Antecedent (if this happens)
KXGRANDSLAM-CALC26-2
How many Grand Slams will Carlos Alcaraz win in 2026?
Series: KXGRANDSLAM
Entity: 2+ Grand Slam wins
Expiration: 2026-09-15T14:00:00Z
Volume: 32181
YES ask: 0.2800
NO ask: 0.8000
Last: 0.2800
View on Kalshi
Rules
If Carlos Alcaraz wins at least 2 tennis Grand Slams in 2026, then the market resolves to Yes.
Consequent (then it means this happened or will happen)
KXGRANDSLAM-JSIN26-2
How many Grand Slams will Jannik Sinner win in 2026?
Series: KXGRANDSLAM
Entity: 2+ Grand Slam wins
Expiration: 2026-09-15T14:00:00Z
Volume: 20067
YES ask: 0.5800
NO ask: 0.4600
Last: 0.5900
View on Kalshi
Rules
If Jannik Sinner wins at least 2 tennis Grand Slams in 2026, then the market resolves to Yes.
Confidence: none
Model: claude-sonnet-4-6
Screened: 2026-03-19T08:41:03Z
Code version: N/A
Reasoning: These are independent events about two different players. Sinner winning 2+ Grand Slams has no logical necessity relationship with Alcaraz winning 2+ Grand Slams, and vice versa.
Strategy: Buy NO on antecedent + YES on consequent
Est. yield (after fees):
-87.11%
(negative yield)
Cost:
$1.3800
+ ~$0.0283 est. fees
Days to maturity:
61
Hurdle yield:
4.32%
Excess yield:
-91.43%
BELOW HURDLE