Trade: Another 7.0 or above earthquake by...?

Market context

The market concerns whether a magnitude 7.0 or greater earthquake will strike anywhere on Earth between now and 31 May 2026. The USGS Earthquake Hazards Program serves as the authoritative resolution source, with a provision allowing the market to remain open through the end of the following month should a significant event occur but not yet appear in official records. The current order book on Polymarket implies a 55% probability of at least one such event occurring within this roughly 18-month window.

Historical seismic data provides context for interpreting this probability. The USGS records approximately 15 magnitude 7.0–7.9 earthquakes annually on a global basis, with larger events occurring less frequently. Over an 18-month period, the statistical expectation would suggest a moderately high likelihood of at least one event meeting the threshold, though seismic activity clusters unpredictably. The 55% implied probability reflects neither the raw statistical average nor extreme confidence in either direction, suggesting the market is pricing genuine uncertainty rather than a consensus view.

Traders monitoring this market should track seismic activity reports from the USGS, which publishes real-time earthquake data, and watch for any significant tremors in major subduction zones or fault lines, particularly around the Pacific Ring of Fire. Recent activity in regions such as Japan, Chile, and Indonesia warrants attention given their historical seismic volatility. The resolution mechanism's allowance for a one-month lag after the settlement date means traders should remain alert to any borderline events occurring near the deadline, as these may affect final settlement timing.

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 "Another 7.0 or above earthquake by...?" 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 50% YES, you'll receive shares that pay $200 if YES resolves true — a 100% 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?

$21K in lifetime turnover and $3K of resting liquidity puts this market in the around the median by volume for earthquakes contracts on PolyGram. Order-book depth is thin — large orders may need to be split across the book or executed as limit orders.

Last 24 hours alone saw $724 in turnover, consistent with the market's lifetime daily-average pace.

The market has been open for under a month — fresh enough that information asymmetry remains a real factor.

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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