This market resolves if the U.S. formally annexes Greenland and, if so, how many months pass before the annexation is formally reversed. Both annexation and reversal must occur via official U.S. government action (e.g., Congressional legislation or executive action).

If the U.S. doesn't formally annex Greenland by 2030, the market resolves N/A. If annexation occurs but is never formally reversed, the market resolves to “8+ years.” Timing is measured from the date of formal annexation to the date of formal reversal.