SimpleFunctions
8 source contracts·Kalshi 4 + Polymarket 4·refreshed just now·Closes Jan 31, 2027 · 241d

South Korea GDP growth in Q1 2026?

Bracket2.5%+

Liquidity-weighted aggregate sits at 56% across 8 contracts. Kalshi at 91%, Polymarket at 20% — a 71pp cross-venue gap.

Implied probability

56%
0%50%100%

Kalshi

91%

4 contracts

Polymarket

20%

4 contracts

Cross-venue gap

71pp

wide divergence

24h move

no pin

24h volume

$18

8 contracts

Closes

Jan 31, 2027

241 days

30-day trend

0%50%100%-30d-3w-2w-1wtodayAggregate: 62% (30 days, 30 points)Aggregate: 62% on 2026-06-04
Aggregate of 8 contracts · 30d

Cross-venue edge

Kalshi 91¢ · Polymarket 20¢ · 71pp spread

Buy on Polymarket (20¢, 4 contracts) and sell on Kalshi (91¢) — assuming both contracts settle on the same outcome.

Bracket families

4 clusters across 8 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 27% of their title tokens — “Will Spain GDP growth rate YoY for Q1 2026 be above 2” vs “Eurozone Annual GDP Growth 2026”. 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

  • Jun 16.0-7.0%16pp1329¢ · Polymarket
  • Jun 23.3%13pp821¢ · Polymarket
  • May 306.0-7.0%10pp2313¢ · Polymarket
  • May 283.3%7pp2417¢ · Polymarket
  • May 293.3%7pp1710¢ · Polymarket

Recently closed in recession

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

More like this

Other questions in recession.

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: just now.