taw comments on Arbitrage of prediction markets - Less Wrong

6 Post author: taw 04 December 2009 10:29PM

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Comment author: RobinHanson 05 December 2009 04:37:44AM 10 points [-]

Intrade and IEM don't usually pay interest on deposits, so for long term bets you can win the bet and still lose overall. The obvious solution is for them to pay such interest, but then they'd lose a hidden tax many customers don't notice.

Comment author: taw 05 December 2009 09:21:26AM 1 point [-]

That wouldn't really fix the problem, as interests paid on deposits would be much smaller than interest you have to pay for loaning collateral.