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Pump-and-dump scams: how they work and the red flags

Tips in groups and channels can be traps. Here is how a pump-and-dump works and how to spot one. Education only.

Spot the Trap cover
Education only. Not investment advice.ProShelf is not registered with SEBI as an investment adviser or research analyst. These books give no tips, calls or recommendations to buy or sell anything. Charts use invented example data or past events at least three months old. Trading, especially futures and options, can lose you money: SEBI's own studies found that about 9 in 10 individual F&O traders made losses (FY22–FY24).
In a pump-and-dump, people connected to a scheme push up a thinly traded share, promote it to the public, and sell to the buyers they attract. When the selling ends, the price collapses.
The idea

The four stages

StageWhat the scheme doesWhat the public sees
AccumulateBuys quietly in a thinly traded shareNothing much
PushTrades between connected accounts to lift price and volumeA steady rise, rising volume
PromoteVideos, messages, ‘news’, targets, fake reportsExcitement, upper circuits, tips everywhere
DumpSells to the new buyers at high pricesPrice stalls, then falls, often in lower circuits
The method

What it looks like on a chart

Diagram: What it looks like on a chart
From the book (Book 11, page 13)
Example (invented): Vindhyachal Agro, a small share normally trading about ₹3 lakh a day, rises from about ₹18 to ₹41 in five weeks on volume up to ten times normal, then falls to about ₹14.
Chart signWhy it matters
Steep rise with no company newsDemand coming from somewhere other than the business
Volume many times normal in a thin shareNew buyers arriving, often from promotion
Repeated upper circuitsSmall supply, eager buyers; exits will be just as hard
High volume with little progress at the topDistribution: sellers meeting the crowd (Book 6)
Why it matters

Why late buyers lose most

Problem for late buyersWhy
Bought near the topPromotion peaks when the scheme wants to sell
Cannot get outLower circuits, few buyers, wide spreads (Book 1, Chapter 6)
Hold in hopeAnchoring to the buying price and the ‘target’ (Book 9)
Average downAdding to the share the scheme is leaving (Book 3)
Use it

Spotting one early

CheckWarning sign
Size and liquiditySmall company; normal trading of a few lakh rupees a day
Company announcementsBig claims in messages, nothing on the exchange website
Price and volumeSteep rise, many times normal volume, repeated upper circuits
Exchange surveillanceThe share under a surveillance measure or price band change (Book 1, Chapter 6)
Who is promotingUnregistered channels, groups, ‘analysts’ with targets
Pressure‘Buy before Monday’, ‘last chance’, ‘operators are entering’
Try it yourself

Questions from the worksheet: Check a hot share

Before buying any small share someone recommends, fill in this row. Any ‘bad’ answer is a reason to stop.

In three lines

What to remember

  1. Pump-and-dumps accumulate, push, promote and dump a thin share; the public is the exit.
  2. In the Sadhna Broadcast case, SEBI found false video claims and connected trading; 59 were barred in 2025.
  3. Big claims with no exchange announcement, volume spikes and pressure are reasons not to buy.
Pump-and-dump
Raising a price artificially, then selling to the buyers attracted.
Connected trades
Trades between related parties that create a false picture of demand.
Corporate announcement
Official company news filed with the stock exchanges.

This article is adapted from the book. Examples marked “Example” use invented names and numbers; company stories are based on public sources listed in the book. Education only: not investment, tax or legal advice.