Bitcoin price on May 28?

Platform comparison

Active sub-markets

Market context

Bitcoin's spot price at noon ET on 28 May 2026 will determine this market's outcome. The settlement mechanism ties directly to Binance's BTC/USDT 1-minute candle close at that precise moment, making execution risk and exchange-specific liquidity conditions material factors. The 0% crowd probability reflects either extreme confidence in a specific price range or sparse early trading; such extreme readings often signal thin order books rather than genuine consensus.

Historical Bitcoin volatility over comparable timeframes—typically 3–8% daily moves during neutral conditions—suggests the market's bracket structure will matter considerably. Traders comparing this across platforms should note that Polymarket's decimal odds format and Kalshi's binary structure handle tail-risk pricing differently; a 0% reading on Kalshi implies near-certain rejection of the YES bracket, whilst Polymarket's equivalent would show odds reflecting the same conviction but expressed as a decimal. Fee structures diverge meaningfully: Kalshi charges flat per-contract fees whilst Polymarket applies percentage-based settlement fees, affecting breakeven thresholds for tight-range bets.

Catalysts between now and May 2026 include Federal Reserve policy announcements, major cryptocurrency regulatory developments (particularly any US legislative shifts), and macroeconomic data releases affecting risk appetite. Bitcoin's correlation with equity markets and the US dollar strengthened through 2024–2025; geopolitical events or inflation surprises could shift implied volatility substantially. Traders should monitor Binance's operational status and any announced maintenance windows near the settlement date, as technical outages have occasionally delayed candle data publication.

Methodology

This page compares Bitcoin price on May 28? specifically across Polymarket, Kalshi, Betfair Exchange and Smarkets. Live odds come from the Polymarket order book; the other venues' contract details are maintained manually because their APIs aren't directly comparable. Every CTA routes to Kalshi Alternative UK, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Settlement is the biggest difference between the four platforms: Polymarket on-chain in USDC (instant), Kalshi USD via CFTC (T+1), Betfair and Smarkets in local currency via bank withdrawal (T+1 to T+3). Kalshi Alternative UK routes every trade directly into Polymarket's on-chain settlement, which is why payouts land fastest.

FAQ

Where can I trade this market with the lowest fees?

On Kalshi Alternative UK, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

What's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

What does it cost to trade on Kalshi Alternative UK?

Zero. Kalshi Alternative UK routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.