What price will Ethereum hit on June 21?

Platform comparison

Active sub-markets

Market context

Ethereum closed around the mid-$1,700s on 21 June, with historical data showing roughly $1.71K–$1.75K on 20–21 June, so a market asking whether it “hit” a given price on that date is really a question about a short window of intraday volatility rather than a broad trend[7]. With the crowd-implied probability at 0% YES, the book is effectively saying the relevant strike was not touched; that reads as an extreme tail view unless the contract’s threshold sits far above spot. On venue comparison, Polymarket and Kalshi usually express this kind of event through implied probability, while Betfair and Smarkets are easier to read as decimal-odds books; the practical difference is that a 0.20 probability looks like 5.0 in decimal odds, before fees and spread. KYC and access also matter: Kalshi is US-regulated and geofenced, Polymarket and Betfair/Smarkets have different jurisdictional and verification rules, so the same ETH move can price differently across books even when they reference the same settlement date.

The main catalysts are still Ethereum-specific rather than macro: spot ETF flow headlines, network-upgrade timetables, and broad crypto risk sentiment can all move ETH enough to test a strike around the current trading band. Reuters reported in May that crypto markets had been watching firmer institutional demand and policy expectations, which matters because short-dated price events often hinge on whether those flows arrive before the settlement timestamp rather than by the end of the day[8]. Traders should also watch US market hours around the contract’s cutoff, because a sharp move in the final few hours can decide the outcome even if the daily close looks unremarkable. When comparing books, the fee drag is important: Kalshi charges contract fees that slightly widen the effective entry, while Betfair and Smarkets build cost into commission and spread, so near-the-money ETH prices can imply different break-even levels even when the headline probability appears similar.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page compares What price will Ethereum hit on June 21? 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

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

Is this market available outside the US?

Kalshi Alternative UK 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'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.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, Kalshi Alternative UK 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.