Technical IndicatorsMyth-breaking9 min read

Should You Short Overbought Stocks? Why “RSI Above 70” Shorts Get Squeezed

Updated · BreakPoint Research Desk

Quick answer

Shorting a stock only because it is “overbought” usually backfires because overbought readings describe strong momentum, and strong momentum tends to persist. Stocks in active uptrends can stay overbought for days or weeks, and every short entered against them adds future buying when the stop-loss is hit — fuel for a short squeeze.

Traders who short strength wait for evidence that the trend has changed: a failed breakout, a lower high, a break of support or VWAP that holds, and weakness in the broader market or sector. The indicator reading alone is not that evidence.

Key takeaways

  • Overbought means strong, not finished.
  • A short against a strong uptrend fights both momentum and the buyers who keep entering.
  • Short stop-losses are buy orders — clusters of them can accelerate a rally.
  • Short setups need structure: lower highs, broken support, rejection at a level.
  • Weak stocks in weak markets are usually better short candidates than strong stocks that look stretched.

Why overbought stocks keep going up

705030above 70 while price keeps risingpullback holds 40–50RSI (14) · illustrative
In a strong uptrend RSI stays above 70 while price keeps rising. Each “overbought” reading was a potential losing short.
  • Momentum persists — stocks moving strongly often attract more buyers, including trend followers and institutions building positions over time.
  • Catalysts re-rate the stock — results, orders or sector news change what buyers are willing to pay.
  • Indicators lag — RSI and similar tools describe what has happened, not what will happen.
  • Shorts become buyers — every stop-loss above the price is a buy order waiting to be triggered.

How a short squeeze happens

short stop-lossshort: “RSI overbought”stop hitcovering adds fuelOverbought described strength, not an exhaustion signal · illustrative
The squeeze sequence: a short on “overbought”, the trend continues, stops are hit, and the covering adds buying pressure.
  1. Shorts enter on the “too high” idea

    Several traders short the same stretched stock, placing stops above recent highs.

  2. Price makes another high

    Buyers keep coming; the first stops are hit.

  3. Stops become market buy orders

    Covering pushes price higher, triggering the next group of stops.

  4. The move accelerates

    The rally becomes steepest exactly when shorts are most desperate to exit.

What to check before shorting a strong stock

✅ Short only with evidence of change

  • The index and the stock’s sector are weak, not strong.
  • A breakout has failed — price closed back below the breakout level.
  • A lower high has formed after the peak.
  • Support (or VWAP intraday) is broken and a retest fails.
  • There is a clear level for the stop, close enough to size sensibly.
  • Short selling fits your account, experience and the instrument’s rules.
Instead of shorting…Consider…
The day’s top gainer because it is “up too much”The weakest stock in a falling sector
A stock at an RSI of 80 in an uptrendA stock failing at a lower high below a falling average
The first red candle after a rallyA confirmed break of support that fails its retest

Worked example: the same stock, two shorts

Hypothetical stock after results

A stock jumps 8% at the open after strong results, sector leading, RSI above 80. Trader A shorts at 10:00 because it is overbought. Trader B waits.

Open move+8%
RSI80+
Trader AShort at 10:00
By 1:00 pm+12%, A stopped
Two days laterLower high, support breaks
Trader BShort on failed retest

How to read it

Trader A fought a fresh catalyst, a leading sector and strong momentum, and was squeezed. Trader B waited until the stock actually showed weakness — a lower high and a broken support that failed on retest — and shorted with a nearby stop above the retest. B may still lose, but the trade has structure behind it.

The takeaway

Shorting what is weak beats shorting what is strong.

Common mistakes traders make

  1. Shorting news-driven rallies on day one

    Fresh catalysts attract buyers for longer than expected.

  2. Wide or no stops on shorts

    Squeezes can move far and fast; losses on shorts are theoretically unlimited.

  3. Averaging up a losing short

    Adding to a short as price rises concentrates risk at the worst time.

  4. Ignoring sector strength

    A leading sector keeps lifting its members.

  5. Confusing a pullback with a reversal

    One red day in an uptrend is usually a rest, not a top.

What to combine with any short decision

  • Index trend — shorts work best when the market is falling.
  • Relative strength — short the laggards, not the leaders.
  • Price structure — lower highs, broken supports, failed breakouts.
  • RSI divergence — a warning only, confirmed by price.

How BreakPoint helps you short weakness, not strength

The simplest improvement is to look at the other end of the list. BreakPoint shows where weakness sits in the market so short ideas start there. It gives no trade calls, and how its tools select stocks stays private.

The downside list and weak industries

Market Mover’s downside movers and industry trend show where selling is concentrated today.

How to use Market Mover →

Is the market falling?

Index Trend shows index direction across timeframes — the main filter for any short.

How to use Index Trend Dashboard →

Supports breaking

The HLC Scanner shows stocks breaking below their previous day low or close.

How to use HLC Analytics →

Good to know

The BreakPoint mobile app lets you check the downside board before you act on an urge to short a gainer.

Who should use this approach?

Intraday traders who short

Especially those who short the day’s biggest gainers.

Beginners

A key habit to avoid while learning; many start with long-only trading.

Swing traders

Relevant when exiting or hedging longs that look stretched.

F&O traders

The same logic applies to buying puts or selling calls against strong trends.

Limitations and risks

Read before you trade
  • Some overbought stocks do reverse sharply; the point is that the reading alone is not a reliable signal.
  • Short selling carries unlimited theoretical risk and instrument-specific rules.
  • Structure-based shorts also fail.
  • Examples are hypothetical.

Which BreakPoint plan fits the way you trade?

Pick by workflow, not by feature count. You can change plans later.

Learning

Free account

Study past “overbought” charts and count how often shorting them would have worked, using the free guides.

Free

See details →

Active intraday trader

Breakpoint Pro

Breakpoint Pro includes Market Mover’s downside view, Index Trend and the HLC Scanner.

₹1,299 / 28 days · ₹3,299 / 84 days

See details →

F&O trader

Breakpoint Pro 365

Pro 365 adds OptionX and the F&O dashboard for short-side derivatives context.

₹7,999 / 180 days · ₹15,999 / 365 days

See details →

Still unsure? The 60-second product advisor asks four questions about how you trade and recommends one product. Prices as listed on the plans page; always confirm there before paying.

Frequently asked questions

Shorting only because a stock is overbought is usually a losing approach, because overbought conditions reflect strong momentum that can persist. Traders who short look for evidence of a change in trend first.

Look at the other end of the board

Open Market Mover’s downside list and Index Trend before any short. Weak stocks in weak markets are where shorts have a tailwind.

BreakPoint tools open inside your account. If you are not signed in you will be asked to sign in first, and access depends on your active plan. The lessons and guides are free.

Scan the market from your phone — get the BreakPoint app

Keep learning

Terms used here: RSI (Relative Strength Index) · Momentum · Breakdown · Stop-Loss · Support & Resistance

This article is for education only. It is not investment advice or a recommendation to buy or sell any security. Trading involves risk of loss; examples are hypothetical and past behaviour of any pattern does not guarantee future results.