SimpleFunctions
10 contractsKalshi + Polymarketrefreshed 1 min ago

US Montalbanaise vs Racing 92 Winner

Liquidity-weighted aggregate sits at 28% across 10 contracts. Kalshi at 25%, Polymarket at 49% — a 24pp cross-venue gap.

Implied probability

28%
0%50%100%

Kalshi

25%

9 contracts

Polymarket

49%

1 contract

Cross-venue gap

24pp

wide divergence

24h move

no pin

24h volume

$781

10 contracts

Top contract

42¢

$439 · Kalshi

30-day trend

0%50%100%-30d-3w-2w-1wtodayAggregate: 27% (7 days, 7 points)Aggregate: 27% on 2026-05-03
Aggregate of 10 contracts · 7d

Cross-venue edge

Kalshi 25¢ · Polymarket 49¢ · 24pp spread

Buy on Kalshi (25¢, 9 contracts) and sell on Polymarket (49¢) — assuming both contracts settle on the same outcome.

Bracket families

4 clusters across 10 contracts.

These contracts were grouped by title similarity. The headline aggregate combines all clusters; verify the cluster you actually need before quoting a number.

Heads-up — heterogeneous clusters

The top two clusters share only 29% of their title tokens — “Racing Avellaneda vs Huracan Winner” vs “Racing Club vs Montevideo City Winner”. The headline aggregate weights both, so the number on this page is meaningful only if the clusters resolve to the same question.

What moved the line

  • May 1Racing Avellaneda4pp3842¢ · Kalshi
  • May 1Tie3pp2528¢ · Kalshi
  • May 2Tie3pp2831¢ · Kalshi
  • May 3Racing Louisville3pp69¢ · Kalshi
  • May 2Gotham3pp58¢ · Kalshi

Recently closed in general

These markets stopped trading. Last odds and any captured outcome are shown above — full settlement detail lives at the venue.

More like this

Adjacent prediction questions.

How we compute these odds

SimpleFunctions aggregates live prediction-market contracts from Kalshi and Polymarket. Each slug groups contracts that resolve on the same underlying event, identified by venue event_id.

For binary slugs, the headline probability is the liquidity-weighted mid-price across all bound contracts. For multi-outcome slugs (e.g. elections with 3+ candidates), the headline is the leader’s price; we never arithmetically average disjoint outcomes — that would produce a number with no real-world meaning.

Snapshots refresh every 5 minutes during market hours; daily aggregates are computed at 04:00 UTC. The 30-day sparkline is drawn from per-ticker daily means stored in market_indicator_daily; 24h delta and movement events are derived from the same source.

Last updated on this page: 1 min ago.