We use Chandelier Stops for most of our trailing stops. We have been asked to explain how to calculate the Chandelier Stop, so here is the explanation. We use a 10-day period. That variable can be changed to suit your taste. The longer the period, the “looser” the stop will be, as compared to the current underlying price. If you Google this subject, you may see longer time periods (22 days, for example) being used.