What price will Bitcoin hit May 18-24?

Platform comparison

Active sub-markets

Market context

Bitcoin’s spot price is still trading well below the higher rungs in this market, with recent prints around the high-$77,000s. Fortune put BTC at $77,347.59 on 18 May, while CoinCodex and Binance both had short-term models clustering around $77,000 to $78,500 for late May, only gradually edging higher. That leaves the current 0% YES line consistent with the idea that a move through the next upside threshold is still possible, but not yet priced as the base case. The comparison to prior short-window BTC markets is straightforward: when price is consolidating beneath a round-number band, implied probabilities tend to stay compressed until spot actually starts clearing those levels.

The main catalysts are the usual macro and flow drivers: ETF demand, dollar strength, rates expectations, and any sharp move in broader crypto liquidity. On the data side, traders will also watch whether BTC can hold above the mid-$77,000 area and extend towards the $78,000 to $80,000 region flagged by recent forecasts from CoinCodex, Changelly and Binance. Polymarket’s own companion market on BTC for 18 May priced the lower strike levels most actively, underlining how little room there is for a quick squeeze before the settlement window closes on 25 May. Any fresh exchange flows, large wallet transfers or macro headlines before then could still reset the odds quickly.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track What price will Bitcoin hit May 18-24? on the five venues with material liquidity for prediction markets. Live odds come from the Polymarket Polygon order book — the only source that ships real-time data under an open licence. For Kalshi, Betfair and Manifold we list platform attributes (fee, KYC, settlement, payment) instead of fabricated odds, because their APIs use non-comparable contract definitions.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

FAQ

Where can I trade this market with the lowest fees?

On PolyGram, 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 PolyGram?

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

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, PolyGram triggers a quick verification flow that finishes in minutes.