SimpleFunctions
20 contractsKalshi + Polymarketrefreshed 23 min agoCloses Dec 31, 2026 · 242d

CA Newell's Old Boys vs. Instituto AC Córdoba - More Markets: CA Newell's Old Boys (-1.5)

Liquidity-weighted aggregate sits at 39% across 20 contracts. Kalshi at 30%, Polymarket at 41% — a 11pp cross-venue gap.

Implied probability

39%
0%50%100%

Kalshi

30%

3 contracts

Polymarket

41%

17 contracts

Cross-venue gap

11pp

wide divergence

24h move

no pin

24h volume

$1K

20 contracts

Closes

Dec 31, 2026

242 days

30-day trend

0%50%100%-30d-3w-2w-1wtodayAggregate: 40% (26 days, 26 points)Aggregate: 40% on 2026-05-03
Aggregate of 20 contracts · 26d

Cross-venue edge

Kalshi 30¢ · Polymarket 41¢ · 11pp spread

Buy on Kalshi (30¢, 3 contracts) and sell on Polymarket (41¢) — assuming both contracts settle on the same outcome.

Bracket families

5 clusters across 20 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 0% of their title tokens — “FK Bodø/Glimt vs. Molde FK” vs “Bitcoin vs. Gold vs. S&P 500 in 2026”. The headline aggregate weights both, so the number on this page is meaningful only if the clusters resolve to the same question.

Cluster 1

FK Bodø/Glimt vs. Molde FK

12 contracts$166

Cluster 2

Bitcoin vs. Gold vs. S&P 500 in 2026

3 contracts$299

Cluster 3

Velez Sarsfield vs Newell's Old Boys Winner

3 contracts$159

Cluster 4

Who will die in The Boys: Season 5

1 contract$596

Cluster 5

Liga Nacional de Básquetbol: Winner: Instituto de Córdoba

1 contract$0

What moved the line

  • May 1Season 5?: Soldier Boy10pp3343¢ · Polymarket
  • Apr 28Season 5?: Soldier Boy9pp3039¢ · Polymarket
  • Apr 28Bitcoin9pp2938¢ · Polymarket
  • Apr 27Season 5?: Soldier Boy6pp2430¢ · Polymarket
  • Apr 30Season 5?: Soldier Boy6pp3933¢ · Polymarket

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: 23 min ago.