When do prophets profit in prediction markets?
Quick summary
arXiv:2607.06166v3 Announce Type: replace Abstract: Prediction markets aggregate dispersed beliefs into prices that act as probabilistic forecasts of uncertain events. Classical theory establishes how a better-than-market forecast can yield positive trading profit. However, it hinges crucially on the specific automated market maker (AMM) design, and is not applicable to popular exchanges today which are based on central limit order books. This paper fills that gap. For any prediction market and any proper scoring rule $S$, we exhibit a ``proper'' betting strategy that depends only on the forec
Key takeaways
- arXiv:2607.06166v3 Announce Type: replace Abstract: Prediction markets aggregate dispersed beliefs into prices that act as probabilistic forecasts of uncertain events.
- Classical theory establishes how a better-than-market forecast can yield positive trading profit.
- However, it hinges crucially on the specific automated market maker (AMM) design, and is not applicable to popular exchanges today which are based on central limit order books.
Why it matters
“When do prophets profit in prediction markets?” highlights the need for repeatable measurement rather than a single impressive demonstration. Independent validation across datasets and clearly stated limitations determine whether a result can guide product decisions.
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