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pump-and-dump

British

noun

the practice of buying shares, generating favourable publicity about them, especially on the internet, then selling them when the price accordingly rises

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

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pump-and-dump

The people who stand to benefit most from less timely reporting include pump-and-dump artists and quick-buck penny-stock promoters.

From The Wall Street Journal ● Jul. 26, 2026

Wall Street’s stamp of legitimacy fuels suspected pump-and-dump schemes.

From MarketWatch ● Jan. 30, 2026

Regulators are investigating small-capitalization IPOs on Nasdaq due to concerns over potential pump-and-dump frauds.

From Barron's ● Dec. 30, 2025

Yes, a straight-up pump-and-dump scheme “to make sure the TRX price is at some level Justin wants.”

From Slate ● Dec. 3, 2024

Earlier this month, the House Committee on Ethics ordered him to pay more than $15,000 for his role in promoting a meme coin, in a "pump-and-dump" cryptocurrency scheme.

From Salon ● Dec. 16, 2022

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023