Where S&P 500 E-mini ES’s Relative Strength Index sat on August 18, 2026
Educational reference. Measured from 1,380 recorded 1m bars of ES on Tuesday, August 18, 2026.
Relative Strength Index crossed above 70 8 separate times during the session, and the typical visit lasted 2 minutes.
Across the whole session it sat above 70 for 1.4% of the time, between 30 and 70 for 93.8%, and below 30 for 4.9%.
| Band | Share of session | Bars | Separate visits | Median visit | Longest visit |
|---|---|---|---|---|---|
| Above 70 | 1.4% | 19 | 8 | 2 min | 6 min |
| Between 30 and 70 | 93.8% | 1,294 | 34 | 20 min | 271 min |
| Below 30 | 4.9% | 67 | 25 | 1 min | 8 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 70 8 times and left it 8 times, with a median stay of 2 minutes and a longest stay of 6 minutes beginning at 20:37 ET. Below 30 there were 25 visits, a median of 1 minutes and a longest of 8 minutes.
Where in the session it happened
| Hour (ET) | Above 70 | Between | Below 30 | Bars |
|---|---|---|---|---|
| 00:00 | 0% | 100% | 0% | 60 |
| 01:00 | 0% | 92% | 8% | 60 |
| 02:00 | 2% | 85% | 13% | 60 |
| 03:00 | 2% | 90% | 8% | 60 |
| 04:00 | 0% | 87% | 13% | 60 |
| 05:00 | 0% | 100% | 0% | 60 |
| 06:00 | 0% | 100% | 0% | 60 |
| 07:00 | 0% | 100% | 0% | 60 |
| 08:00 | 2% | 97% | 2% | 60 |
| 09:00 | 3% | 88% | 8% | 60 |
| 10:00 | 0% | 100% | 0% | 60 |
| 11:00 | 0% | 100% | 0% | 60 |
| 12:00 | 0% | 100% | 0% | 60 |
| 13:00 | 0% | 98% | 2% | 60 |
| 14:00 | 5% | 82% | 13% | 60 |
| 15:00 | 0% | 95% | 5% | 60 |
| 16:00 | 0% | 97% | 3% | 60 |
| 17:00 | 0% | 100% | 0% | 1 |
| 18:00 | 0% | 92% | 8% | 59 |
| 19:00 | 2% | 97% | 2% | 60 |
| 20:00 | 15% | 68% | 17% | 60 |
| 21:00 | 0% | 100% | 0% | 60 |
| 22:00 | 0% | 93% | 7% | 60 |
| 23:00 | 2% | 97% | 2% | 60 |
Same reading, previous session: ES 1m Relative Strength Index, August 17, 2026
What this is and is not
This is a record of where one indicator sat during one completed session. It is not a prediction, and it makes no claim that any reading preceded a move. Whether crossing 70 tends to be followed by a larger move is a separate question, measured separately.
How this was measured
Every 1m bar recorded for ES on Tuesday, August 18, 2026 — 1,380 bars from 00:00 to 23:59 ET — was classified by its Relative Strength Index reading. A visit is an unbroken run of consecutive bars in the same band. The session was complete before this page was built.