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What will the biggest earthquake be on October 28, 2026?
polymarket

What will the biggest earthquake be on October 28, 2026?

Volume:
$3,198

5.9 to 6.0

 - Polymarket

5.9 to 6.0 - Polymarket

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Oct 29, 2026

Closed: Oct 29, 4:01 PM EST

polymarket

Polymarket

View
Outcome
Trade
Chance %
Price
Spread
Liquidity
Volume
24h
7d
Open Interest
Ends in
Result
polymarket

5.9 to 6.0

View
100%
33%
Yes 100¢No 0¢
—
N/A
$817
N/A
N/A
N/A
Settled
Yes
polymarket

6.1 or more

View
0%
23%
Yes 0¢No 100¢
—
N/A
$885
N/A
N/A
N/A
Settled
No
polymarket

Under 5.3

View
0%
Yes 0¢No 100¢
—
N/A
$482
N/A
N/A
N/A
Settled
No
polymarket

5.5 to 5.6

View
0%
38%
Yes 0¢No 100¢
—
N/A
$411
N/A
N/A
N/A
Settled
No
polymarket

5.3 to 5.4

View
0%
Yes 0¢No 100¢
—
N/A
$354
N/A
N/A
N/A
Settled
No
polymarket

5.7 to 5.8

View
0%
7%
Yes 0¢No 100¢
—
N/A
$248
N/A
N/A
N/A
Settled
No
Total markets: 6

Description

This market will resolve to the bracket containing the magnitude of the largest earthquake recorded globally on October 28, 2026, as reported by the USGS Earthquake Catalog. Brackets: Under 5.3 / 5.3 to 5.4 / 5.5 to 5.6 / 5.7 to 5.8 / 5.9 to 6.0 / 6.1 or more. Exactly one bracket resolves "Yes". The observation period is the UTC calendar day: 00:00 UTC to 23:59 UTC on October 28, 2026. An earthquake is assigned to the day containing its origin time. Magnitude refers to the USGS preferred magnitude value, listed under 'Magnitude' in the format column. If USGS revises a magnitude after initial publication, the revision governs provided it is published before 2:00 PM ET on October 29, 2026. A value first published after that time is not considered. If the reported magnitude carries more than one decimal place, it is rounded to the nearest tenth using standard rounding conventions (0.05 rounds up). Brackets are inclusive of their stated endpoints. If no earthquake data for October 28, 2026 has been published by 2:00 PM ET on October 29, 2026, this market will resolve to the "Under 5.3" bracket. The resolution source for this market is the USGS Earthquake Catalog, maintained by the United States Geological Survey, at https://earthquake.usgs.gov/earthquakes/search/.

Polymarket

This market will resolve to the bracket containing the magnitude of the largest earthquake recorded globally on October 28, 2026, as reported by the USGS Earthquake Catalog. Brackets: Under 5.3 / 5.3 to 5.4 / 5.5 to 5.6 / 5.7 to 5.8 / 5.9 to 6.0 / 6.1 or more. Exactly one bracket resolves "Yes". The observation period is the UTC calendar day: 00:00 UTC to 23:59 UTC on October 28, 2026. An earthquake is assigned to the day containing its origin time. Magnitude refers to the USGS preferred magnitude value, listed under 'Magnitude' in the format column. If USGS revises a magnitude after initial publication, the revision governs provided it is published before 2:00 PM ET on October 29, 2026. A value first published after that time is not considered. If the reported magnitude carries more than one decimal place, it is rounded to the nearest tenth using standard rounding conventions (0.05 rounds up). Brackets are inclusive of their stated endpoints. If no earthquake data for October 28, 2026 has been published by 2:00 PM ET on October 29, 2026, this market will resolve to the "Under 5.3" bracket. The resolution source for this market is the USGS Earthquake Catalog, maintained by the United States Geological Survey, at https://earthquake.usgs.gov/earthquakes/search/.

Frequently asked questions

On Polymarket, the dashboard for the October 2026 earthquake market tracks the implied probability of different earthquake magnitudes occurring on October 28, 2026. You'll find the current odds for each magnitude range, along with a history of how those odds have changed over time. The dashboard also displays the 24-hour trading volume, currently at $831, and the total market volume, which is $3,198. This allows traders to quickly assess market sentiment and activity surrounding the potential for significant seismic events.

Currently, it's difficult to directly compare the odds in this market to traditional analyst forecasts, as predicting earthquake magnitude is a complex scientific challenge. However, the collective wisdom of traders on Polymarket represents a different perspective – a probabilistic assessment based on available information and individual risk tolerance. If seismological forecasts consistently predict a low probability of a major earthquake, we might expect to see lower odds for higher magnitude events in this market, and vice versa. Discrepancies could highlight areas where the market perceives information differently than experts.

On Polymarket, this market is priced through a continuous auction mechanism where traders buy and sell contracts representing different earthquake magnitude ranges. The price of each contract reflects the market's collective belief about the probability of that magnitude occurring. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. As more traders participate and new information becomes available, the prices adjust accordingly, providing a real-time assessment of risk. The market’s price is determined solely by supply and demand among traders on Polymarket.

This market resolves around Oct 29, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. The magnitude of the largest earthquake recorded on October 28, 2026, will be used to determine the winning outcome. Data will be sourced from established seismological agencies and their publicly available records. The resolution will be based on the Richter scale or a comparable measurement system widely accepted within the seismological community, ensuring a transparent and objective assessment of the event’s magnitude.

Several signals could significantly impact this market. Major geological events, such as significant aftershocks in known seismic zones, or new research indicating increased or decreased earthquake risk, could all shift trader sentiment. Increased media attention on earthquake preparedness or warnings from geological surveys could also influence trading activity. Furthermore, any unexpected developments in earthquake prediction technology or changes in the understanding of seismic activity patterns could lead to substantial movements in the odds for this market.