15 USC 78i: Manipulation of Security Prices, Penalties, and Suits

Section 9 of the Securities Exchange Act of 1934, codified at 15 U.S.C. 78i, makes it illegal to move a security’s price through deceptive trading. The statute names specific tactics: wash sales, matched orders, misleading statements, and other schemes designed to trick investors into buying or selling. Violations can bring civil penalties above $236,000 per violation for individuals, criminal sentences up to 20 years, and private damages lawsuits by anyone who traded at a manipulated price.¹

What Securities and Markets the Statute Covers

Section 78i reaches securities traded on national exchanges like the New York Stock Exchange and Nasdaq, and in some circumstances over-the-counter markets. Covered instruments include stocks, bonds, options, and security-based swaps when someone uses them to distort prices.¹ The Securities Exchange Act gives the SEC authority to regulate trading on those registered exchanges.²

One boundary matters up front. U.S. securities laws do not automatically reach trades on foreign exchanges. In Morrison v. National Australia Bank Ltd. (2010), the Supreme Court held that Section 10(b) of the Exchange Act applies only to securities listed on domestic exchanges and to transactions in other securities that occur within the United States.³ If a trade did not happen on a U.S. exchange and was not otherwise a domestic transaction, federal manipulation law generally does not apply.

Conduct the Statute Prohibits

The statute lists the specific ways someone can create false signals in a market. Each subsection targets a different technique.

Wash Sales and Matched Orders

A wash sale is a trade in which the same person or entity is on both sides, so ownership never really changes. The only point is to fabricate trading volume. Section 78i(a)(1)(A) forbids this when done to create a false or misleading appearance of active trading.¹

Matched orders are the two-party version. Two traders coordinate to place buy and sell orders at roughly the same size, time, and price, manufacturing the appearance of genuine market interest. Section 78i(a)(1)(B) and (C) prohibit entering orders while knowing a matching order from the same or another party is being placed at the same time.¹

Pump-and-Dump and Other Misleading Statements

Section 78i(a)(4) bars false or misleading statements about a security made to induce others to buy or sell. Pump-and-dump schemes are the recurring example: promoters push a stock through misleading press releases, social media posts, or fabricated earnings data, then sell their own shares once the price rises, leaving later buyers holding overvalued stock.

Spoofing and Layering

Spoofing means placing large orders you never intend to fill, waiting for other traders to react, and canceling before execution. Layering is the same technique staged across multiple price levels. Both exploit electronic trading speed to fake supply or demand. The first federal criminal spoofing prosecution ended in the 2015 conviction of Michael Coscia, who received three years in prison for running automated algorithms that placed and canceled deceptive futures orders.⁴

Manipulative Short Selling

Short selling is legal. Using short sales to deliberately push down a stock’s price is not, and violates Section 9(a)(2) and Rule 10b-5. Naked short selling raises particular concerns: a trader sells shares without borrowing them or confirming delivery by settlement. Regulation SHO requires broker-dealers to locate shares before executing a short sale and to close out delivery failures within set timeframes. Selling short and intentionally failing to deliver in order to depress a price counts as manipulative conduct.⁵

The Stabilization Exception

Not every action that affects a stock’s price is manipulation. Section 78i(a)(6) allows legitimate price stabilization during a securities offering, under SEC rules. When a company issues new stock, an underwriter may place stabilizing bids to keep the share price from falling below the offering price during distribution.

Regulation M (Rule 104) sets the boundaries. A stabilizing bid cannot exceed the offering price, must yield priority to independent bids at the same level, and is barred in at-the-market offerings. The stabilizer must disclose the purpose of the bid to the exchange and to any purchaser before the transaction closes.⁶ Step outside those rules and the bid becomes manipulation like any other.

What Intent the Government Must Prove

Section 78i is not a strict-liability statute. Most of the acts prohibited in Section 78i(a) require proof of “purpose”: the person carried out the transactions to create misleading market signals or induce trading. For matched orders, the standard is “knowledge” that a corresponding order has been or will be placed. For misleading statements under subsection (a)(4), the person must have known or had reasonable grounds to believe the statement was misleading.⁷

Private plaintiffs face a stricter bar. Section 78i(f) only reaches a person who “willfully participates” in a manipulative act, so a damages case demands deliberate conduct, not negligence.⁷ Criminal prosecution under 15 U.S.C. 78ff requires proof of willfulness beyond a reasonable doubt.

Penalties for Violating Section 78i

The SEC enforces the statute using subpoenas, trading data analysis, and whistleblower tips. The Consolidated Audit Trail, established under SEC Rule 613 and operated by FINRA, records every order, cancellation, modification, and execution in U.S. equity and options markets.⁸ The agency can pursue administrative proceedings, which may result in trading suspensions or industry bans, or file civil actions in federal court seeking injunctions and disgorgement.

Civil penalties are tiered under Section 21(d)(3), with the top tier reserved for violations involving fraud and substantial investor losses. As of 2025, the top tier reaches $236,451 per violation for individuals and $1,182,251 per violation for entities, adjusted annually for inflation.⁹ The SEC also routinely seeks disgorgement of profits from the manipulation.

Criminal prosecution under 15 U.S.C. 78ff carries up to 20 years in prison and fines up to $5 million for individuals or $25 million for entities. Securities fraud provisions under Sarbanes-Oxley can push the maximum sentence to 25 years in certain cases. Sentencing turns on financial harm, the defendant’s role, and whether the conduct was part of a broader conspiracy. In SEC v. Milrud, a trader who ran a cross-border scheme with recruited traders in China and Korea pleaded guilty and received five years of probation with forfeiture of $285,000.¹⁰ Willful violation cases move to the Department of Justice for criminal prosecution, often with FBI involvement.¹¹

Firm-Level Liability for Failure to Supervise

A brokerage firm can be sanctioned even when the manipulation was carried out by an individual employee. Under 15 U.S.C. 78o(b)(4)(E), the SEC can censure, restrict, suspend, or revoke the registration of a broker-dealer that failed to reasonably supervise a person who violated the securities laws. The firm’s defense is that it had written procedures designed to prevent and detect such violations and that supervisors reasonably followed them.¹² In SEC v. Lek Securities Corp. (2019), a brokerage firm and its CEO settled charges tied to facilitating layering schemes, paying penalties and disgorgement totaling roughly $1.9 million.¹³

Suing as a Private Investor

Section 78i(f) gives investors an express right to sue. Anyone who bought or sold a security at a price affected by a willful violation of the statute can recover damages, measured as the difference between the price paid or received and what the price would have been without the manipulation. Courts may also award reasonable attorneys’ fees to either side.⁷ That express right is unusual; most private securities fraud claims proceed under Section 10(b) and Rule 10b-5, where courts implied the right of action.

Showing you overpaid is not enough on its own. In Dura Pharmaceuticals, Inc. v. Broudo (2005), the Supreme Court held that an inflated purchase price does not, by itself, establish the economic loss required for a securities fraud claim. The plaintiff must show that the manipulation proximately caused an actual loss, usually by proving the price fell once the truth came out.¹⁴ If the stock dropped for unrelated reasons, or the plaintiff sold before any correction and made a profit, the case fails on loss causation.

The Private Securities Litigation Reform Act also raises the bar at the pleading stage. The complaint must identify each allegedly misleading statement, explain why it was misleading, and set out particular facts creating a “strong inference” that the defendant acted with the required state of mind. If it falls short, the court must dismiss, and discovery is stayed while any motion to dismiss is pending. After a case ends, the court must review whether the parties complied with Rule 11(b); a frivolous filing triggers mandatory sanctions, with a presumption that the sanction is the opposing side’s attorneys’ fees and costs.¹⁵

Deadlines to Sue or Prosecute

Time limits vary by who is bringing the case. A private plaintiff suing under Section 78i(f) has one year from discovering the facts of the violation, and no more than three years from the violation itself. The one-year clock starts when the plaintiff knew or reasonably should have known about the manipulation; the three-year outer limit is absolute.⁷

SEC actions for civil penalties and disgorgement fall under a five-year statute of limitations set by 28 U.S.C. 2462, running from when the claim first accrued.¹⁶ Criminal prosecutions generally follow the same five-year window, with certain circumstances extending it. Miss the deadline and the case is gone, however strong the evidence.

Reporting Manipulation as a Whistleblower

Dodd-Frank added a financial incentive to report. Under 15 U.S.C. 78u-6, a person who gives the SEC original information that leads to a successful enforcement action producing more than $1 million in monetary sanctions can receive an award of 10 to 30 percent of the amount collected.¹⁷

Retaliation is separately prohibited. An employer may not fire, demote, suspend, harass, or otherwise discriminate against a whistleblower for reporting to the SEC, helping in an investigation, or making disclosures protected by Sarbanes-Oxley. An employee facing retaliation can sue in federal court within six years of the retaliatory act or three years of discovering the material facts, whichever is earlier, with a ten-year outer limit. Remedies include reinstatement, double back pay with interest, and litigation costs and attorneys’ fees.¹⁷

1
Office of the Law Revision Counsel. 15 USC 78i – Manipulation of Security Prices
2
Legal Information Institute (LII). Securities Exchange Act of 1934
3
Justia U.S. Supreme Court Center. Morrison v National Australia Bank Ltd, 561 US 247
4
United States Department of Justice. High-Frequency Trader Sentenced to Three Years in Prison for Disrupting Futures Market in First Federal Prosecution of Spoofing
5
U.S. Securities and Exchange Commission. Key Points About Regulation SHO
6
eCFR. 17 CFR 242.104 – Stabilizing and Other Activities in Connection With an Offering
7
Office of the Law Revision Counsel. 15 US Code 78i – Manipulation of Security Prices
8
FINRA. Consolidated Audit Trail (CAT)
9
Securities and Exchange Commission. Adjustments to Civil Monetary Penalty Amounts
10
U.S. Securities and Exchange Commission. SEC Obtains Final Judgment Against Canadian Man Charged With Conducting Fraudulent Trading Scheme
11
Federal Bureau of Investigation. Trader Sentenced in Spoofing Case Involving Market Manipulation
12
Office of the Law Revision Counsel. 15 US Code 78o – Registration and Regulation of Brokers and Dealers
13
U.S. Securities and Exchange Commission. SEC Obtains Final Judgments Against Lek Securities and CEO in Layering, Manipulation Case
14
Justia U.S. Supreme Court Center. Dura Pharmaceuticals Inc v Broudo
15
Office of the Law Revision Counsel. 15 US Code 78u-4 – Private Securities Litigation
16
Office of the Law Revision Counsel. 28 US Code 2462 – Time for Commencing Proceedings
17
Office of the Law Revision Counsel. 15 US Code 78u-6 – Securities Whistleblower Incentives and Protection