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Buckets and the curve

A market splits its outcome into buckets of equal width. Together the buckets form a distribution: the market’s current view of where the number will land. Buying a bucket raises its share of the curve and its price; the rest adjust so the curve always sums to one. You take a position on one bucket or a band of adjacent buckets. The band is your range.
Distribution curve with a highlighted range and its payoff

Payoff scales with precision

The tighter your range, the larger the payoff, because fewer outcomes pay it. At a uniform prior:
  • 1 bucket of 10 pays 10x.
  • 2 buckets of 10 pay 5x.
  • 5 buckets of 10 pay 2x.
Payoff = N / k, for k of N buckets, at uniform prior. As others trade, the prior shifts away from uniform and the live payoff moves with it. The app always shows the live number before you confirm.

Reading the distribution

Live bucket distribution with a selected range and implied probability
A tall bucket is where the market expects the outcome. A flat distribution means low conviction; a peaked one means the crowd agrees. Your edge is a range you believe is underpriced relative to where it will actually land. See reading the curve.