Educational reference. Measured from 1020 recorded 1m bars of ES (E-mini S&P 500) on Friday, September 18, 2026.
ADX crossed above 25 17 separate times during the session, and the typical visit lasted 27 minutes. Across the whole session it sat above 25 for 50.6% of the time, between 20 and 25 for 18.9%, and below 20 for 30.5%.
| Band | Share of session | Bars | Separate visits | Median visit | Longest visit | |
|---|---|---|---|---|---|---|
| Above 25 | 50.6% | 516 | 17 | 27 min | 87 min | |
| Between 20 and 25 | 18.9% | 193 | 31 | 5 min | 20 min | |
| Below 20 | 30.5% | 311 | 15 | 18 min | 64 min |
ADX measures trend STRENGTH and says nothing about direction — 30 is a strong move that may be up or down. Below 20 the market is ranging, and trend-following rules tend to be chopped up there.
Here the reading entered a trending reading 17 times, with a median stay of 27 minutes and a longest of 87. ADX is the filter most strategies gate on, so how long it actually held above the threshold decides how many of a day's signals would have been allowed through at all.