Trade: 10.0 or above earthquake before 2027?

Market context

The market concerns whether Earth will experience one or more earthquakes measuring magnitude 10.0 or greater during 2025–2026. The USGS Earthquake Hazards Program will serve as the authoritative resolution source. The current order book on Polymarket implies a 5% probability of such an event occurring within the settlement window, reflecting the crowd's assessment that a magnitude 10.0+ earthquake is a low-probability outcome over this 13-month period.

Historical seismic records provide the primary context for evaluating this probability. The largest instrumentally recorded earthquake was the 1960 Great Chilean earthquake at magnitude 9.5. No magnitude 10.0 event has been documented in the instrumental era spanning roughly 120 years. Theoretical seismology suggests that magnitude 10.0 earthquakes would require fault ruptures of extraordinary length and displacement—potentially exceeding physical limits of crustal mechanics. The recurrence intervals for such events, if they occur at all, are estimated in the hundreds of thousands of years or longer, making occurrence within any 13-month window exceptionally unlikely.

Traders monitoring this market should track major seismic activity announcements from the USGS and international monitoring agencies, particularly following significant earthquakes in subduction zones where the largest events typically originate. Recent major seismic events, such as the 2024 earthquakes in Japan and Morocco, generated substantial public attention but remained well below magnitude 9.0. No current geological indicators or forecasts suggest elevated risk of a magnitude 10.0+ event. The implied probability of 5% reflects a small tail-risk premium above the baseline historical frequency.

How this market resolves

Resolution is handled by the UMA optimistic oracle on Polygon. A proposer submits the outcome, a two-hour dispute window opens, and if no one stakes a counter-claim the payout is final. Contested outcomes escalate to UMA token-holder voting. Payouts clear in USDC to the winning side.

How to trade this market step by step

The mechanics for trading "10.0 or above earthquake before 2027?" are the same as any other PolyGram event contract. Each YES share resolves to $1 if the event happens, or $0 if it doesn't. The current price between 0¢ and 100¢ is the market's probability estimate, set live by the order book.

1. Sign in on polygram.ink with your email — no full KYC under $1,500 lifetime trading volume.
2. Deposit USDC on Polygon (lowest fees, ~$0.01 per transaction) or Ethereum. Funds credit after 12 confirmations.
3. Pick a side. Buy YES if you believe the event will happen; buy NO if you think it won't. The current YES price reflects the market's collective probability.
4. Size your position. If you stake 100 USDC at 4% YES, you'll receive shares that pay $2500 if YES resolves true — a 2400% gross return. If NO resolves, your shares are worth $0.
5. Set risk controls (optional). Stop-loss, take-profit, and limit-order types all supported. Use the trade ticket's slippage box to cap your maximum entry price.
6. Wait for resolution. When the event resolves on-chain via the UMA optimistic oracle, the winning side settles to 100¢ automatically and USDC hits your balance within seconds. Withdrawable to any wallet you control.

How active is this market?

$599K in lifetime turnover and $17K of resting liquidity puts this market in the top 2% by volume for science contracts on PolyGram. Order-book depth is modest — expect a couple of cents of slippage on $1k+ trades.

Last 24 hours alone saw $4K in turnover, consistent with the market's lifetime daily-average pace.

The market has been open for 5 months — the price has had time to stabilise as new information arrived.

Higher-volume markets tend to have tighter spreads and faster price discovery — meaning the displayed YES/NO percentages are more likely to reflect the true crowd-implied probability rather than a single trader's directional view.

Key terms

YES / NO share

A binary outcome token that pays $1.00 if the underlying claim resolves true (YES) or false (NO), and $0 otherwise. The market price between 0¢ and 100¢ is the implied probability.

CLOB

Central limit order book. The matching engine that pairs YES buyers with NO buyers (effectively the same trade). Polymarket's CLOB on Polygon executes trades on-chain via the conditional-tokens framework.

Liquidity

USDC capital sitting in resting limit orders inside the order book. Deeper liquidity means smaller slippage on large trades and a tighter bid-ask spread.

UMA optimistic oracle

The on-chain dispute system that settles each Polymarket market. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution.

Slippage

The difference between the displayed mid-price and your fill price. Affects market orders most; limit orders avoid slippage but may take time to fill.

Conditional token

ERC-1155 outcome share issued by Gnosis Conditional Tokens on Polygon. The token type that resolves to $1.00 or $0.00 at settlement.

See the full prediction-market glossary →

Frequently asked questions

Risk and regulatory note

Prediction-market positions can lose 100% of staked capital. Outcomes are uncertain by definition — historical accuracy of crowd-implied probabilities is high in aggregate but not for any single market. PolyGram does not provide investment advice. Trade only with capital you can afford to lose.

Regulatory status varies by jurisdiction. Germany, the United States, and most EU countries treat Polymarket-style event contracts under one of three frameworks: financial derivative, gambling product, or unregulated novel asset. Consult local counsel before trading.

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