Educational reference. Measured from 288 recorded 5m bars of BTCUSD (Bitcoin) on Thursday, September 17, 2026.
RSI crossed above 70 5 separate times during the session, and the typical visit lasted 15 minutes. Across the whole session it sat above 70 for 5.6% of the time, between 30 and 70 for 92.4%, and below 30 for 2.1%.
| Band | Share of session | Bars | Separate visits | Median visit | Longest visit | |
|---|---|---|---|---|---|---|
| Above 70 | 5.6% | 16 | 5 | 15 min | 25 min | |
| Between 30 and 70 | 92.4% | 266 | 7 | 60 min | 505 min | |
| Below 30 | 2.1% | 6 | 2 | 15 min | 25 min |
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.
Here the reading entered overbought territory 5 times, with a median stay of 15 minutes and a longest of 25. 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.