADED ON YOUTUBE.

THE PROOF OF THE CENSORSHIP:

YouTube video (whose last part was censored by InTrade-TradeSports CEO John Delaney – PRECISION: the discussion between the journalists and the guest on the TV set was suppressed)

PLEASE, SOMEBODY, DO UPLOAD THE FULL VIDEO SEGMENT ON YOUTUBE, UNCENSORED, AND HIT ME WITH ITS URL. I&#8217-LL RE-EMBED IT FOR EVERYONE TO SEE. THERE IS NO CENSORSHIP ON MIDAS ORACLE. WE ARE NEITHER IN CHINA NOR IN IRELAND. WE ARE FREE WORLD&#8217-S CITIZENS. WE WANT TO SEE THE NAKED TRUTH, NOT DOCTORED TAPES.

The second CNBC video segment that TradeSports-InTrade CEO John Delaney does not want you to see on YouTube

APPENDIX: CNBC video + CNBC video #2

APPENDIX: THE ULTIMATE THING THAT TRADESPORTS-INTRADE CEO JOHN DELANEY WANTED TO CENSOR BUT COULDN&#8217-T THANKS TO MIDAS ORACLE.

Now that Joe Biden is the Democratic vice president nominee, what to think of Justin Wolfers August 1st column for the WSJ?

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The good point is that he dealt well with the fact that the VP prediction markets fed on primary indicators that are less reliable than the ones used for the political elections.

The bad point is that, at the time he wrote up his column, Virginia governor Tim Kaine was the favorite of the InTrade VP prediction markets. The others were, in decreasing order, Evan Bayth, Kathleen Sebelius, and then&#8230- Joe Biden. So, the critic reading his column today could say that the prediction markets are oversold to a gullible public and that a prediction market bubble ready to pop up is forming under our very nose.

– Now, we know that Barack Obama made his decision while vacationing in Hawaii (less than 2 weeks ago). That&#8217-s only from that date that the VP prediction markets started generating probabilistic predictions worth quoting. The trick is that Justin Wolfers (and the other prediction market analysts) didn&#8217-t know that, on August 1st. (PDF file)

– I don&#8217-t regret my decision not to publish about the VP prediction markets. I&#8217-d look like an idiot today.

It seems like someone at CNBC decided at some point that they would NEVER address the legality issue.

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Signed: Deep Throat.

APPENDIX: CNBC video + CNBC video #2

UPDATE: YouTube video (the last part was censored by InTrade-TradeSports CEO John Delaney – PRECISION: the discussion between the journalists and the guest on the TV set was suppressed)

UPDATE: The second CNBC video segment that TradeSports-InTrade CEO John Delaney does not want you to see on YouTube

The second CNBC video on InTrades prediction markets is up and running.

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CNBC video + CNBC video #2

In both segments, the appearance of Justin Wolfers is a nuclear disaster. They cut him ultra short. Maybe because of his strong Australian accent, I don&#8217-t know. But the end result is bad. It&#8217-s a pity. Justin Wolfers would have had many interesting things to say.

PS: InTrade people, please, put that on YouTube and tip me when it is done, so I can embed those videos.

UPDATE: YouTube video (the last part was censored by InTrade-TradeSports CEO John Delaney – PRECISION: the discussion between the journalists and the guest on the TV set was suppressed)

UPDATE: The second CNBC video segment that TradeSports-InTrade CEO John Delaney does not want you to see on YouTube

CNBC airs an upbeat explainer about InTrades prediction markets.

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Via our good friend Jason Ruspini.

CNBC video + CNBC video #2

– Please, put that on YouTube, and then give me the YouTube URL. I&#8217-ll embed the video in another post.

– Who is that guy that they will interview later on, Jason??? [UPDATE: Serge Ravitch]

My observations:

  1. Quite upbeat. Almost an advertisement for InTrade.
  2. No mention whatsoever that InTrade is illegal in America.
  3. On the website, they call InTrade a &#8220-political futures market&#8221-.
  4. The InTrade critic was Barry Ritholtz. They just showed his blog. He wrote that the trading on InTrade is &#8220-pitifully&#8221- small.
  5. The first prediction market analyst they want to hear is InTrade CEO John Delaney. The second is professor Justin Wolfers. And that&#8217-s all.
  6. Steve Forbes asked whether &#8220-this thing&#8221- (InTrade) predicted Joe Biden &#8220-weeks ago&#8221-. The answer is that InTrade predicted Joe Biden some days ago.
  7. Joe Kerner put an emphasis on liquidity, whereas the emphasis should have been on the market as the mechanism that delivers a collective verdict.

UPDATE: YouTube video (the last part was censored by InTrade-TradeSports CEO John Delaney – PRECISION: the discussion between the journalists and the guest on the TV set was suppressed)

UPDATE: The second CNBC video segment that TradeSports-InTrade CEO John Delaney does not want you to see on YouTube

Arbitrage in the InTrade Dem VP Market

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There has been an unexploited arbitrage opportunity in the Intrade Democratic VP market (&#8221-2008 Democratic VP Nominee (others upon request)&#8221-). As the attachment shows, you can sell the slate of candidates for 123.2 (just sum the bids) while you will only have to payout 100. This possibility has existed for at least three weeks, and is particularly puzzling now given that the announcement is likely to occur this week.

What is also a bit odd is that Intrade has another market (&#8221-2008 Democratic Vice-Presidential Nominee (with Field contract)&#8221-) on the same outcome which includes a catch-all field contract which does not have the same arb&#8211-again see the attachment below. It is substantially cheaper to buy the field contract in the second market than the omitted candidates (Kaine, Sebelius, Hagel, Schweitzer, Gephardt, Kerry, and others) in the first market.

Any thoughts on why this is occurring?

attachment: intradedemvp_summedbidsexceed100.pdf

Subsidizing real-money prediction markets and real-money conditional prediction markets

Should Google subsidize the Lunar X Prize contract on InTrade?

John Salvatier,

Our good friend Bo Cowgill might have already re-created those prediction markets on Google&#8217-s internal prediction exchange at a marginal cost of zero US dollar. No need for him to &#8220-subsidize&#8221- external prediction markets.

[As an appendix, I precise that I am in favor of opening the enterprise prediction markets to external traders, for some questions.]

Subsidizing prediction markets is an old Robin Hanson idea that carries quite a heavy price tag.

Conditional prediction markets is a great idea on the paper. Many people (e.g., Mike Linksvayer) like the idea. However, here is what the uncritical Robin Hanson fanboys blogging on Overcoming Whatever won&#8217-t tell you:

  • The first problem is that nobody trades those things.
  • The second problem is that subsidizing those conditional prediction markets costs an arm and a leg.
  • The third problem is that no major news media outlet has ever quoted the prediction market prices / probabilities generated by those conditional prediction markets.

Peter McCluskey could have rent a French mistress (or a French gigolo) for a full year with all the money he is spending on Robin Hanson&#8217-s idea. Or vaccinated the whole African continent against Malaria. See Peter&#8217-s comment, at the middle of the webpage, here.

Philanthropy and prediction markets are not mixing well &#8212-yet.

Regulated U.S. election markets might not be so hard.

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Based on the arguments Hedgestreet presented in its response to the CFTC on event markets, the exchange has a fairly strong justification to self-certify and begin trading election futures, soon. While most event markets trade as binary options, and the CFTC has flexible discretion over options per 7 U.S.C. § 6c(b), the Commission does not have direct discretion over approving DCM futures that conform to the Commodity Exchange Act, by 7 U.S.C. § 7a-2(c)(3). Therefore, a vote-share or electoral college future is more feasible at this moment than a winner-take-all option, although the latter is more useful as a hedging vehicle.

The major question here is what degree of trading restrictions the CFTC considers appropriate in order to fulfill the CEA&#8217-s &#8220-beyond the control&#8221- criterion of excluded commodities. There is little doubt that low position limits alongside candidate death contingencies and prohibitions on trading by candidates, their staffs, members of the electoral college, and their proxies would not satisfy the CEA in this respect. The challenge lies in enforcing such trading prohibitions. I hope that Hedgestreet is in the process of developing a framework to do so. The CFTC could also issue an interpretive letter on this specific point, without addressing the more general, challenging issues related to their jurisdiction over event markets.

If Hedgestreet&#8217-s trading restrictions are conservative and rigorous, it is improbable that such a self-certification would put Hedgestreet in bad graces with the CFTC. Alternatively, Hedgestreet could submit the futures (or options) for approval under CFTC regulation 40.3. If they do so, the CFTC has 45 days to review the products, at which point they could render a decision or extend the review process. In the meantime, however, Hedgestreet could be in communication with the CFTC and NFA concerning the development of trading restrictions, which again should be the main point of contention here, as there is no doubt that such event markets are associated with an &#8220-economic consequence&#8221-. Note that CME does not even believe that trading prohibitions are necessary, citing the role of the Fed in determining interest rates and the lack of problems there with respect to manipulation. I tend to believe that the Fed and interest rates is a special case, not to mention that it is treated differently in the CEA, and that it is prudent to impose special trading restrictions on political event contracts. Those restrictions, however, can remain flexible and be loosened over time, especially the position limits, as the market grows.

Given the current political climate in which the CFTC operates, the Commission may welcome such an active stance from Hedgestreet and other DCMs on this issue, as it will allow them to take a more passive role in the process. In the case of vote-share, electoral college and tax futures with appropriate trading restrictions, the Commission would simply be complying with the CEA by allowing such contracts. Allowing winner-take-all options would be incrementally more sensitive for the CFTC given their additional discretion in such cases. In any case, I think we have passed beyond the point where there is any material doubt that such markets are bona fide excluded commodities.

[Previously, my response to the CFTC, where I take a broader view with respect to jurisdiction and issues like gaming law preemption. Cross-posted from Risk Markets and Politics]

I am dropping BetFair from the Midas Oracle coverage of the prediction markets -until they re-establish the direct links, from their 2 frontpages, to the prediction markets on politics, finance, and the other socially valuable issues.

No GravatarNo direct to the BetFair prediction markets on politics, finance, and else.

No direct links to the BetFair prediction markets on politics, finance, and else.

No direct links to the BetFair prediction markets on politics, finance, and else.

So, this is my last post on BetFair till they fix their 2 frontpages and put back the direct links to the prediction markets on politics, finance, and the other socially valuable issues.

APPENDIX: Here&#8217-s my July 2008 message to the CFTC where I said that TradeSports and BetFair are (&#8221-were&#8221-, in the case of BetFair, now) doing good, and sending some of the liquidity (which they acquire with sports) on the socially valuable prediction markets. See also what I said to BusinessWeek.

When the CFTC look at the 2 BetFair frontpages, they will now get to the conclusion that Chris Masse is an idiot, who was probably paid to talk up BetFair.

Thank you, BetFair.

Appreciated.