How many 6.5 or above earthquakes August 3 - August 9?

Platform comparison

Market context

A magnitude 6.5-plus quake anywhere on Earth is the event being priced here, and the USGS count is what settles the market, not a private tracker or media tally.[9][7] With crowd-implied probability at 95% YES, the market is already assuming at least one qualifying quake has either occurred or will be confirmed by USGS inside the August 3–9 window; that makes the main risk less about geological possibility than about whether late catalogue updates change the final count.

Recent history supports that framing. The 2026 record already includes multiple 6.5-plus events, including a June 25 M6.9 off Honshu and the June Mindanao sequence, which produced two magnitude 6.5 aftershocks after the main shock.[3][11] In practical terms, this is a high-frequency global threshold rather than a rare-catastrophe contract, so on Polymarket-style pricing the move is usually about confirmation timing; on Kalshi the same view is shown as a dollar price, while Betfair and Smarkets express it in decimal odds with exchange commission, so the same 95% view can look materially different once fees are included.

The near-term catalysts are USGS catalogue revisions and any new event reports that meet the threshold before the window closes, especially if a quake is initially listed below 6.5 and later revised upward or vice versa.[9] For comparison, third-party rolling reports can show the world is active without settling the market: a 9 August update listed four quakes of M5.0+ and none of M6.0+, which would not by itself affect this contract but does underline how quickly the public tally can diverge from the eventual USGS record.[6] KYC and access also matter: Polymarket, Kalshi, Betfair and Smarkets do not serve identical jurisdictions, so the same event can be tradable in one venue and blocked or fee-adjusted in another.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page compares How many 6.5 or above earthquakes August 3 - August 9? specifically across Polymarket, Kalshi, Betfair Exchange and Smarkets. The live probability is the Polymarket mid; the comparison columns summarise each venue's fee structure, KYC, settlement currency and payment rails. Every CTA routes to Polymarket Alternative, 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

Polymarket vs Kalshi — which is better?

Depends on your location. Kalshi is CFTC-regulated, US-only with full KYC. Polymarket is global, on-chain, no KYC up to $1,500. Polymarket has ~10x higher liquidity but higher regulatory risk.

Is Betfair a Polymarket alternative?

Only partially. Betfair Exchange is UK-focused with a sports-betting emphasis; they have politics markets but with thinner liquidity than Polymarket. Settlement in GBP/EUR, 2-5% commission on winnings.

What about Smarkets as an alternative?

Smarkets is a UK betting exchange with a lower default commission (2%) than Betfair. Liquidity on political markets is below Polymarket, comparable to Kalshi. Geo-blocked in many jurisdictions.

Are all these platforms regulated?

No. Kalshi is CFTC-regulated (US). Betfair and Smarkets are UK Gambling Commission licensed. Polymarket operates without explicit regulation — a different risk profile than a regulated sportsbook.

Which platform supports Klarna/SOFORT?

Directly: none. Polymarket accepts only USDC on Polygon. Polymarket Alternative offers a fiat on-ramp via Klarna or SOFORT (DE/AT/CH) and converts internally to USDC for the Polymarket order book. T+1 processing.