Founder, Underpitch · Educational material on market structure, chart reading and risk awareness.
3 July 2026
RSI is a bounded momentum oscillator, usually calculated over 14 periods, that compares average gains with average losses. Readings above 70 or below 30 show strong recent momentum; they do not automatically mean price must reverse.
Key points
- Overbought can remain overbought in a strong trend.
- RSI ranges shift with market regime.
- Divergence warns of weakening momentum, not timing.
- Price structure should confirm oscillator signals.
How RSI is interpreted
RSI ranges from 0 to 100. Strong uptrends often hold higher RSI floors, while downtrends may fail near lower ceilings.
Overbought and oversold
These labels describe momentum extremes. Selling only because RSI is above 70 can be costly in a persistent trend.
Divergence
Bearish divergence occurs when price makes a higher high while RSI makes a lower high. It shows slowing momentum but can persist before reversal.
Failure swings and range shifts
RSI breaking its own swing structure or shifting from a bullish range to a bearish range can add context to price analysis.
Worked Indian-market example
A stock breaks resistance and RSI moves to 78 on high volume. Rather than shorting, a trader treats the high RSI as strong momentum and waits for price structure to weaken before considering reversal.
Quick reference
| Concept | What it shows | Practical meaning |
|---|---|---|
| Above 70 | Strong recent upside momentum | Not automatic sell |
| Below 30 | Strong recent downside momentum | Not automatic buy |
| Bullish divergence | Price lower low, RSI higher low | Possible weakening downside |
| Range shift | RSI support/resistance changes | Possible regime change |
Risks and limitations
- Divergence can appear repeatedly before reversal.
- RSI settings can alter signals.
- Oscillators whipsaw in choppy markets.
- Using RSI without trend context creates counter-trend trades.
Frequently asked questions
Is RSI above 70 bearish?
No. It may indicate strong momentum.
What RSI period is best?
Fourteen is common, but the setting should match time frame and testing.
Does divergence guarantee reversal?
No. It is a warning, not a trigger.
Can RSI be used for long-term charts?
Yes, on weekly or monthly data, but signals develop slowly.
Sources and methodology
Technical analysis is a market-study framework, not a promise of returns. Verify exchange rules, contract specifications and risk disclosures from official sources before acting.
This page is for education and chart-reading awareness. It is not a personalised investment, trading, legal or tax recommendation. Technical setups can fail and market losses can exceed the planned amount because of gaps, leverage, liquidity and execution.