SimpleFunctions

Mike Tyson · KXATTENDUFC250-26JUN

Mike Tyson is priced at 29¢ midpoint on Kalshi. Current book: 15¢ bid, 43¢ ask, 28¢ spread. This outcome ranks #15 of 16 inside KXATTENDUFC250-26JUN.

Price history

29¢ current

+14¢
20¢30¢
May 28, 2026May 28, 2026

Contract brief

If Mike Tyson attends any UFC Freedom 250 event in person, then the market resolves to Yes.

Outcome

Mike Tyson

Rank

#15 of 16

Leader

Pete Hegseth 93¢

Range

10¢-93¢

Family volume

$3K

Identifier

KXATTENDUFC250-26JUN-MTYS

May 28, 2026, 8:08 PM UTC · 28m ago

Implied probability

29¢
Bid/ask midpoint
May 28, 2026, 8:08 PM UTC · 28m ago

Bid

15¢

Ask

43¢

Spread

28¢

Reported volume

$0

Family rank

#15 of 16

16 outcomes · KXATTENDUFC250-26JUN

Closes

Jun 15, 2026

Family volume

$3K

Orderbook snapshot

15 / 43¢

Kalshi
28¢ spread
BidSize
100¢50
100¢130
100¢358
15¢200
2¢1
AskSize
43¢200
44¢44
99¢100
99¢130
99¢5.0K

Contract terms

What resolves this market.

YES condition

If Mike Tyson attends any UFC Freedom 250 event in person, then the market resolves to Yes.

Venue

Kalshi

Closes

Jun 15, 2026

Identifier

KXATTENDUFC250-26JUN-MTYS

SF Signal
SF Index
5828.26
Regime
neutral

Indicators

Yield, cliff risk, volatility, and regime.

IY (Yes)

11656.5%

IY (No)

363.0%

Adj IY

5828%

CRI

6

Overround

12.0%

Regime

neutral

Score

0.5

Full indicator table

11656.5%
363.0%
Adj IY
5828%
6
Overround
12.0%

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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.