The distance between the Floor and Ceiling values. The size of the Floor/Ceiling range may vary from time to time according to conditions in the underlying market.
The range of a Nadex spread can vary based on how far a particular underlying market’s price can move in a given time period, and how long it is until the spread’s expiration. With longer durations, the spread range will be wider between floor and ceiling. The shorter durations have narrower ranges.
Daily – The US500 1990.0- 2030.0 spread has a strike width of 40.0 points, equivalent to a $400 range value. The daily spread’s duration is from the prior evening to the expiration at 4:15pm ET, or 22 hours 15 minutes.
2hour- The US500 2020.0 – 2030.0 spread has a strike width of 10.0 points, equivalent to a $100 range value. The 2-hour spreads are listed every hour, beginning at 8am, and have hourly expirations from 10am until 4pm ET. In other words, a new spread is listed every hour and each one lasts for two hours, with the last one running from 2pm to 4pm ET.« Back to Glossary Index