SimpleFunctions

Billie Eilish · KX1ALBUM-26DEC

Billie Eilish is priced at 13¢ on Kalshi. Current book: 13¢ bid, 21¢ ask, 8¢ spread. This outcome ranks #10 of 16 inside KX1ALBUM-26DEC.

Price history

13¢ current

2¢
10¢20¢
May 7, 2026May 31, 2026

Contract brief

If Billie Eilish has a #1 album on the Billboard 200 by Dec 26, 2026, then the market resolves to Yes.

Outcome

Billie Eilish

Rank

#10 of 16

Leader

Olivia Rodrigo 97¢

Range

1¢-97¢

Family volume

$1K

Identifier

KX1ALBUM-26DEC-BIL

Jun 6, 2026, 9:38 AM UTC · 20m ago

Implied probability

13¢
Latest venue quote
Jun 6, 2026, 9:38 AM UTC · 20m ago

Bid

13¢

Ask

21¢

Spread

Reported volume

$8K

Family rank

#10 of 16

16 outcomes · KX1ALBUM-26DEC

Closes

Dec 27, 2026

Family volume

$1K

Orderbook snapshot

13 / 21¢

Kalshi
8¢ spread
BidSize
13¢40
10¢32
9¢500
3¢47
2¢786
AskSize
22¢500
84¢52
85¢1.5K
90¢1

Contract terms

What resolves this market.

YES condition

If Billie Eilish has a #1 album on the Billboard 200 by Dec 26, 2026, then the market resolves to Yes.

Venue

Kalshi

Closes

Dec 27, 2026

Identifier

KX1ALBUM-26DEC-BIL

SF Signal
SF Index
599.27
Regime
neutral

Indicators

Yield, cliff risk, volatility, and regime.

IY (Yes)

1198.5%

IY (No)

26.8%

Adj IY

599%

CRI

7

Overround

11.9%

Regime

neutral

Score

0.5

Full indicator table

1198.5%
26.8%
Adj IY
599%
7
Overround
11.9%

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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.