Where SPY’s Relative Strength Index sat on August 20, 2026
Educational reference. Measured from 871 recorded 1m bars of SPY on Thursday, August 20, 2026.
Relative Strength Index crossed above 70 2 separate times during the session, and the typical visit lasted 6 minutes.
Across the whole session it sat above 70 for 1.3% of the time, between 30 and 70 for 86.6%, and below 30 for 12.2%.
| Band | Share of session | Bars | Separate visits | Median visit | Longest visit |
|---|---|---|---|---|---|
| Above 70 | 1.3% | 11 | 2 | 6 min | 7 min |
| Between 30 and 70 | 86.6% | 754 | 16 | 20 min | 217 min |
| Below 30 | 12.2% | 106 | 14 | 4 min | 34 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 2 times and left it 2 times, with a median stay of 6 minutes and a longest stay of 7 minutes beginning at 09:32 ET. Below 30 there were 14 visits, a median of 4 minutes and a longest of 34 minutes.
Where in the session it happened
| Hour (ET) | Above 70 | Between | Below 30 | Bars |
|---|---|---|---|---|
| 04:00 | 0% | 35% | 65% | 54 |
| 05:00 | 0% | 100% | 0% | 41 |
| 06:00 | 0% | 100% | 0% | 45 |
| 07:00 | 0% | 88% | 12% | 59 |
| 08:00 | 0% | 67% | 33% | 60 |
| 09:00 | 18% | 82% | 0% | 60 |
| 10:00 | 0% | 100% | 0% | 60 |
| 11:00 | 0% | 100% | 0% | 60 |
| 12:00 | 0% | 100% | 0% | 60 |
| 13:00 | 0% | 63% | 37% | 60 |
| 14:00 | 0% | 78% | 22% | 60 |
| 15:00 | 0% | 97% | 3% | 60 |
| 16:00 | 0% | 100% | 0% | 58 |
| 17:00 | 0% | 100% | 0% | 44 |
| 18:00 | 0% | 90% | 10% | 48 |
| 19:00 | 0% | 95% | 5% | 41 |
| 20:00 | 0% | 100% | 0% | 1 |
Same reading, previous session: SPY 1m Relative Strength Index, August 19, 2026
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 70 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 Thursday, August 20, 2026 — 871 bars from 04:01 to 20:00 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.