Educational reference. Measured from 37 recorded 15 minute sessions of ES (E mini S&P 500), September 3 to October 23, 2026. Updated as each new session is recorded.
In a typical session the 15 minute RSI on ES spends 5.8% of its time above 70, 87.8% between 30 and 70 and 6.4% below 30. It enters the upper zone about 1 separate times per session and the lower zone about 1.
The most time above 70 was on September 21, 2026 (57.6% of the session). The most time below 30 was on October 14, 2026 (31.5%).
Over the last 5 sessions the RSI spent 1.3% of its time above 70 and 7.0% below 30 — less time in the upper zone than its 37 session average of 5.8%.
RSI compares the size of recent gains with recent losses, so a reading above 70 says buying has dominated the last 14 bars — not that price is high. A long stay above 70 is a market trending up, which is the opposite of the reversal the word 'overbought' suggests.
A brief excursion above 70 that resolves in minutes is noise on this timeframe. A sustained one is the signature of a trend that is still running, and selling into it is how traders get run over.
| Session | Above 70 | Between 30 and 70 | Below 30 | Visits up | Visits down |
|---|---|---|---|---|---|
| Fri Oct 23, 2026 | 0.0% | 94.1% | 5.9% | 0 | 1 |
| Thu Oct 22, 2026 | 0.0% | 73.9% | 26.1% | 0 | 3 |
| Wed Oct 21, 2026 | 1.1% | 96.7% | 2.2% | 1 | 2 |
| Tue Oct 20, 2026 | 3.3% | 95.7% | 1.1% | 1 | 1 |
| Mon Oct 19, 2026 | 2.2% | 97.8% | 0.0% | 1 | 0 |
| Fri Oct 16, 2026 | 0.0% | 75.0% | 25.0% | 0 | 2 |
| Thu Oct 15, 2026 | 0.0% | 100.0% | 0.0% | 0 | 0 |
| Wed Oct 14, 2026 | 3.3% | 65.2% | 31.5% | 1 | 4 |
| Tue Oct 13, 2026 | 0.0% | 100.0% | 0.0% | 0 | 0 |
| Mon Oct 12, 2026 | 2.2% | 95.7% | 2.2% | 2 | 2 |
| Fri Oct 9, 2026 | 0.0% | 100.0% | 0.0% | 0 | 0 |
| Thu Oct 8, 2026 | 0.0% | 88.0% | 12.0% | 0 | 4 |
| Wed Oct 7, 2026 | 0.0% | 76.1% | 23.9% | 0 | 1 |
| Tue Oct 6, 2026 | 19.6% | 80.4% | 0.0% | 6 | 0 |
| Mon Oct 5, 2026 | 22.8% | 75.0% | 2.2% | 3 | 1 |
| Fri Oct 2, 2026 | 8.8% | 91.2% | 0.0% | 4 | 0 |
| Thu Oct 1, 2026 | 6.5% | 87.0% | 6.5% | 1 | 5 |
| Wed Sep 30, 2026 | 0.0% | 97.8% | 2.2% | 0 | 2 |
| Tue Sep 29, 2026 | 2.2% | 96.7% | 1.1% | 1 | 1 |
| Mon Sep 28, 2026 | 0.0% | 97.8% | 2.2% | 0 | 2 |
| Fri Sep 25, 2026 | 6.0% | 94.0% | 0.0% | 2 | 0 |
| Thu Sep 24, 2026 | 2.2% | 90.2% | 7.6% | 1 | 6 |
| Wed Sep 23, 2026 | 0.0% | 84.8% | 15.2% | 0 | 3 |
| Tue Sep 22, 2026 | 0.0% | 97.8% | 2.2% | 0 | 1 |
| Mon Sep 21, 2026 | 57.6% | 42.4% | 0.0% | 3 | 0 |
| Fri Sep 18, 2026 | 29.4% | 64.7% | 5.9% | 2 | 3 |
| Thu Sep 17, 2026 | 8.7% | 91.3% | 0.0% | 2 | 0 |
| Wed Sep 16, 2026 | 0.0% | 95.7% | 4.3% | 0 | 1 |
| Tue Sep 15, 2026 | 4.3% | 77.2% | 18.5% | 2 | 3 |
| Mon Sep 14, 2026 | 1.1% | 97.8% | 1.1% | 1 | 1 |
| Fri Sep 11, 2026 | 11.6% | 88.4% | 0.0% | 6 | 0 |
| Thu Sep 10, 2026 | 1.1% | 87.0% | 12.0% | 1 | 2 |
| Wed Sep 9, 2026 | 0.0% | 88.0% | 12.0% | 0 | 4 |
| Tue Sep 8, 2026 | 0.0% | 95.7% | 4.3% | 0 | 3 |
| Mon Sep 7, 2026 | 1.3% | 94.7% | 3.9% | 1 | 1 |
| Fri Sep 4, 2026 | 2.9% | 91.3% | 5.8% | 1 | 1 |
| Thu Sep 3, 2026 | 15.2% | 84.8% | 0.0% | 4 | 0 |
How often is ES RSI above 70 on the 15 minute chart? Across the 37 recorded sessions from September 3 to October 23, 2026, the 15 minute RSI on ES sat above 70 for 5.8% of the session on average, entering that zone about 1 separate times in a typical session.
How much of the session does ES RSI spend below 30? On average 6.4% of each 15 minute session, over a median of 1 separate visits. The most was 31.5% on October 14, 2026.
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