Wash trading
Wash trading is buying and selling the same asset with no change in beneficial ownership and no market risk, so that a trade prints publicly and creates a false impression of activity or price.
How does wash trading work?
Wash trading works because the public trade record does not show who traded, only that a trade happened. A print of ten thousand shares at $4.10 looks the same whether it represents a pension fund buying from a hedge fund or one person moving stock from their left hand to their right.
The mechanic is deliberately simple.
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Open, or control, two accounts. They may be at the same broker or different ones, in different names, or held through nominees. What matters is that the same person or group benefits from both.
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Enter matching orders. A buy from one account and a sell from the other, for the same quantity, timed so that they meet each other rather than a third party. On a thin book this requires no particular skill; on a liquid one it requires care about timing and price.
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Let the print do the work. The trade appears on the public tape with a price and a size. Volume statistics increase. Charting services show activity. Screeners that filter for unusual volume surface the name.
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Repeat. One print proves nothing. A pattern of prints creates an apparent market.
No position was taken. No risk was borne. The only real costs are commissions and fees — and on venues that pay maker rebates, even those can be negative, which is a structural invitation to the practice.
A worked example with real numbers
A promoter holds four million shares of a thinly traded company quoted at $0.40, with average daily volume of 30,000 shares. Nobody is looking at it, and there is no bid to sell four million shares into.
Over ten sessions, the promoter runs 40 round trips a day between two accounts, 5,000 shares each, stepping the price gently upward.
| Metric | Before | After ten sessions |
|---|---|---|
| Average daily volume | 30,000 | 230,000 |
| Quoted price | $0.40 | $0.62 |
| Distinct participants | ~12 | ~12 plus new arrivals |
| Promoter’s net position change | — | 0 |
| Round-trip cost at $0.002/share | — | ~$8,000 |
The promoter has spent about eight thousand dollars and changed nothing about the company. What they have manufactured is a screen appearance: a stock up 55% on eight times normal volume. That appearance is the product, and it is what draws in the buyers the promoter will actually sell their four million shares to.
Note the asymmetry that makes this worth doing. The cost is fixed and small. The payoff is the ability to liquidate a position that previously had no market at all. Wash trading is rarely the scheme; it is the machinery that makes another scheme possible.
Why is wash trading illegal?
Wash trading is illegal because it puts false information onto the public record of transactions, and because everyone downstream — other traders, index providers, valuation agents, regulators — treats that record as a factual account of what occurred.
In securities, Exchange Act § 9(a)(1) is unusually specific. It prohibits effecting transactions in a security that involve no change in beneficial ownership, and it prohibits entering orders knowing that a matching order of substantially the same size and price has been or will be entered by or for the same or an affiliated party, where the purpose is to create a false or misleading appearance of active trading. The section was written in 1934 in direct response to the stock pools of the preceding decade, and the drafting has aged well because the technique has not changed.
Rule 10b-5 and Securities Act § 17(a) reach the same conduct as deception more generally, which matters because § 9 has historically been read to apply to registered securities.
In commodities and futures, § 4c(a) of the Commodity Exchange Act prohibits wash sales, accommodation trades and fictitious sales outright, and CFTC Rule 180.1 supplies the fraud-based route. Every major futures exchange also prohibits wash trading in its own rulebook and enforces it through disciplinary proceedings, which is why many wash trading matters never reach a federal agency at all.
The crypto position depends on characterisation. Where a token is a security, the securities provisions apply. Where it is a commodity and the trading occurs in derivatives, the CFTC’s authority is clear, and the agency has brought wash trading actions against digital-asset platforms. Spot trading on a venue outside any US registration perimeter is the genuinely hard case: the conduct is plainly deceptive, and the question is whose rules reach it.
| Provision | Citation | Primary text |
|---|---|---|
| Securities Exchange Act — manipulative transactions | 15 U.S.C. § 78i(a)(1) | Read the text |
| Commodity Exchange Act — wash sales prohibition | 7 U.S.C. § 6c(a)(2) | Read the text |
| CFTC Rule 180.1 — fraud-based manipulation | 17 C.F.R. § 180.1 | Read the text |
| SEC Rule 10b-5 | 17 C.F.R. § 240.10b-5 | Read the text |
Which real enforcement actions have alleged wash trading?
This library holds 90 enforcement actions tagged wash trading. The table shows the largest by civil penalty together with the most recently filed. Every row links to a page carrying the regulator's own release and, where one was published, the complaint.
| Action | Agency | Filed | Penalty | Status |
|---|---|---|---|---|
| CFTC v. The Royal Bank of Scotland plc and RBS Securities Japan Limited (benchmark submission rigging, 2013) | CFTC | 2013-02-07 | $325m | judgment |
| CFTC v. unnamed respondents (cash vs derivatives schemes, 2022) | CFTC | 2022-10-20 | $41m | judgment |
| CFTC v. Royal Bank (wash trading, 2014) | CFTC | 2014-12-19 | $35m | judgment |
| SEC v. Betterment LLC (wash trading, 2023) | SEC | 2023-04-18 | $9m | settled |
| CFTC v. Coinbase Inc. (exchange wash trading, 2021) | CFTC | 2021-03-19 | $6.5m | judgment |
| SEC v. Gotbit Consulting LLC a/k/a Gotbit Hedge Fund and Fedor Kedrov (wash trading, 2026) | SEC | 2026-08-03 | — | judgment |
| SEC v. Canaccord Genuity LLC (marking the close, 2026) | SEC | 2026-03-06 | — | settled |
| SEC v. Justin Sun, Tron Foundation Limited, BitTorrent Foundation Ltd., Rainberry, Inc., and DeAndre Cortez Way (paid stock promotion, 2026) | SEC | 2026-03-05 | — | judgment |
How does wash trading get detected?
Detection is an identity problem before it is a trading problem. The pattern — offsetting trades, no net position — is easy to compute. Establishing that both sides are the same interest is the work.
Account linkage. Common beneficial owners, shared funding sources, common authorised traders, identical addresses, shared devices and IP addresses, and sequential account numbers opened on the same day. Regulators build a linkage graph and then look for trading within it.
Net-position-versus-volume analysis. For a linked group, compute total volume traded and total net position change over a period. Genuine trading changes positions; wash trading does not. A group with enormous volume and near-zero net position change across many sessions is the core statistical signature.
Timing coincidence. Buy and sell orders of identical size entered within a few milliseconds at a price where no third party realistically had the opportunity to interpose. On a liquid venue this requires either luck or coordination, and it recurs far too often for luck.
Fee and incentive analysis. Where a venue pays rebates or awards status by volume, regulators compute whether the round trips were profitable in themselves. Trading that only makes money through the fee schedule is trading done for the fee schedule.
On crypto venues, the reconciliation is different: reported trade volume is compared against observable on-chain settlement, order book depth, and the venue’s own withdrawal flows. Reported volumes that cannot be reconciled with any of these are the basis of most published estimates of crypto wash trading.
- Trades between accounts sharing a beneficial owner, an address, a funding source or a device fingerprint.
- Buy and sell orders of identical size entered within milliseconds at a price no third party could realistically have interposed on.
- Volume in an instrument that is high while net position change across the participant group is approximately zero.
- Repeated round-trip patterns that generate fees without generating any economic exposure.
- On a crypto venue, reported volume that is inconsistent with observable on-chain settlement or with order book depth.
What penalties does wash trading actually attract?
The numbers below are computed from this site's own case records at build time, not quoted from a secondary source. They change whenever a new action is added to the library.
- Actions recorded
- 90
- Median penalty
- $600k
- Largest penalty
- $325m
- Criminal parallel
- 22%
- Median sentence
- 19y 7m
What are the red flags?
- Reported volume that is large relative to the number of distinct participants or to the free float.
- Trading that is heaviest precisely when a listing, index inclusion or ranking is being assessed.
- An exchange whose fee schedule rebates makers more than it charges takers, making round trips profitable in themselves.
- Price series with high volume but almost no volatility and no order book depth to match.
For an investor, the most useful single check is the relationship between volume and the number of distinct participants. Genuine interest in a small company brings new holders. Manufactured interest brings volume without them, and in US markets, changes in the holder base eventually show up in filings.
What wash trading is not
It is not an accidental self-match. Firms cross with themselves occasionally; venues provide self-match prevention precisely because this is a known operational reality. What matters is intent and repetition.
It is not market making. A market maker quoting both sides is taking real risk on both sides and will end sessions with real positions. The economic substance is opposite.
It is not a tax wash sale. The two share a word and nothing else. One is a rule about deducting losses; the other is a rule about deceiving markets.
Frequently asked questions about wash trading
- What makes a trade a wash trade?
- The absence of any change in beneficial ownership and any assumption of market risk. If the same person, or people acting together with a common interest, sit on both sides, nothing economic happened — but a price and a volume printed publicly as though it did.
- Is a wash trade different from a wash sale for tax purposes?
- Yes, completely. A tax wash sale is selling at a loss and rebuying a substantially identical security within thirty days; the consequence is that the loss is disallowed. A manipulative wash trade is about deceiving the market, not about deducting a loss.
- Can wash trading happen by accident?
- Yes. Two desks at the same firm, or two funds with a common manager, can cross unintentionally. Venues run self-match prevention for exactly this reason, and an accidental self-match handled properly is a compliance matter rather than an enforcement one.
- Why would anyone wash trade if they make no money on the trade?
- Because the objective is elsewhere: to create the appearance of liquidity, to earn fee rebates or trading-volume incentives, to hit an exchange listing threshold, to generate a price for valuation purposes, or to draw others into a position they intend to sell.
- Is wash trading common in crypto?
- Multiple academic studies have found reported volumes on some unregulated venues to be substantially inflated. Because those venues self-report and are not subject to an order audit trail, the practice is easier there and harder to measure precisely.
- What law prohibits wash trading?
- In securities, Exchange Act section 9(a)(1) prohibits transactions involving no change in beneficial ownership, and Rule 10b-5 reaches the deception. In futures, the Commodity Exchange Act prohibits wash sales expressly. Venue rules prohibit it independently.
- How do regulators prove common beneficial ownership?
- Through account opening records, funding flows, shared addresses and devices, common authorised traders, and communications. On a venue with a proper audit trail this is usually straightforward; across offshore venues it can be the hardest part of the case.
- Does wash trading move the price?
- It can, but it need not. Its primary effect is on apparent volume, which many participants use as a proxy for genuine interest. Painting the tape is the variant aimed specifically at creating a price impression.
- What is self-match prevention?
- A venue feature that stops orders from the same participant or account group from executing against each other, cancelling one or both instead. Its existence is why unintentional self-matching on a major venue is now rare.
- Is providing liquidity to your own token a wash trade?
- Not necessarily. Seeding a market with genuine two-sided quotes at risk is market making. It becomes a wash trade when the two sides are the same interest and no risk is ever taken — the test is economic substance, not the label on the desk.
What techniques are related to wash trading?
Terms defined on this page
Sources
- Securities Exchange Act § 9 — prohibition against manipulation of security prices — Cornell Legal Information Institute
- Commodity Exchange Act § 4c — prohibited transactions — Cornell Legal Information Institute
- CFTC Rule 180.1 — Electronic Code of Federal Regulations
- SEC Rule 10b-5 — Electronic Code of Federal Regulations