What price will Bitcoin hit on May 19?

Platform comparison

Active sub-markets

Market context

Bitcoin traded around $78,135 on 17 May and roughly $77,348 by 18 May, leaving the market well below its October 2025 peak of $126,198 and inside the lower half of this year’s range. SoFi’s history table shows 2026 highs near $97,861 and lows near $60,074, which means a large move was still plausible, but not priced as the base case. That helps explain the zero crowd-implied YES probability here: if the settlement definition requires Bitcoin to hit a specific price threshold on 19 May, traders on Polymarket appear to be treating that level as unlikely, while on Kalshi or Betfair the same view would be expressed through different decimal prices or matched odds rather than a direct yes/no quote. Fee treatment also matters: Polymarket’s on-chain structure and Kalshi’s US-regulated KYC reach can change effective costs, while Smarkets and Betfair usually show commission more explicitly.

For near-term catalysts, the main watchpoints are macro prints, ETF flow data, and any abrupt risk-on/risk-off move in US trading hours, as Bitcoin has been responding more to liquidity conditions than to crypto-specific headlines. Fortune’s 18 May update put BTC at $77,347.59, extending the recent drift lower from mid-May levels, and Robinhood’s related event page used CF Benchmarks’ real-time index for a 19 May 1 a.m. EDT reference point, underlining how tightly these markets track timestamped index fixes. If the spot price gaps on Coinbase, CME-linked products, or major exchange flows, the effect can feed through quickly, but each venue’s market may settle differently: Polymarket markets can reflect a simple binary threshold, whereas Betfair and Smarkets typically price the same expectation as an overround-adjusted probability with visible liquidity and commission.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page compares What price will Bitcoin hit on May 19? 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 PolyGram, which mirrors the Polymarket order book at 0% fees.

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.

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.

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.