A pump-and-dump is a securities-fraud scheme: promoters use false or misleading claims to spur demand for a stock, then sell their own shares into that demand. When the promotion ends, the price typically falls, exposing later buyers to losses. The sequence matters; a stock falling after enthusiastic commentary does not, by itself, prove fraud.
How does a pump-and-dump work?
- Misleading promotion: Promoters circulate false or misleading claims about a stock, sometimes presenting a supposedly major development or privileged information.
- Induced buying: The claims attract buyers and create demand that can push the stock price higher.
- Promoter sales: Promoters sell their own holdings into the demand their campaign generated.
- Typical price fall: Once promotion stops and the buying pressure fades, the price typically falls. People who bought during the hype may be left with losses.
“Pump” describes the promotion and demand-building; “dump” describes promoters selling their holdings. The scheme is defined by this combination of misleading promotion and selling—not merely by a stock’s rise or fall.
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Where can the promotion appear?
Stock pitches can circulate through social media, email, chat rooms, investment websites, newsletters, online advertisements, message boards, or other media. The channel alone does not establish that a promotion is fraudulent. In a 2013 press release, Lori Schock, then Director of the SEC’s Office of Investor Education and Advocacy, said: “Investors should always be wary of unsolicited investment offers in the form of an e-mail from a stranger.”
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What are the warning signs?
Warning signs can include pressure to buy quickly, claims of “inside” or privileged information, glowing promotional claims, or hype in chat rooms and message boards. A newsletter presented as an unbiased recommendation may also warrant scrutiny if it is promoting a stock. These signals are reasons to investigate, not proof on their own that a specific tip or promoter is committing fraud.
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- Check who is making the recommendation and whether the source has a financial interest in the stock.
- Research the company and independently verify important claims rather than relying on the promotion.
- Be cautious if the pitch discourages investigation or insists that you act before an opportunity disappears.
- Do not make an investment decision solely because of a social-media recommendation.
The SEC’s February 6, 2026 investor alert on social media and stock-tip scams also discusses deceptive recommendations and impersonation risks.
Are pump-and-dump schemes limited to microcap stocks?
No. Microcap stocks may be especially vulnerable when public information is limited, but pump-and-dump schemes are not confined to microcaps. The SEC’s 2026 alert makes that distinction explicit. A stock’s size alone neither proves that a scheme is occurring nor rules one out.
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Does every heavily promoted stock tip count as a pump-and-dump?
No. Enthusiastic commentary or a price decline does not by itself establish a pump-and-dump. The relevant conduct is misleading promotion intended to create demand followed by promoters selling into that demand. Compensation or a promoter’s financial interest can be relevant context: the SEC has described cases involving undisclosed compensation for stock promotion. But any particular post, issuer, transaction, or person’s conduct requires its own facts and legal analysis.
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Pause before acting, identify the source, research the opportunity, and verify claims independently. Treat urgency as a reason to slow down rather than a reason to skip those checks. The SEC’s pump-and-dump overview and its internet stock-scam guidance offer investor education. The latter was last reviewed or updated February 1, 2011, so it is background guidance rather than a current market update. This explanation is general information, not individualized investment or legal advice; it does not determine whether any specific conduct violates securities law.
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