Prediction
Answer Options
Resolves to the bracket containing the minimum Arctic sea ice extent across all days from August 1, 2026 through October 1, 2026, as published by the National Snow and Ice Data Center (NSIDC). The market stays open until data for October 1, 2026 is published, then resolves immediately; any revisions recorded after that publication are ignored. Extent is measured to the thousandth of a million square kilometers (e.g., 4.255 million sq km), and that precision is used for resolution. Resolution is based on NSIDC, specifically the lowest value recorded for any day between August 1 and October 1, 2026 in the "NH-Daily-Extent" tab of the "Sea Ice Index Daily Extent" data set (nsidc.org/sea-ice-today/sea-ice-tools). If this source becomes unavailable, another will be chosen.
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