Antecedent (if this happens)
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.
Consequent (then it means this happened or will happen)
KXPGATOP40-THOC26-BKOE
The Open Championship: Will Brooks Koepka finish top 40?
Series: KXPGATOP40
Entity: Brooks Koepka
Expiration: 2026-08-02T04:00:00Z
Volume: 525
YES ask: 0.3300
NO ask: 0.9700
Last: 0.3400
View on Kalshi
Rules
If Brooks Koepka finishes in the top 40 (including ties) in the 2026 The Open Championship, then the market resolves to Yes.
Confidence: high
Model: claude-sonnet-5
Screened: 2026-07-14T08:00:36Z
Code version: ecbe685
Reasoning: [structural reuse of KXPGATOP20-THOC26-JROS/KXPGATOP40-THOC26-JROS] A top20 finish is necessarily also a top40 finish.
Strategy: Buy NO on antecedent + YES on consequent
Est. yield (after fees):
-95.58%
(negative yield)
Cost:
$1.1400
+ ~$0.0262 est. fees
Days to maturity:
18
Hurdle yield:
4.23%
Excess yield:
-99.81%
BELOW HURDLE