Who will be UFC Lightweight champion at the end of 2026?

Resolution Criteria

This market will resolve according to the official UFC Lightweight division champion on December 31, 2026 at 12:00 PM ET. Only official UFC division champions will count. Interim champions will not count. If the relevant belt is vacant at this market’s check time, or there is otherwise no champion in the specified division, this market will resolve to “Other”. The primary resolution source for this market will be official information from the UFC (https://www.ufc.com/athletes).

Ilia Topuria is the heaviest-backed outcome to hold the UFC Lightweight championship at the end of 2026, with Arman Tsarukyan the second most strongly supported contender. The market across 19 outcomes is heavily concentrated on these two fighters, with a small cluster of others attracting modest volume. Resolution is based on the official UFC Lightweight champion listed on ufc.com at 12:00 PM ET on 31 December 2026.

Market structure

Nineteen outcomes are listed, but volume is heavily concentrated on two fighters, creating a near two-horse race. The market resolves to whoever holds the undisputed UFC Lightweight title — interim championships explicitly excluded — as confirmed via official UFC athlete records at 12:00 PM ET on 31 December 2026. If the belt is vacant at that moment, the market resolves to 'Other', a fallback option included among the 19 outcomes.

Background

The UFC Lightweight division, contested at 155 pounds, is historically one of the organisation's most competitive weight classes. Ilia Topuria, the Georgian-Spanish former Featherweight champion, moved up to Lightweight in 2025 and captured the undisputed title, bringing significant attention to the division's future. Arman Tsarukyan, a Armenian-Russian fighter, has been a prominent contender in the lightweight rankings and is widely regarded as one of the division's most technically accomplished challengers. The division has seen frequent title changes in recent years, with fighters such as Charles Oliveira, Islam Makhachev, and Topuria each leaving distinct marks on its recent history. The outcome of any scheduled unification or title defence bouts between now and December 2026 will be decisive.

Key factors

Topuria's hold on the title depends on whether he defends it successfully or vacates it before year-end. If he moves back down to Featherweight or relinquishes the belt, a new champion would need to be crowned for the market to resolve to him. Tsarukyan's route to resolution depends on a title fight being scheduled and won before the deadline. The UFC's promotional calendar, fighter injuries, and any interim title situations — which are explicitly excluded — all affect who holds the undisputed belt on 31 December. A prolonged vacancy caused by injury, legal dispute, or scheduling delays would push resolution towards 'Other'. The volume on fighters such as Max Holloway, Justin Gaethje, and Benoît Saint Denis reflects the possibility of contender fights producing a new champion through unexpected routes. Any weight-class moves, retirements, or stripped titles before the deadline would also alter the landscape significantly.

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