SimpleFunctions

Saitama Seibu Lions · KXNPB-26

Saitama Seibu Lions is priced at 35¢ on Kalshi. Current book: 0¢ bid, 33¢ ask, 33¢ spread. This outcome ranks #1 of 12 inside KXNPB-26.

Price history

35¢ current

+3¢
0¢25¢
Jun 22, 2026Jul 20, 2026

Contract brief

If the Saitama Seibu Lions are the 2026 Japan NPB champion, then the market resolves to Yes.

Outcome

Saitama Seibu Lions

Rank

#1 of 12

Leader

Saitama Seibu Lions 35¢

Range

2¢-35¢

Family volume

$209

Identifier

KXNPB-26-SAI

Jul 22, 2026, 12:38 PM UTC · 22m ago

Implied probability

35¢
Latest venue quote
Jul 22, 2026, 12:38 PM UTC · 22m ago

Bid

Ask

33¢

Spread

33¢

Reported volume

$402

Family rank

#1 of 12

12 outcomes · KXNPB-26

Closes

Dec 15, 2026

Family volume

$209

Orderbook snapshot

0 / 33¢

Kalshi
33¢ spread
BidSize
AskSize
33¢235
34¢200
40¢115
55¢200
70¢200

Contract terms

What resolves this market.

YES condition

If the Saitama Seibu Lions are the 2026 Japan NPB champion, then the market resolves to Yes.

Venue

Kalshi

Closes

Dec 15, 2026

Identifier

KXNPB-26-SAI

SF Signal
SF Index
231.99
Regime
neutral

Indicators

Yield, cliff risk, volatility, and regime.

IY (Yes)

464.0%

IY (No)

134.5%

Adj IY

232%

CRI

2

Overround

-0.1%

Regime

neutral

Score

0.5

Full indicator table

464.0%
134.5%
Adj IY
232%
2
Overround
-0.1%

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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.