SimpleFunctions
18 contractsKalshi + Polymarketrefreshed 12 min agoCloses Dec 31, 2026 · 241d

3rd largest company end of April

Liquidity-weighted aggregate sits at 45% across 18 contracts. Kalshi at 55%, Polymarket at 36% — a 19pp cross-venue gap.

Implied probability

45%
0%50%100%

Kalshi

55%

8 contracts

Polymarket

36%

10 contracts

Cross-venue gap

19pp

wide divergence

24h move

no pin

24h volume

$81K

18 contracts

Closes

Dec 31, 2026

241 days

30-day trend

0%50%100%-30d-3w-2w-1wtodayAggregate: 38% (26 days, 26 points)Aggregate: 38% on 2026-05-03
Aggregate of 18 contracts · 26d

Cross-venue edge

Kalshi 55¢ · Polymarket 36¢ · 19pp spread

Buy on Polymarket (36¢, 10 contracts) and sell on Kalshi (55¢) — assuming both contracts settle on the same outcome.

Bracket families

3 clusters across 18 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 — “Will the rate of c” vs “Largest Company end”. The headline aggregate weights both, so the number on this page is meaningful only if the clusters resolve to the same question.

Cluster 1

Will the rate of c

8 contracts$8K

Cluster 2

Largest Company end

6 contracts$56K

Cluster 3

Which company has

4 contracts$17K

What moved the line

  • Apr 27Above 3.4%25pp9469¢ · Kalshi
  • Apr 28Above 3.4%25pp6994¢ · Kalshi
  • Apr 28Alphabet19pp1231¢ · Polymarket
  • Apr 29Alphabet15pp3116¢ · Polymarket
  • Apr 28SpaceX13pp316¢ · Polymarket

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: 12 min ago.