SimpleFunctions
10 source contracts·Kalshi 10·refreshed just now·Closes Feb 28, 2028 · 615d

Who will win Rookie of the Year

Liquidity-weighted aggregate sits at 18% across 10 Kalshi contracts.

Implied probability

18%
0%50%100%

Kalshi

18%

10 contracts

Polymarket

not bound

Cross-venue gap

single venue

24h move

no pin

24h volume

$3K

10 contracts

Closes

Feb 28, 2028

615 days

30-day trend

0%50%100%-30d-3w-2w-1wtodayAggregate: 14% (30 days, 30 points)Aggregate: 14% on 2026-06-23
Aggregate of 10 contracts · 30d

Bracket families

9 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.

Cluster 1

Who will win Players' Player of the Year

2 contracts$231

Cluster 2

Will Caleb Downs win the Defensive Rookie of the Year

1 contract$714

Cluster 3

Will Makai Lemon win the Offensive Rookie of the Year

1 contract$457

Cluster 4

Will Jordyn Tyson win the Offensive Rookie of the Year

1 contract$429

Cluster 5

Will Rueben Bain Jr. win the Defensive Rookie of the Year

1 contract$421

Cluster 6

Will Carson Beck win the Offensive Rookie of the Year

1 contract$117

Cluster 7

Will Jadarian Price win the Offensive Rookie of the Year

1 contract$83

Cluster 8

Will Arvell Reese win the Defensive Rookie of the Year

1 contract$80

Cluster 9

Will Fernando Mendoza win the Offensive Rookie of the Year

1 contract$72

Analysis

This 15% probability reflects market expectations for a specific Rookie of the Year winner in what appears to be a fragmented field. The low individual contract prices suggest no single candidate has emerged as the clear favorite, with the highest-priced contract at 11 cents indicating distributed expectations across multiple rookies. The current probability level is driven by competitive uncertainty among candidates like Jadarian Price, Jordyn Tyson, and Makai Lemon. Movement in this probability will depend on performance metrics during the remainder of the season and how individual rookie statistics develop relative to peers. The primary resolution point will be the official Rookie of the Year award announcement at season's end, which typically occurs in early 2027, making regular performance data and voting patterns key indicators of probability shifts.

  • No single candidate contracts above 11 cents suggests a competitive, multi-candidate field rather than a consensus favorite
  • The gap between individual contract prices (7-11 cents) indicates meaningful probability distributed across at least 3-4 serious contenders
  • 24-hour trading volumes remain modest (under $300 for top contracts), suggesting limited market certainty or attention to individual rookie races
  • Performance statistics and cumulative season data through the remainder of 2026 will directly influence probabilities as voters evaluate candidates
  • The official award announcement timing in early 2027 serves as the hard resolution date, making pre-announcement period trading patterns a potential leading indicator

What moved the line

  • Jun 23Declan Rice9pp145¢ · Kalshi
  • Jun 22Bruno Fernandes8pp5765¢ · Kalshi
  • Jun 17Bruno Fernandes4pp5955¢ · Kalshi
  • Jun 23Caleb Downs3pp1720¢ · Kalshi
  • Jun 21Declan Rice3pp1316¢ · 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.

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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.

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