What Is a Cross-Venue Divergence in Prediction Markets?
A plain-English guide to cross-venue divergences — when Polymarket and Kalshi price the same question differently — and how Tickrr surfaces the gap without comparing apples to oranges.
The short answer
A cross-venue divergence is when the *same* real-world question is priced differently on two prediction-market venues. If Polymarket implies a 10% chance that Bitcoin reaches $100,000 this year and Kalshi implies 13.5%, that 3.5 percentage-point gap is a divergence.
Why gaps happen
Prediction markets are venue-specific order books with different traders, fees, and liquidity. The same event can settle at slightly different implied probabilities on each — until arbitrage and information close the gap. Watching the gap is watching two crowds disagree in real time.
The catch: it must be the same question
A gap is only meaningful if the two markets ask the *identical* question. "Will Bitcoin reach $100k by Dec 31?" is not the same as "Will Bitcoin's yearly low dip to $100k?" Tickrr only pairs verified like-for-like markets — same team, same price threshold, same meeting outcome, same resolution window — so a displayed gap is always apples-to-apples.
How Tickrr shows it
For every market with a counterpart on the other venue, Tickrr displays both implied probabilities and the gap in percentage points, with an attributed link to the source. It's presented as information — a prompt to compare both books before trusting either price — never as a recommendation to act.
Intel only. Tickrr never tells you to bet and never promises an outcome.
FAQ
Is a cross-venue divergence an arbitrage opportunity?
Not necessarily. A gap reflects different order books, fees, and liquidity; it can persist or close. Tickrr shows the gap as information for comparing venues, not as a trade recommendation.
Which venues does Tickrr compare?
Polymarket and Kalshi for verified like-for-like questions in sports, macro (Fed decisions), and crypto (Bitcoin and Ethereum price markets) — plus a de-vigged sportsbook consensus (DraftKings, FanDuel, Pinnacle & co via The Odds API) for tournament outrights.