Culture

Big Brother Season 28 Winner

Kalshi vs Polymarket, compared live. Resolves Oct 1, 2026 ·

Prediction market prices reflect trader sentiment, not a guaranteed outcome. Nothing on this page is financial advice or a promise of any return.

Dee Valladares

Kalshi
Chance of Yes8.0%
Bid 8.0% / Ask 9.0%
View on Kalshi
Polymarket
Chance of Yes7.5%
Bid 7.0% / Ask 8.0%
View on Polymarket
Best available price: Polymarket (+1 pts)
Last checked just now · refreshes automatically every 30s
KalshiPolymarket
0%20%40%Jul 14Sep 7
Sep 7, 2026Kalshi10.0%Polymarket7.5%

Rick Devens

Kalshi
Chance of Yes10.0%
Bid 9.0% / Ask 10.0%
View on Kalshi
Polymarket
Chance of Yes8.1%
Bid 2.1% / Ask 14.0%
View on Polymarket
Best available price: Kalshi (+4 pts)
Last checked just now · refreshes automatically every 30s
KalshiPolymarket
0%13%25%Jul 10Sep 7
Sep 7, 2026Kalshi12.0%Polymarket8.2%

Yash Patel

Kalshi
Chance of Yes24.0%
Bid 24.0% / Ask 26.0%
View on Kalshi
Polymarket
Chance of Yes24.6%
Bid 24.5% / Ask 24.8%
View on Polymarket
Best available price: Polymarket (+1.2 pts)
Last checked just now · refreshes automatically every 30s
KalshiPolymarket
0%15%30%Jul 8Sep 7
Sep 7, 2026Kalshi22.0%Polymarket24.6%

Kamu Kirk

Kalshi
Chance of Yes1.0%
Bid 0.0% / Ask 1.0%
View on Kalshi
Polymarket
Chance of Yes0.1%
Bid 0.1% / Ask 0.1%
View on Polymarket
Best available price: Polymarket (+0.9 pts)
Last checked just now · refreshes automatically every 30s
KalshiPolymarket
0%23%45%Jul 8Sep 7
Sep 7, 2026Kalshi1.0%Polymarket0.1%

Barrett Pfeiffer

Kalshi
Chance of Yes20.0%
Bid 20.0% / Ask 22.0%
View on Kalshi
Polymarket
Chance of Yes22.9%
Bid 21.1% / Ask 24.6%
View on Polymarket
Best available price: Kalshi (+2.6 pts)
Last checked just now · refreshes automatically every 30s
KalshiPolymarket
0%15%30%Jul 8Sep 7
Sep 7, 2026Kalshi18.0%Polymarket22.3%
  • Big Brother 28 premiered on CBS on July 9, 2026 with 14 first-time contestants including an MMA fighter and a RuPaul's Drag Race alum.
  • Subtitled 'Time Trip,' the 28th edition of the programme also features three surprise crossover/return guests, Survivor winner Dee Valladares, Survivor alum Rick Devens, and former Big Brother contestant Angela Murray.
  • Valladares has been an early favorite on the show, shooting to the top spot on Kalshi in the early weeks, leading second-place favorite Rick Devens.
  • The Time Trip format has scrambled alliances more than a usual season, with a time-travel theme and time-based rooms that houseguests have to navigate.
  • Prediction markets have become a genuine spoiler problem for reality TV this season - Kalshi's contestant pricing has, in past seasons, tipped off eventual winners and eliminations.
By Owain Flanders · Updated by hand Aug 3, 2026
  • Resolves to whichever houseguest is named the winner on the live finale, currently set for a 90-minute special on Thursday, Oct 1, 2026 - the last one standing takes home the $750,000 grand prize.
  • Kalshi's own wording: "If [houseguest] are officially declared the winner of Big Brother Season 28, then the market resolves to Yes." Kalshi and Polymarket both list every houseguest as a separate Yes/No contract rather than one multi-choice market, so each name's price is its own independent read on the field, not a slice of a fixed 100%.
  • Only the 5 real contenders by current price are tracked here out of 17 total houseguests - the rest are sitting at a nominal 1-2% on both platforms with no realistic path to the money.
  • Thursdays
    Live eviction episodes air weekly on CBS - each one moves both the winner market and that week's standalone eviction market
  • 2026-10-01
    90-minute live finale on CBS - the winner market resolves