What price will Bitcoin hit on May 19?

Platform comparison

Active sub-markets

Market context

Bitcoin is being measured against a fixed intraday price threshold on 19 May, with settlement tied to the reference index at the market’s close rather than an end-of-day retail quote. That distinction matters on venues such as Polymarket, Kalshi, Betfair and Smarkets: some display straight implied probability, while others show decimal odds, and the effective edge can differ once fees, liquidity and access limits are included. In recent comparable snapshots, Bitcoin was trading around $76,565 on 19 May and $77,348 on 18 May, after an all-time high of $126,198.07 in October 2025, so the market is now pricing a much lower regime than the peak.

The key read-through is that the crowd-implied 0% YES suggests the relevant strike is well above the prevailing spot range, not that Bitcoin has no chance of moving. Fortune’s 19 May update put BTC at $76,565.02 at 9:30 a.m. ET, down on the day and roughly $29,000 below a year earlier. For a price-hit market, traders should watch ETF flow headlines, any shift in risk appetite around US macro data, and scheduled crypto-specific events that can move spot quickly in both directions. On platforms with broader international access such as Betfair and Smarkets, liquidity and commission can make a materially different entry price from Kalshi or Polymarket, especially when the contract is deep out of the money.

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Methodology

We read What price will Bitcoin hit on May 19? from four platform perspectives: Polymarket (on-chain CLOB), Kalshi (CFTC-regulated exchange), Betfair Exchange (sports book exchange), Smarkets (peer-to-peer betting exchange). Polymarket's live quote comes directly from the Polygon order book; the other three are listed with their platform attributes — fees, KYC, settlement currency, payment options — because a 1:1 contract comparison without API access would be guesswork.

Resolution & payout

Polymarket settles via UMA Optimistic Oracle on Polygon. A proposer posts the outcome with a bond, the two-hour window runs, then the smart contract pays USDC.

Kalshi settles USD through the CFTC-regulated clearinghouse — the cleanest variant, with heavier KYC. Betfair Exchange settles in account currency (GBP/EUR), net of 2-5% commission. Smarkets follows the same model as Betfair with a lower default 2% commission.

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.

Is this market available outside the US?

PolyGram is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

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 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.

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.