What Does Bollinger Bands Actually Read on ES 15-minute Charts?
Educational reference. Measured from 453 recorded values on E-mini S&P 500 15-minute charts through October 5, 2026.
The middle half of all readings sat between 7,748 and 7,780, with a median of 7,758.
Bollinger Bands measures a moving average with bands set a number of standard deviations either side. This page reports what it actually read on E-mini S&P 500 15-minute charts — not what it is supposed to do, but the distribution of 453 recorded values over the last 90 days.
| Series | Median | Middle half | 5th / 95th | Full range |
|---|---|---|---|---|
| Upper | 7,758 | 7,748 – 7,780 | 7,737 / 7,820 | 7,710 – 7,845 |
| Middle | 7,746 | 7,736 – 7,769 | 7,722 / 7,790 | 7,695 – 7,833 |
| Lower | 7,737 | 7,723 – 7,758 | 7,693 / 7,784 | 7,666 – 7,822 |
The median is the middle reading, so a single unusual session cannot drag it. The middle half is where Bollinger Bands sat on half of all bars — the range you should expect to see most of the time on this chart.
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How this was measured
Every 15-minute bar of E-mini S&P 500 recorded in the last 90 days was read, and the values grouped without smoothing or filtering. Series with fewer than 400 readings are omitted rather than shown on thin evidence. These are recorded values, not predictions.