Will Russia capture Kostyantynivka by August 31?
No meaningful repricing — the probability is steady.
The pricing has partial support: healthy trading volume and market depth, a tight spread.
How credible was the move?
Three separate questions — a move can be genuine while the latest price is still settling. Methodology →
Move validity
Is the move backed by real trading and depth?
ModerateThe pricing has partial support: healthy trading volume and market depth, a tight spread.
Consensus stability
Has the market settled at the new probability?
StableThe probability has held near its current level over the past several hours.
Contract clarity
Will the rules resolve without ambiguity?
HighThe resolution rules are relatively specific, with a named source and a defined deadline.
From the latest trade tape (most recent 200 prints) — a live activity sample, not a lifetime total.
What this market actually measures
This market will resolve to “Yes” if, according to the ISW map, Russia captures the Kostyantynivka railroad station located on Pravoberezhna vulytsia by August 31, 2026 at 11:59 PM ET. The railroad station will be considered captured if any part of the train station icon is shaded red on the ISW map (https://storymaps.arcgis.com/stories/36a7f6a6f5a9448496de641cf64bd375) by the resolution date.
This summary shows the opening of the venue's official rules. ProbCast has not yet generated an independent plain-English interpretation for this contract — review the full rules before relying on it.
View full official resolution rules
This market will resolve to “Yes” if, according to the ISW map, Russia captures the Kostyantynivka railroad station located on Pravoberezhna vulytsia by August 31, 2026 at 11:59 PM ET. The railroad station will be considered captured if any part of the train station icon is shaded red on the ISW map (https://storymaps.arcgis.com/stories/36a7f6a6f5a9448496de641cf64bd375) by the resolution date. If the area is not shaded red by August 31, 2026, 11:59 PM ET, the market will resolve to “No”. For any change on the ISW map to qualify for this market’s resolution, the relevant shading indicating Russian control must persist through the next full ISW daily update cycle. If ISW skips a day, shading must persist until the next finalized ISW update is published, regardless of the date. Any continuous shading which reflects either “Assessed Russian Control”, “Assessed Russian Advance In Ukraine”, or “Assessed Russian Gains in the Past 24 Hours” will qualify. “Assessed Russian Infiltration Areas in Ukraine” will not qualify. If Russia comes into control of this territory as a result of a negotiated settlement, this will qualify for a 'Yes' resolution, regardless of if it is shaded red in the ISW map. An announcement of a negotiated settlement which gives Russia de jure control will not qualify. Actual control must be established. Once Russia captures the railroad station, any subsequent loss of control will not be considered towards the resolution of this market. Train Station Location: https://polymarket-upload.s3.us-east-2.amazonaws.com/Kostyantynivka3.jpg Train Station Location in Kostyantynivka: https://polymarket-upload.s3.us-east-2.amazonaws.com/Kostyantynivka2.jpg Kostyantynivka Location: https://polymarket-upload.s3.us-east-2.amazonaws.com/Kostyantynivka1.jpg Location on Google maps: https://maps.app.goo.gl/hZ6ch5jVRvkNFY317 The primary resolution source for this market will be the ISW Ukraine map. If the ISW map is rendered unavailable, information from DeepStateMap (https://deepstatemap.live/) may be used. If information from both the ISW and DeepStateMap are rendered permanently unavailable, a consensus of credible reporting may be used. Note: Any temporary glitches or errors in the map which will not be considered.
What could move this market next?
- The market's deadline arrivesAugust 31, 2026 at 8:00 AM ET
The contract must resolve based on what has happened by this date.
Derived from the contract's own mechanics as of Aug 19, 2:37 AM ET. ProbCast does not list scheduled meetings, announcements, or data releases it cannot verify.
Probability by deadline
The same event, priced across deadline contracts on this venue.
The market prices the Sep 30 and Dec 31 deadlines almost identically.
Advanced analysis (experimental)
Research signals — these models are still accumulating the history needed for full validation, and they can disagree with the headline read. Model confidence: low · expected error ±15 pts.
What's happening
Thin book and/or wide spread. Small orders can move this price disproportionately, so any single print is noisy and easily overread.