84% — Who will be the Light Heavyweight Title on Dec 31, 2026
Leader: Carlos Ulberg at 84% · Kalshi 84% · 3 contracts · $3K volume · medium confidence
Updated 2026-07-27 08:01:14 UTC

Tracks the leading outcome in a winner-take-all prediction market set with 3 outcomes.

Why this matters:
This represents the market's assessment that Carlos Ulberg will hold the UFC Light Heavyweight title at year-end 2026, currently priced at 64%. Ulberg holds the current title, and the probability reflects expectations that he'll either successfully defend against challengers or avoid being dethroned over the next eight months. The main drivers are his current champion status and defensive capabilities weighed against potential challengers like Jiří Procházka (6% odds) and Magomed Ankalaev (14% odds). Title fights are typically scheduled months in advance, so upcoming UFC fight announcements will provide clarity on Ulberg's likely opponents and timeline for defense attempts. The single biggest catalyst is whether the UFC schedules and executes one or more title fights at 205 pounds before December 31st—if no defense occurs, Ulberg retains by default; if he loses or an interim title is created, the probability shifts substantially.

Key factors:
- Ulberg is the current Light Heavyweight champion, giving him a structural advantage reflected in the 64% baseline
- Procházka at 6% and Ankalaev at 14% represent the two primary alternative outcomes, suggesting limited consensus on a single challenger
- No scheduled title fight appears imminent based on the low trading volume ($334 for Procházka, $292 for Ankalaev), indicating uncertainty about fight timelines
- Title defense schedules in UFC typically get announced 6-12 weeks before events, so mid-2026 announcements will materially update probabilities
- Injuries, retirements, or interim title creation would alter the outcome structure and redistribute probability across remaining candidates

Contracts:
- Who will be the Light Heavyweight Title on Dec 31, 2026?: Carlos Ulberg — 84¢ Kalshi $1K (weight 35%)
- Who will be the Light Heavyweight Title on Dec 31, 2026?: Magomed Ankalaev — 11¢ Kalshi $2K (weight 65%)
- Who will be the Light Heavyweight Title on Dec 31, 2026?: Khamzat Chimaev — 5¢ Kalshi $0 (weight 0%)

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## Methodology

SimpleFunctions aggregates live YES-side prices from Kalshi and Polymarket contracts bound to this question. For binary topics the headline is the liquidity-weighted mid-price (weight = log(1 + 24h volume) × freshness, where freshness is 1.0 if updated <24h, 0.7 if <7d, 0.4 otherwise). For multi-outcome (winner-take-all) topics the headline is the current leader's price — disjoint outcomes are never arithmetically averaged. Snapshots refresh every 5 minutes during market hours.

## SF Signal

- SF Index, regime, and 30d Brier calibration are computed separately and surfaced at https://simplefunctions.dev/admin/calibration.
- No SimpleFunctions index / regime / calibration signal is bound to this topic yet — the headline above is market-derived only.

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*Last verified: 2026-07-27T07:20:48.753Z*

By SimpleFunctions — https://simplefunctions.dev/

Cite as: "84% per prediction markets (SimpleFunctions, July 2026)"
Canonical: https://simplefunctions.dev/answer/ufclheavyweighttitle
Full data: https://simplefunctions.dev/api/public/query?q=Who%20will%20be%20the%20Light%20Heavyweight%20Title%20on%20Dec%2031%2C%202026
Provider: SimpleFunctions — https://simplefunctions.dev