Overbought and oversold
Overbought and oversold describe a price that has risen or fallen too fast compared with its recent history. They are usually measured with oscillators such as RSI and the stochastic.
How it works
For RSI, overbought usually means above 70 and oversold below 30. For the stochastic, above 80 and below 20. These zones say the move was unusually strong and may be stretched. But overbought does not mean about to fall.
In a range, an oscillator leaving the overbought or oversold zone often lines up with a turn at the edge of the range. In a strong trend it is different: RSI can stay above 70 for weeks while price keeps climbing. That is why many traders shift the levels: in an uptrend they watch 40–80, in a downtrend 20–60.
These readings are most useful together with other signals: a level, a divergence, a reversal candle pattern. Being overbought is a reason to be careful with new buys, not a reason to short.
BTC rises from $55,000 to $66,000 in a week and the daily RSI reads 82. Price climbs for three more days to $69,000 while RSI stays above 75. Anyone who shorted on the first move above 70 would be down about 4.5%.
The main mistake is trading against the trend only because an indicator is overbought or oversold. In a strong move those zones mean strength. Wait for confirmation: the indicator leaving the zone, a divergence, or a break in structure at a strong level.
Questions and answers
What does overbought mean in simple terms?
It means price has risen too fast compared with its recent behavior. That does not necessarily mean it will drop right away.
What RSI levels mean overbought and oversold?
The standard is above 70 for overbought and below 30 for oversold. Some traders use 80 and 20 for stronger signals.
Should I buy when something is oversold?
You can consider it if there is confirmation: support, a reversal candle or a divergence. In a downtrend, oversold readings can last a long time.
Related terms
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Updated: 2026-10-19