Pair #12121

Antecedent (if this happens)

KXPGATOP5-THOC26-BKOE

The Open Championship: Will Brooks Koepka finish top 5?

Series: KXPGATOP5
Entity: Brooks Koepka
Expiration: 2026-08-02T04:00:00Z
Volume: 3896

YES ask: 0.0500
NO ask: 0.9600
Last: 0.0600

View on Kalshi

Rules If Brooks Koepka finishes in the top 5 (including ties) in the 2026 The Open Championship, then the market resolves to Yes.
Consequent (then it means this happened or will happen)

KXPGATOP20-THOC26-BKOE

The Open Championship: Will Brooks Koepka finish top 20?

Series: KXPGATOP20
Entity: Brooks Koepka
Expiration: 2026-08-02T04:00:00Z
Volume: 11967

YES ask: 0.2000
NO ask: 0.8100
Last: 0.2000

View on Kalshi

Rules If Brooks Koepka finishes in the top 20 (including ties) in the 2026 The Open Championship, then the market resolves to Yes.
LLM Screening

Confidence: high
Model: rule-screener-v1
Screened: 2026-07-15T07:45:37Z
Code version: ecbe685

Reasoning: rule: KXPGATOP5 is a strict subset of KXPGATOP20 for the same player and tournament

Strategy: Buy NO on antecedent + YES on consequent
Est. yield (after fees): -96.13% (negative yield)
Cost: $1.1600 + ~$0.0139 est. fees
Days to maturity: 18
Hurdle yield: 4.23%
Excess yield: -100.36% BELOW HURDLE

Human Review

Decision: confirmed
Reviewed at: 2026-07-15T07:45:37Z

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