Where SPY’s Stochastic Oscillator sat on August 21, 2026
Educational reference. Measured from 287 recorded 1m bars of SPY on Friday, August 21, 2026.
Stochastic Oscillator crossed above 80 15 separate times during the session, and the typical visit lasted 3 minutes.
Across the whole session it sat above 80 for 31.0% of the time, between 20 and 80 for 53.7%, and below 20 for 15.3%.
| Band | Share of session | Bars | Separate visits | Median visit | Longest visit |
|---|---|---|---|---|---|
| Above 80 | 31.0% | 89 | 15 | 3 min | 21 min |
| Between 20 and 80 | 53.7% | 154 | 24 | 5 min | 25 min |
| Below 20 | 15.3% | 44 | 9 | 2 min | 17 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 80 15 times and left it 15 times, with a median stay of 3 minutes and a longest stay of 21 minutes beginning at 04:28 ET. Below 20 there were 9 visits, a median of 2 minutes and a longest of 17 minutes.
Where in the session it happened
| Hour (ET) | Above 80 | Between | Below 20 | Bars |
|---|---|---|---|---|
| 04:00 | 46% | 54% | 0% | 52 |
| 05:00 | 35% | 44% | 21% | 43 |
| 06:00 | 29% | 52% | 19% | 52 |
| 07:00 | 36% | 57% | 7% | 58 |
| 08:00 | 23% | 70% | 7% | 60 |
| 09:00 | 0% | 23% | 77% | 22 |
Same reading, previous session: SPY 1m Stochastic Oscillator, August 20, 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 80 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 Friday, August 21, 2026 — 287 bars from 04:01 to 09:21 ET — was classified by its Stochastic Oscillator reading. A visit is an unbroken run of consecutive bars in the same band. The session was complete before this page was built.