Where SPY’s ADX sat on August 18, 2026
Educational reference. Measured from 914 recorded 1m bars of SPY on Tuesday, August 18, 2026.
ADX crossed above 25 11 separate times during the session, and the typical visit lasted 11 minutes.
Across the whole session it sat above 25 for 20.7% of the time, between 20 and 25 for 25.2%, and below 20 for 54.2%.
| Band | Share of session | Bars | Separate visits | Median visit | Longest visit |
|---|---|---|---|---|---|
| Above 25 | 20.7% | 189 | 11 | 11 min | 63 min |
| Between 20 and 25 | 25.2% | 230 | 31 | 7 min | 18 min |
| Below 20 | 54.2% | 495 | 21 | 14 min | 92 min |
Why the visit count matters more than the percentage
A share of the session says how much time a reading spent in a band. It does not say whether that time came as one sustained stretch or as repeated brief excursions. Here the reading entered the zone above 25 11 times and left it 11 times, with a median stay of 11 minutes and a longest stay of 63 minutes beginning at 04:01 ET. Below 20 there were 21 visits, a median of 14 minutes and a longest of 92 minutes.
Where in the session it happened
| Hour (ET) | Above 25 | Between | Below 20 | Bars |
|---|---|---|---|---|
| 04:00 | 100% | 0% | 0% | 56 |
| 05:00 | 13% | 19% | 68% | 53 |
| 06:00 | 23% | 49% | 28% | 53 |
| 07:00 | 0% | 3% | 97% | 58 |
| 08:00 | 18% | 22% | 60% | 60 |
| 09:00 | 33% | 40% | 27% | 60 |
| 10:00 | 3% | 5% | 92% | 60 |
| 11:00 | 12% | 43% | 45% | 60 |
| 12:00 | 0% | 43% | 57% | 60 |
| 13:00 | 0% | 32% | 68% | 60 |
| 14:00 | 60% | 27% | 13% | 60 |
| 15:00 | 5% | 35% | 60% | 60 |
| 16:00 | 7% | 19% | 75% | 59 |
| 17:00 | 4% | 8% | 88% | 48 |
| 18:00 | 31% | 16% | 53% | 58 |
| 19:00 | 23% | 42% | 35% | 48 |
| 20:00 | 0% | 0% | 100% | 1 |
What this is and is not
This is a record of where one indicator sat during one completed session. It is not a forecast, and it makes no claim that any reading preceded a move. Whether crossing 25 tends to be followed by a larger move is a separate question, measured separately.
How this was measured
Every 1m bar recorded for SPY on Tuesday, August 18, 2026 — 914 bars from 04:01 to 20:00 ET — was classified by its ADX reading. A visit is an unbroken run of consecutive bars in the same band. The session was complete before this page was built.