Kalshi’s Senate contracts can settle on different answers to the same election

Prediction exchange Kalshi’s Senate markets showed different Democratic odds on Oct. 28, but buying a four-contract hedge at the quoted prices cost $3.02 before fees for a $3 gross payout only if the control and seat-count outcomes aligned. The Senate-control market had a 64.5% midpoint at 22:11:45 UTC, while a normalized estimate from the Democratic seat-count markets put the chance of 51 or more seats at about 62.1%. That 2.4-percentage-point gap was a comparison between prices. The four purchase quotes already exceeded the conditional payout by two cents, and the contracts’ different settlement provisions left a separate risk. The quote test comes alongside Talos’s Oct. 28 research into pricing differences across Senate markets. Its historical nine-leg model found occasional positive results under stated execution assumptions.

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