SimpleFunctions

Billie Eilish · KX10SONG-26

Billie Eilish is priced at 53¢ on Kalshi. Current book: 53¢ bid, 67¢ ask, 14¢ spread. This outcome ranks #2 of 16 inside KX10SONG-26.

Price history

53¢ current

1¢
50¢55¢
May 28, 2026Jun 3, 2026

Contract brief

If Billie Eilish has a top 10 song on the Billboard Hot 100 (including features), by the Billboard issue for the week of Dec 26, 2026, then the market resolves to Yes.

Outcome

Billie Eilish

Rank

#2 of 16

Leader

Beyoncé 58¢

Range

1¢-58¢

Family volume

$88

Identifier

KX10SONG-26-BIL

Jun 26, 2026, 6:38 AM UTC · 10m ago

Implied probability

53¢
Latest venue quote
Jun 26, 2026, 6:38 AM UTC · 10m ago

Bid

53¢

Ask

67¢

Spread

14¢

Reported volume

$364

Family rank

#2 of 16

16 outcomes · KX10SONG-26

Closes

Dec 26, 2026

Family volume

$88

Orderbook snapshot

53 / 67¢

Kalshi
14¢ spread
BidSize
100¢450
53¢200
24¢264
23¢50
2¢1.0K
AskSize
67¢200
80¢1
95¢503
96¢47
97¢1.0K

Contract terms

What resolves this market.

YES condition

If Billie Eilish has a top 10 song on the Billboard Hot 100 (including features), by the Billboard issue for the week of Dec 26, 2026, then the market resolves to Yes.

Venue

Kalshi

Closes

Dec 26, 2026

Identifier

KX10SONG-26-BIL

SF Signal
SF Index
112.24
Regime
neutral

Indicators

Yield, cliff risk, volatility, and regime.

IY (Yes)

176.5%

IY (No)

224.5%

Adj IY

112%

CRI

1

Overround

14.2%

Regime

neutral

Score

0.5

Full indicator table

176.5%
224.5%
Adj IY
112%
1
Overround
14.2%

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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.