Comments on: BetFair Multiples http://www.midasoracle.org/2007/01/20/betfair-multiples-redux/ Prediction Markets For All Tue, 06 Jan 2009 19:57:33 +0000 http://wordpress.org/?v=2.7 hourly 1 By: BetFair is as innocent as a lamb… but their P.R. people can’t tell you that at this time. Here’s why. | Midas Oracle .ORG http://www.midasoracle.org/2007/01/20/betfair-multiples-redux/#comment-17715 BetFair is as innocent as a lamb… but their P.R. people can’t tell you that at this time. Here’s why. | Midas Oracle .ORG Fri, 28 Mar 2008 10:19:43 +0000 http://www.midasoracle.org/2007/01/20/betfair-multiples-redux/#comment-17715 [...] the facts about BetFair Malta’s combo market maker operating on the multiples (which Midas Oracle informed you about back in January 2007), you may have heard the rumor that BetFair UK (in HammerSmith, London) have been hiring what was [...] [...] the facts about BetFair Malta’s combo market maker operating on the multiples (which Midas Oracle informed you about back in January 2007), you may have heard the rumor that BetFair UK (in HammerSmith, London) have been hiring what was [...]

]]> By: With the multiples, BetFair takes the role of a bookmaker. | Midas Oracle .ORG http://www.midasoracle.org/2007/01/20/betfair-multiples-redux/#comment-17541 With the multiples, BetFair takes the role of a bookmaker. | Midas Oracle .ORG Tue, 18 Mar 2008 23:11:05 +0000 http://www.midasoracle.org/2007/01/20/betfair-multiples-redux/#comment-17541 [...] Robin Hanson: What do you know - a major betting operation now offers combinatorial betting. They say “The odds for the multiple are determined by multiplying the odds for each leg together.” If they are not careful to only allow such trading on events that are almost all independent, they can be taken advantage of. If they wanted to offer such trades on events that were dependent, they would need to use a full combinatorial technology under the hood, such as my combinatorial market scoring rule. [...] [...] Robin Hanson: What do you know - a major betting operation now offers combinatorial betting. They say “The odds for the multiple are determined by multiplying the odds for each leg together.” If they are not careful to only allow such trading on events that are almost all independent, they can be taken advantage of. If they wanted to offer such trades on events that were dependent, they would need to use a full combinatorial technology under the hood, such as my combinatorial market scoring rule. [...]

]]> By: Chris F. Masse http://www.midasoracle.org/2007/01/20/betfair-multiples-redux/#comment-17500 Chris F. Masse Mon, 17 Mar 2008 16:48:27 +0000 http://www.midasoracle.org/2007/01/20/betfair-multiples-redux/#comment-17500 New BetFair bet matching logic: http://www.midasoracle.org/2008/03/17/betfair-bet-matching-logic-2/ http://www.midasoracle.org/2008/03/15/betfair-bet-matching/ http://www.midasoracle.org/2008/03/14/betair-matching-bets/ http://www.midasoracle.org/2008/03/13/betfair-trading/ New BetFair bet matching logic:
http://www.midasoracle.org/200.....g-logic-2/
http://www.midasoracle.org/200.....-matching/
http://www.midasoracle.org/200.....hing-bets/
http://www.midasoracle.org/200.....r-trading/

]]> By: Chris Masse http://www.midasoracle.org/2007/01/20/betfair-multiples-redux/#comment-711 Chris Masse Sun, 21 Jan 2007 20:42:26 +0000 http://www.midasoracle.org/2007/01/20/betfair-multiples-redux/#comment-711 Multiple bet: "In order for Jeff to collect, first Princess Diana, then Princess Margaret then the Queen Mum and the Queen herself would need to die. If they failed to die in that order, the bet would end and Jeff would lose his £40 base payment." Sounds the bettor will make one million pounds. http://www.therockalltimes.co.uk/2002/02/11/margaret-dead.html Thanks to JC Kommer for the link. Multiple bet:

“In order for Jeff to collect, first Princess Diana, then Princess Margaret then the Queen Mum and the Queen herself would need to die. If they failed to die in that order, the bet would end and Jeff would lose his £40 base payment.”

Sounds the bettor will make one million pounds.

http://www.therockalltimes.co......-dead.html

Thanks to JC Kommer for the link.

]]> By: Robin Hanson http://www.midasoracle.org/2007/01/20/betfair-multiples-redux/#comment-707 Robin Hanson Sun, 21 Jan 2007 10:09:05 +0000 http://www.midasoracle.org/2007/01/20/betfair-multiples-redux/#comment-707 What do you know - a major betting operation now offers combinatorial betting. They say "The odds for the multiple are determined by multiplying the odds for each leg together." If they are not careful to only allow such trading on events that are almost all independent, they can be taken advantage of. If they wanted to offer such trades on events that were dependent, they would need to use a full combinatorial technology under the hood, such as my combinatorial market scoring rule. What do you know - a major betting operation now offers combinatorial betting. They say “The odds for the multiple are determined by multiplying the odds for each leg together.” If they are not careful to only allow such trading on events that are almost all independent, they can be taken advantage of. If they wanted to offer such trades on events that were dependent, they would need to use a full combinatorial technology under the hood, such as my combinatorial market scoring rule.

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