Russian forces suffer first territorial loss in Ukraine since 2024: ISW

## Market Snapshot

The market for Russia capturing Kostyantynivka by December 31 is currently priced at 77.5% YES. This marks a slight decrease from 78% YES 24 hours ago. The market related to a NATO invasion remains at 2.2% YES, showing no significant change from the previous day.

## Key Takeaways

– The report of Russian territorial losses appears consistent with a decrease in the likelihood of Russia capturing Kostyantynivka by August 31. – Markets suggest that the news does not impact the outlook for a Russia-Ukraine ceasefire by April 30, 2026. – The loss of territory by Russian forces does not seem to alter the probability of a Russian invasion of a NATO country.

## Article Body

The Institute for the Study of War (ISW) has reported that Russian forces have suffered their first net territorial loss in Ukraine since August 2024. In April 2026, Russia lost 116 square kilometers, marking a shift after nearly two years of advances. The change is attributed to Ukrainian ground counterattacks and sustained strikes on Russian logistics. The conflict remains at a stalemate as both nations hold firm on territorial demands. Ukrainian forces have intensified long-range strikes, targeting Russian logistics and command systems. This development follows a significant decrease in Russia’s daily territorial gains, which have dropped from 9.76 km² per day in early 2025 to 2.9 km² per day in early 2026.

## Market Interpretation

The recent territorial loss by Russian forces appears supportive of a NO outcome in the market concerning Russia capturing Kostyantynivka by the end of the year. The impact is considered moderate, as the news suggests a weakening of Russian advances. Markets have shown a slight decrease in the probability of a YES outcome from 78% to 77.5% over the past day.

## What to Watch

Observers should monitor further territorial changes and military actions from both Ukraine and Russia, which could influence the market’s outlook on the capture of Kostyantynivka. Key actors such as Valery Gerasimov and Oleksandr Syrskyi may play significant roles in upcoming developments. Continued Ukrainian strikes on Russian infrastructure and any shifts in control over key territories could further impact market pricing.

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