When the same event is priced differently on Polymarket and Pinnacle — and the spread holds for days rather than seconds — that's a durable mispricing. The scanner finds them automatically.
Current opportunities with the 5-dimension traffic light, per-market detail view, pendant quote, spread history. Auto-refresh every 4 hours.
Open Mispricing Lab →Polymarket markets with ≥ 14 days remaining and ≥ $50,000 volume are checked against a pendant market. Pinnacle Sportsbook (vig-adjusted via the Power method) is the universal anchor for sport outrights, US politics, geopolitics, and awards. Domain specialists — EODHD ZQ Fed-Funds futures for US rates, Finnhub Economic Calendar for macro releases — cover the non-Pinnacle domains.
Instead of a monolithic score, every opportunity is graded along five orthogonal dimensions:
Aggregate: ≥ 2 reds → red. ≥ 3 greens and no reds → green. Otherwise yellow.
Unlike classical high-frequency arbitrage, this scanner explicitly targets spreads that hold for days to weeks. Preconditions: minimum 14 days remaining, fundamental pendant source rather than cross-platform latency plays. If a mispricing sits in plain sight for two weeks, the thesis is "Polymarket prices this differently than the market does" — not "one API is 80ms faster".