How many 5.5 or above earthquakes June 1 - June 7?

Platform comparison

Active sub-markets

Market context

Earth experiences roughly one magnitude 5.5 or greater earthquake every two to three days on average, according to USGS historical data spanning decades. A seven-day window therefore carries a high statistical likelihood of capturing at least one such event somewhere globally. The 0% implied probability currently reflected across major prediction market platforms suggests either extreme illiquidity, a technical glitch in how the market was initialised, or traders interpreting the resolution criteria with unusual strictness—possibly around reporting delays or the specific USGS database snapshot used at settlement.

Historical precedent matters here. Between 2015 and 2024, USGS records show no seven-day period without a 5.5+ magnitude earthquake, though gaps of up to ten days have occurred rarely. The current crowd assessment diverges sharply from baseline seismic frequency, making this market a potential arbitrage opportunity if traders believe the historical distribution holds. Kalshi's fixed-odds format and Polymarket's decimal odds presentation may obscure this divergence differently; Betfair and Smarkets typically show clearer probability spreads that would flag such misalignment more visibly to experienced traders.

The resolution hinges entirely on USGS Earthquake Hazards Program data availability by 8 June 2026, 03:59 UTC. Traders should monitor whether any major seismic events occur during the window and whether USGS reporting lags affect settlement timing. Real-time earthquake notifications from USGS and the Pacific Tsunami Warning Center provide the most reliable early signals; these are publicly available and updated continuously. KYC requirements vary across platforms—Kalshi operates under stricter US regulatory oversight than Polymarket or Smarkets—which may affect which trader cohorts are pricing this market and their baseline assumptions about earthquake frequency.

Methodology

This page compares How many 5.5 or above earthquakes June 1 - June 7? 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

Where can I trade this market with the lowest fees?

On Kalshi Alternative UK, 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 Kalshi Alternative UK?

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

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.