What Is Shadow Trading? Misappropriation, Panuwat, and Penalties

Shadow trading is a form of insider trading where someone uses confidential information about their own employer to trade the stock of a different but economically connected company, usually a competitor or industry peer whose price will move when the employer’s news becomes public. Instead of buying shares in the company where they work, the trader targets a company that the market will react to once the confidential news hits. In April 2024, a federal jury validated this theory for the first time, confirming that the practice violates federal securities law.¹

How It Differs From Ordinary Insider Trading

Traditional insider trading has an obvious link: an executive learns their company will report strong earnings, buys their own company’s stock, and profits when the news goes public. The insider, the information, and the traded stock all point to the same company.

Shadow trading breaks that direct link. The trader uses inside knowledge about Company A to buy stock in Company B, betting that the news will ripple across the industry. That indirectness is why the practice went unaddressed for so long. Many people in finance assumed they were safe as long as they avoided their own employer’s ticker. That assumption is no longer defensible.

Why It Counts as Fraud: The Misappropriation Theory

Shadow trading prosecutions rely on the misappropriation theory of insider trading. The idea is straightforward: when your employer entrusts you with confidential information, you owe a duty not to convert it into personal profit. The violation is not about which stock you trade. It is about taking information that belongs to someone else and using it to make money.

The Supreme Court adopted this framework in United States v. O’Hagan, holding that trading on misappropriated confidential information is a form of fraud against the source of the information. Under this theory, it does not matter whether you buy your own company’s stock, a competitor’s stock, or an industry ETF. What matters is whether you breached a duty of trust to get the information you traded on.

Who Owes That Duty

The duty is not limited to executives and directors. SEC Rule 10b5-2 identifies three situations where a duty of trust or confidence exists: when a person agrees to keep information confidential, when two people have an established pattern of sharing confidences, and when the information comes from a spouse, parent, child, or sibling.² Independent contractors, consultants, accountants, lawyers, and family members who receive a corporate tip can all face liability if they trade on it.

For a rank-and-file employee, the duty usually comes from a signed confidentiality agreement or the company’s insider trading policy. That signature is the hook. Use confidential information from work to buy a competitor’s stock and you have breached the duty, even though the competitor has nothing to do with you.

The Case That Made Shadow Trading Real: SEC v. Panuwat

Matthew Panuwat ran business development at Medivation, a mid-sized cancer drug company. In August 2016, he learned through internal emails that Pfizer was about to acquire Medivation at a significant premium. Within minutes of reading the news, he bought short-term, out-of-the-money call options in Incyte Corporation, another mid-cap oncology-focused pharmaceutical company with no involvement in the deal.³

His bet was that the acquisition of Medivation would make Incyte look like the next likely takeover target and push its stock up. The market moved that way, and his options gained value.

The SEC charged Panuwat with violating Section 10(b) of the Securities Exchange Act and Rule 10b-5. The agency argued that Medivation’s insider trading policy expressly forbade Panuwat from using confidential information to trade in the securities of any other publicly traded company, and that trading Incyte options on the Pfizer news breached that duty.³

Panuwat’s defense argued that his confidentiality agreement covered only information belonging to Medivation, that the news was not material to Incyte because the two companies were different businesses and not direct competitors, and that the SEC had never before brought a case where the inside information involved a third party’s stock. After an eight-day trial in the Northern District of California, the jury found him liable. The court ordered him to pay a civil penalty of $321,197.40.⁴ Panuwat appealed to the Ninth Circuit in November 2024, so the theory has not yet been tested at the appellate level.

What the SEC Has to Prove

A shadow trading case has to satisfy every element of a standard Rule 10b-5 claim, plus one factor unique to this theory: the economic link between the two companies.

The confidential information must be material, meaning a reasonable investor would consider it important. A blockbuster merger qualifies easily; a routine internal matter probably does not.
The information must be non-public. Once it appears in a press release or SEC filing, it is fair game.
The trader must have owed a duty of trust or confidence to the source. Employment contracts, insider trading policies, and non-disclosure agreements typically establish that duty.²
The trader must have acted deceptively, using the information for personal profit without disclosing that use to the source.
The trader must have acted with scienter, meaning intentionally or with reckless disregard.
The information about Company A must be material to Company B’s stock price. The test is whether a reasonable investor would view the news about Company A as significantly changing the outlook for Company B.

The economic nexus is where these cases get complicated. There are no fixed numerical thresholds for how closely two companies need to correlate. Courts are likely to rely on expert testimony examining historical stock price correlation, overlap in business lines, and whether analysts routinely compare the two companies. In Panuwat the link was clean: both were mid-cap oncology-focused pharmaceutical firms, and the acquisition of one made the other a plausible takeover target. Weaker connections will be harder for the SEC to establish.

Penalties

Shadow trading carries the same penalties as any other insider trading violation, because it is prosecuted under the same statutes.

On the civil side, the SEC can seek disgorgement, forcing the trader to hand back every dollar of profit, and a separate civil penalty of up to three times the profit gained or the loss avoided.⁵ A trader who made $100,000 could be ordered to return that $100,000 and pay an additional penalty of up to $300,000. Courts can also permanently bar the individual from serving as an officer or director of any public company, and most judgments include an injunction against future violations.

Civil liability is not the ceiling. The Department of Justice can bring a separate criminal prosecution for the same conduct. A person convicted of willfully violating the Exchange Act faces up to 20 years in prison and a fine of up to $5 million; corporations face fines of up to $25 million.⁶

The SEC generally has five years from the date of the violation to bring a civil enforcement action.⁷

ETFs Are Not a Workaround

Anyone thinking a sector ETF provides cover should reconsider. Researchers have documented patterns of insiders using industry-focused ETFs to profit from confidential information, since those funds often hold heavy concentrations of the relevant industry peers. If trading a single competitor’s stock on inside information is fraud, trading a basket of competitors through an ETF is the same fraud with a veneer of diversification. The SEC has not yet brought an ETF-specific shadow trading case, but the Panuwat logic applies directly.

What Your Employer’s Policy Probably Says Now

Public companies are required to disclose their insider trading policies as exhibits to their annual 10-K filings under Item 408(b) of Regulation S-K.⁸ Many companies have updated those policies to address shadow trading directly. Microsoft’s policy prohibits trading in any publicly traded company when the employee holds material nonpublic information gained through their role, specifically calling out “economically-linked” companies like competitors. Oracle bars employees from trading in any other company’s securities while they hold inside information about Oracle that could affect that other company’s stock.

If your employer’s policy already covers trading in “other companies” based on confidential information, you are bound by that language whether or not you have heard the term shadow trading. The policy Panuwat signed at Medivation contained exactly this kind of broad language, and it was central to the SEC’s case.

Where the Law Stands

The Ninth Circuit appeal is the piece to watch. If the court upholds the verdict, shadow trading enforcement will have firm legal footing and the SEC will almost certainly bring more cases. If the court reverses, the theory returns to being untested and future enforcement gets harder.

Either way, the practical takeaway does not change. If you have access to sensitive information at work and you trade any stock in your industry based on that information before it goes public, you are exposed to insider trading liability. Avoiding your own company’s ticker symbol is no longer enough.

1
U.S. Securities and Exchange Commission. Matthew Panuwat
2
eCFR. 17 CFR 240.10b5-2 – Duties of Trust or Confidence in Misappropriation Insider Trading Cases
3
U.S. Securities and Exchange Commission. Securities and Exchange Commission v. Matthew Panuwat
4
U.S. Securities and Exchange Commission. Final Judgment – SEC v. Matthew Panuwat
5
Office of the Law Revision Counsel. 15 USC 78u-1 – Civil Penalties for Insider Trading
6
Office of the Law Revision Counsel. 15 USC 78ff – Penalties
7
Office of the Law Revision Counsel. 28 USC 2462 – Time for Commencing Proceedings
8
eCFR. 17 CFR 229.408 (Item 408) – Insider Trading Arrangements and Policies