Other
Big Brother Season 28 · Winner — Will Barrett Pfeiffer win Big Brother Season 28?
Heads up: Kalshi and Polymarket resolve this market 98 days apart — the price difference may reflect different time horizons rather than a genuine arbitrage opportunity.
10.5%volume-weighted implied probability
YES price range
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P
0%50%100%
Kalshi Polymarket
7-day price history Kalshi Polymarket
Mapping notes
Event pair: 'Big Brother Season 28 Winner' ↔ 'Big Brother Season 28 · Winner' (score 1.00, outcome match 1.00).
Kalshi ticker
KXBIGBROTHER-26DEC31-BAR
Resolves 1/7/2027
Polymarket condition
0x4555ed00483b9a4f…
Resolves 10/1/2026
Pro
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