Where SPY’s Fast Stochastic sat on August 21, 2026
Educational reference. Measured from 287 recorded 1m bars of SPY on Friday, August 21, 2026.
Fast Stochastic crossed above 80 26 separate times during the session, and the typical visit lasted 3 minutes.
Across the whole session it sat above 80 for 30.3% of the time, between 20 and 80 for 51.9%, and below 20 for 17.8%.
| Band | Share of session | Bars | Separate visits | Median visit | Longest visit |
|---|---|---|---|---|---|
| Above 80 | 30.3% | 87 | 26 | 3 min | 14 min |
| Between 20 and 80 | 51.9% | 149 | 39 | 3 min | 18 min |
| Below 20 | 17.8% | 51 | 15 | 2 min | 13 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 26 times and left it 26 times, with a median stay of 3 minutes and a longest stay of 14 minutes beginning at 04:26 ET. Below 20 there were 15 visits, a median of 2 minutes and a longest of 13 minutes.
Where in the session it happened
| Hour (ET) | Above 80 | Between | Below 20 | Bars |
|---|---|---|---|---|
| 04:00 | 44% | 54% | 2% | 52 |
| 05:00 | 28% | 51% | 21% | 43 |
| 06:00 | 31% | 44% | 25% | 52 |
| 07:00 | 36% | 57% | 7% | 58 |
| 08:00 | 25% | 65% | 10% | 60 |
| 09:00 | 0% | 18% | 82% | 22 |
Same reading, previous session: SPY 1m Fast Stochastic, 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 Fast Stochastic reading. A visit is an unbroken run of consecutive bars in the same band. The session was complete before this page was built.