Crypto Pump Groups Drove at Least $825 Million in Trading, WSJ Analysis Found

On August 5, 2018, The Wall Street Journal published a data investigation that identified 175 coordinated cryptocurrency “pump-and-dump” signals involving 121 digital coins. The signals appeared in publicly accessible Telegram and Discord groups between January 1 and late July 2018. According to the Journal’s calculations, the observed episodes generated at least $825 million in trading activity.

That figure measured transaction activity associated with the identified episodes—not organizer profits, investor losses or money proven to have been obtained illegally. The investigation nevertheless supplied unusually concrete evidence for a market-integrity risk that regulators had already described: anonymous groups could concentrate buyers in a thinly traded coin, produce a rapid price increase and leave later participants exposed when early buyers sold.

How the investigation worked

The Journal reported finding 105 groups that advertised cryptocurrency trading signals. On June 29, it determined that 63 had active rooms with publicly accessible chat histories. Those rooms collectively had approximately 236,000 followers at the end of June, although the published methodology did not establish how many followers were unique people, automated accounts or members shared between groups.

Reporters reviewed moderator messages directing members to trade a named coin at a specified time and exchange. They matched 175 such messages to CoinMarketCap pricing, volume and market-capitalization data collected at five-minute intervals from January 1 through August 2. Changes were measured from two hours before each signal to two hours afterward.

The resulting sample was substantial but incomplete. Private rooms were not observable, the identities and positions of anonymous organizers generally remained unknown, and CoinMarketCap aggregated information from exchanges with differing liquidity and reporting practices. Five-minute observations could also miss price changes occurring within seconds. The findings therefore documented the schemes the Journal could identify; they did not measure every coordinated trade or prove that the entire cryptocurrency market moved in the same way.

A localized pump in minutes

For two selected signals, the Journal supplemented aggregated data with one-minute Binance trading records. Its July 1 Cloakcoin example showed the coin rising 50% to $5.77 after a Telegram signal, then falling by almost one dollar within two minutes. The Journal counted 6,700 trades worth $1.7 million, compared with virtually no trading during the preceding hour.

Binance’s ten most-traded bitcoin pairs barely moved during that episode, according to the same analysis. That comparison mattered: it suggested a concentrated disturbance in a relatively small coin rather than a market-wide rally. The Journal also said it could not determine organizer profits because exchanges did not publish individual trading histories.

The regulatory boundary on August 5

The Commodity Futures Trading Commission had issued a customer advisory on February 15, 2018 warning specifically about pump-and-dump schemes in thinly traded or newly issued virtual currencies and tokens. The agency said it had received complaints from customers who lost money in such schemes.

The CFTC described its oversight of virtual-currency cash markets as limited while asserting general anti-fraud and anti-manipulation authority over interstate commodity transactions. That distinction prevented a simple conclusion that every coin, exchange or promotional message fell under one uniform regulatory regime. Depending on the asset and conduct, securities, commodities, fraud and other laws could present different jurisdictional questions.

Why the findings mattered

The August 5 investigation converted a broadly recognized risk into an attributable dataset with a disclosed observation window. It demonstrated how messaging applications, anonymous organizers and low-liquidity exchange listings could compress an old manipulation strategy into a few minutes.

For institutions evaluating cryptocurrency markets in 2018, the record raised questions about exchange surveillance, reported volume, benchmark reliability and the quality of price discovery. It did not establish that every identified participant committed a prosecutable offense, that $825 million was stolen, or that heavily traded assets such as bitcoin were manipulated by the documented signals. Its strongest conclusion was narrower: coordinated groups were openly directing trades, and their signals coincided with measurable bursts of activity in selected digital coins.