Educational reference. Measured from 92 recorded 15m bars of ES (E-mini S&P 500) on Tuesday, September 8, 2026.
ADX crossed above 25 2 separate times during the session, and the typical visit lasted 225 minutes. Across the whole session it sat above 25 for 32.6% of the time, between 20 and 25 for 21.7%, and below 20 for 45.7%.
| Band | Share of session | Bars | Separate visits | Median visit | Longest visit | |
|---|---|---|---|---|---|---|
| Above 25 | 32.6% | 30 | 2 | 225 min | 255 min | |
| Between 20 and 25 | 21.7% | 20 | 5 | 60 min | 90 min | |
| Below 20 | 45.7% | 42 | 4 | 142 min | 255 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 2 times, with a median stay of 225 minutes and a longest of 255. 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.