Prediction Market Traders Accept Worse Odds Than Casino Slot Machines
By
jonbecker
The bagel they save for the regulars. Don't skim, savour.
Summary
The article examines the surprising phenomenon in prediction markets where traders accept extremely poor odds, with some contracts returning as low as 43 cents on the dollar compared to casino slot machines' 93 cents. It explores how prediction markets, which theoretically should aggregate information efficiently, instead see participants willingly accept negative expected value to bet on their convictions, challenging traditional market efficiency assumptions.
Key quotes
· 4 pulledSlot machines on the Las Vegas Strip return about 93 cents on the dollar. This is widely considered some of the worst odds in gambling.
Yet on Kalshi, a CFTC-regulated prediction market, traders have wagered vast sums on longshot contracts with historical returns as low as 43 cents on the dollar.
Thousands of participants are voluntarily accepting expected values far lower than a casino slot machine to bet on their convictions.
The efficient market hypothesis suggests that asset prices should perfectly aggregate all available information. Prediction markets theoretically provide the purest test of this hypothesis.
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