chart signal · tested on 187 NSE stocks, 2021–2025

RSI above 70 (overbought): sell signal or strength?

RSI above 70 is called overbought. It means price has risen fast. Some traders read it as a warning of a pullback; others read it as a sign of strength.

What the data says
Signals counted
2,110
183 stocks
Higher after 12 days
53.4%
any day: 55.3%
Average 12-day move
+1.3%
any day: +1.2%

When “RSI overbought (above 70)” appeared, NIFTY 200 stocks were higher 12 trading days later 53.4% of the time, against 55.3% after any day: about the same as a random day. The typical size of the move was 5.7%, against 5.4% normally.

AfterHigherAverage moveMedian moveHigher after any day
5 trading days50.6%+0.5%0.0%53.9%
12 trading days53.4%+1.3%+0.6%55.3%
20 trading days57.4%+2.5%+1.5%56.8%

Year by year

YearSignalsHigher after 12 daysAny day
202125350.6%54.4%
202244349.7%52.1%
202371561.7%61.3%
202449049.8%53.7%
202520945.0%53.1%
Large cap only114453.9%
Mid cap only96652.8%

What it is

RSI above 70 is called overbought. It means price has risen fast. Some traders read it as a warning of a pullback; others read it as a sign of strength.

How we detected it

RSI (14) closes above 70, after not being above 70 the day before.

How traders read it

Overbought is not the same as “about to fall”. Strong stocks can stay overbought for weeks. Look for divergence or a break in trend before treating it as a warning.

How to use this

A signal is a probability, not a promise

Even the most reliable signal in this study was followed by the opposite move 37% of the time. A signal tilts the odds; it doesn’t decide the outcome.

Signals work better when they agree with the trend and with each other. Whatever the signal, decide your stop-loss before you act.

Practise spotting it, free

The RSI chapter teaches this signal in five minutes, then you call real NSE charts and get graded on your reasoning.

Common questions

Does the RSI overbought (above 70) signal work on Indian stocks?

When “RSI overbought (above 70)” appeared, NIFTY 200 stocks were higher 12 trading days later 53.4% of the time, against 55.3% after any day: about the same as a random day. The typical size of the move was 5.7%, against 5.4% normally. No single signal is reliable on its own; traders combine it with the trend and manage risk with a stop-loss.

How often did stocks rise after this signal?

Across 2,110 signals on 183 NIFTY 200 stocks (2021–2025), the price was higher after 5, 12 and 20 trading days 50.6%, 53.4%, 57.4% of the time. After any day it was 53.9%, 55.3%, 56.8%.

How is “RSI overbought (above 70)” defined here?

RSI (14) closes above 70, after not being above 70 the day before.

How these numbers were made

We ran the same signal detector MarketSeekho uses to grade players over every trading day of 187 NIFTY 200 stocks, Jan 2021 to Oct 2025, using NSE end-of-day prices (1,54,833 stock-days). We counted the first day a signal appeared, then ignored the same signal on the same stock for 12 trading days so results don’t overlap. Windows with splits, bonuses or trading halts were left out.

“Any day” is the baseline: the same measure after every day in the data, signal or not. It matters because 2021–2025 was mostly a rising market, so stocks were higher after 12 days more often than not anyway. Past results don’t predict future ones, and this is not investment advice.