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October 1 - 31, 2026 57.3%
Next is No return before November 1, 2026 at 42.7%. Only Polymarket lists this market, so there is no second price to compare.
Fair chance strips out each venue’s built-in margin (its prices add up to more than 100%), then blends the venues by how much has traded there, so the outcomes add up to 100%. Best Yes price is the cheapest ask across venues, and the payout is what a winning $100 stake returns before fees. Open a row for each venue’s contract name, bid and ask, and how closely their rules match.
Prices come from our regular polls of each venue. Ages are as of when this page was built.


The top 2 outcomes on both venues, with the consensus between them. Hover for exact values.
Each venue’s resting orders for the selected outcome’s Yes contract, side by side. Top of book streams live; depth refreshes every 15 seconds.
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Enter a stake to see where it buys the most after fees, using each venue’s live order book.
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Buys at the asks resting now (taker orders), cheapest after fees first, from order-book snapshots up to 15 seconds old. Fees: Kalshi 0.07 × price × (1 − price) per share, rounded up to the cent; Polymarket 0.05 × price × (1 − price) per share (other / general rate). Fee calculator. Estimates only, not advice.
Live prediction market odds for "When will the Rhine River return to normal levels?". October 1 - 31, 2026 leads at 57.3%. Next is No return before November 1, 2026 at 42.7%. $153K has traded across 2 outcomes on Polymarket. The market is expected to resolve by Oct 31, 2026.
This market will resolve according to the date (Berlin time) when the water level at the Kaub gauge (station 25700100) on the Rhine River first reaches or exceeds 77 centimeters, as reported by the German Federal Waterways and Shipping Administration (WSV) via PegelOnline. A reading of 77 centimeters or higher is the equivalent water level (Gleichwertiger Wasserstand, GlW) for Kaub, the low-water reference mark below which shipping becomes structurally disrupted, and defines "normal levels" for this market. The resolution is triggered by the first reading at or above 77 centimeters recorded on or after the market's start, representing a rise back to the threshold. A single reading at or above 77 centimeters is sufficient to trigger resolution; transient spikes count, and the water level does not need to be sustained at or above 77 centimeters for any period. If readings for timestamps on or after November 1, 2026 (Berlin time) are available on the resolution source, and no reading at or above 77 centimeters has been recorded for a timestamp before November 1, 2026 (Berlin time), this market will resolve to "No return before November 1, 2026." If readings for timestamps on or after November 1, 2026 (Berlin time) have not been recorded on the resolution source by November 2, 2026, 11:59 PM Berlin time, and no reading at or above 77 centimeters has been recorded for a timestamp before November 1, 2026 (Berlin time), this market will resolve to "No return before November 1, 2026." The resolution source for this market will be PegelOnline (https://www.pegelonline.wsv.de/gast/stammdaten?pegelnr=25700100).
It is the price of a Yes contract that pays $1 if the outcome happens. A 14¢ price means traders put the chance near 14%. Where two venues list the same outcome, we blend their last prices, weighting the venue with more trading volume more heavily (neither counts for less than a quarter). When only one outcome can win, each venue’s prices add up to a little over 100% (its margin); the fair chance removes that margin so the outcomes add up to exactly 100%.
A Yes contract pays $1 if it wins, so at the best ask a $100 stake buys 100 ÷ ask contracts. At 18¢ that is about 555 contracts, paying $556 (5.56x) if Yes happens. Venue fees and price slippage on larger orders are not included.
Each venue has its own traders, fees and order book. Contracts can also settle on slightly different terms, which is why each row lists how closely the rules match.
Only when you can buy Yes on one venue below what someone pays for Yes on the other, after fees, and both contracts settle the same way. We show the executable bid and ask so you can check.
Venue prices refresh every few minutes, and the order book and live quotes stream continuously. Each venue’s card shows when we last observed it.