What price will Bitcoin hit August 17-23?

Platform comparison

Market context

Bitcoin's price action during the week of 17–23 August 2026 will determine settlement of this contract. The 0% crowd probability reflects either extreme confidence that Bitcoin will not reach a specific threshold during that window, or sparse trading activity leaving the market illiquid and unpriced. Comparison across platforms shows prediction markets typically assign non-zero probability to any future price movement within a defined timeframe, suggesting the current reading may signal thin order books rather than genuine consensus that the event is impossible.

Historical precedent illustrates why weekly Bitcoin price targets warrant caution. During volatile periods—such as the March 2020 liquidation cascade or November 2021's correction—Bitcoin moved 15–20% within single weeks. Even in calmer stretches, intraweek swings of 5–8% are routine. The 0% probability here sits at odds with realised volatility patterns, where tail moves occur regularly enough that professional traders typically assign at least 1–3% probability to any specific price level being touched during a seven-day window.

Traders monitoring this contract should track regulatory announcements from the US SEC regarding spot Bitcoin ETF approvals or custody rules, which have historically triggered sharp repricing. Macroeconomic data releases—particularly US inflation figures and Federal Reserve communications in mid-August—often correlate with Bitcoin volatility. Additionally, on-chain metrics including exchange inflows and whale accumulation patterns in the fortnight preceding the settlement window may signal directional bias. The settlement date's proximity to the contract's publication means real-time price discovery will dominate positioning over longer-term forecasts.

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Best Prediction Markets UK, which mirrors the Polymarket order book directly.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

UK Frequently Asked Questions

Where can I trade this market with the lowest fees?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Best Prediction Markets UK. 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 Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

What are the best prediction markets for UK traders in 2026?

For UKGC-regulated markets: Betfair Exchange (sports, politics) and Smarkets (sports, politics, lower commission than Betfair). For broader global event prediction: Polymarket (deepest liquidity, 0% fee, USDC settlement). For US-regulated option: Kalshi (USD, limited UK payment options). Most serious UK traders use a combination of Betfair for regulated sports and Polymarket for broader markets.