Dealing Explained: A Complete Guide to Currency Markets and Trading Operations

What Is Insider Dealing?

Insider dealing is the illegal practice of buying or selling securities while in possession of material, non-public information about those securities. It gives the person holding the information an unfair advantage over other market participants who do not have access to it, and in the United Kingdom it is a criminal offence under Part V of the Criminal Justice Act 1993 as well as a civil offence under the Market Abuse Regulation. The conduct undermines the integrity of regulated markets and damages investor confidence, which is why regulators such as the Financial Conduct Authority pursue it aggressively.

The terms "insider dealing" and "insider trading" describe the same underlying misconduct, and the two phrases are used interchangeably across jurisdictions. Understanding the concept, who counts as an insider, and the legal framework that prohibits it is essential for company directors, employees, professional intermediaries and ordinary investors alike.

Definition of Insider Dealing

Insider dealing occurs when an individual who has inside information deals in price-affected securities on the basis of that information. The Cambridge Dictionary, published by Cambridge University Press, defines the activity as the illegal buying and selling of shares by people who have special information because they are involved in the company concerned. The Cambridge Advanced Learner's Dictionary & Thesaurus and the Cambridge Business English Dictionary record similar meanings, and Merriam Webster gives the pronunciation of the parallel American term "insider trading" with the stress on the first syllable of each word.

Under UK law, the offence is committed when an insider does any of three things: deals in price-affected securities, encourages another person to deal, or discloses inside information otherwise than in the proper performance of their employment, office or profession. The "circumstances for the insider dealing offence" therefore extend well beyond a single trade — passing a tip to a friend or relative can be just as unlawful as buying the shares yourself.

Insider Trading vs Insider Dealing

"Insider dealing" is the term used in the United Kingdom, while "insider trading" is the equivalent terminology used in the United States and many other jurisdictions. The distinction is purely linguistic rather than legal: both refer to trading securities on the strength of material non-public information. International translations of the concept appear across the European Union and beyond, but the core idea — misuse of special information for market advantage — is consistent.

The choice of phrase often signals which legal framework applies. In the UK, insider dealing is governed by the Criminal Justice Act 1993 and the Market Abuse Regulation; in the US, insider trading is prosecuted under the Securities Exchange Act of 1934 by the SEC (Securities and Exchange Commission).

Definition of Inside Information

Inside information is specific, non-public information relating to particular securities or an issuer of securities that, if made public, would be likely to have a significant effect on the price of those securities. This is the type of price-sensitive, material information that the law protects, and it must satisfy several requirements to qualify.

• Specific or precise — vague rumour or general market sentiment does not count.
• Non-public — the information must not yet have entered the public domain.
• Price-affecting — a reasonable investor would be likely to use it as part of the basis of an investment decision.
• Related to securities or an issuer — such as an unannounced takeover, profit warning, or regulatory approval.

Material non-public information is the equivalent US criteria, and examples include a pending merger, an upcoming earnings surprise, or a regulatory decision such as an FDA approval of a new drug. Once the information enters the public domain, it ceases to be inside information and may be acted upon freely.

Who Is Considered an Insider?

An insider is anyone who has inside information either through being a director, employee or shareholder of an issuer, or through having access to the information by virtue of their employment, office or profession. The definition deliberately reaches beyond company boardrooms to capture professional intermediaries, advisers and anyone who receives the information from a primary source.

Classification of Insiders

Insiders fall into two broad classes: primary insiders, who obtain inside information directly through their position, and secondary insiders (often called tippees), who receive it from someone else. Both can be guilty of insider dealing, and the law on liability for tippees and information recipients means that even an indirect recipient who knows the information is inside information commits an offence by dealing on it.

• Primary insiders — directors, officers, employees and shareholders of the issuer.
• Professional intermediaries — lawyers, accountants, bankers and brokers who acquire the information through advising the company.
• Tippees — friends, relatives or associates who receive a tip-off and then deal.

The conditions for individual guilt require that the person knew the information was inside information and that it came, directly or indirectly, from an insider source.

Corporate Officer and Director Trading Restrictions

Corporate officers and directors face the tightest trading restrictions because their position gives them constant access to price-sensitive information. Listed companies operate closed periods — typically the weeks before results announcements — during which directors and senior staff are prohibited from dealing in the company's shares. These trading restrictions and closed periods are reinforced by reporting requirements: in the US, insiders must disclose transactions on Form 4 to the SEC, while UK directors must notify the market of their dealings.

Directors also owe a fiduciary duty to the company and its shareholders, an obligation that sits at the heart of much insider trading law. Risk mitigation for directors and officers includes maintaining personal account dealing policies, seeking clearance before trading, and keeping records that demonstrate any trade was unrelated to inside information. Non-executive directors and employees face the same risks, since access rather than seniority is what creates exposure.

Legal Framework Governing Insider Dealing

Insider dealing in the United Kingdom is prohibited by two parallel regimes: a criminal offence under Part V of the Criminal Justice Act 1993 and a civil offence under the Market Abuse Regulation as retained in UK law alongside the Financial Services and Markets Act 2000. The criminal route carries the heaviest penalties but a higher burden of proof, while the civil route allows the Financial Conduct Authority to impose unlimited fines on the balance of probabilities.

Criminal Offence Under Part V of the Criminal Justice Act 1993

Part V of the Criminal Justice Act 1993 makes insider dealing a criminal offence, with section 52 setting out the core prohibition. An individual is guilty if they have inside information as an insider and deal in price-affected securities on a regulated market, encourage another to deal, or improperly disclose the information. Parliamentary debate on the legislation is recorded in Hansard, reproduced under the Open Parliament Licence v3.0.

Criminal Justice Act 1993 Requirements

The Criminal Justice Act 1993 requires several elements to be established before a conviction can follow. Each must be present for the section 52 offence to be made out:

• The information must be inside information — specific, non-public and price-sensitive.
• The defendant must be an insider who knew the information was inside information from an inside source.
• The dealing must involve price-affected securities on a regulated market, or through a professional intermediary.
• The securities must be traded on a Treasury-identified market, including an EEA exchange.

Civil Offence Under the Market Abuse Regulations 2016

Insider dealing is also a civil offence under the Market Abuse Regulation, which took effect in 2016 and is enforced by the Financial Conduct Authority. Article 8 of the regulation (within the MAR framework, often cited as MAR 1) defines insider dealing for civil purposes and captures conduct that the criminal regime might not reach. Because the FCA only needs to prove its case on the balance of probabilities, the civil route is frequently used where a criminal conviction would be harder to secure.

The civil regime distinguishes between several market abuse types — insider dealing, unlawful disclosure of inside information, and market manipulation. Penalties include unlimited financial penalties and fines, public censure, and restrictions on holding regulated positions.

Criminal Liability and Enforcement Mechanisms

Criminal liability for insider dealing rests with the individual who dealt, encouraged dealing, or disclosed information improperly, and enforcement in the UK is led by the Financial Conduct Authority. The FCA uses sophisticated detection and monitoring, working with stock exchanges that flag unusual trading patterns ahead of announcements. FCA enforcement and investigation processes can involve dawn raids, compelled interviews and forensic analysis of communications.

The difference between the criminal and civil offences is one of forum, burden and penalty. The criminal offence is tried before a jury and can lead to imprisonment; the civil offence is dealt with administratively by the FCA and results in fines and prohibitions. FCA enforcement trends show a continued willingness to pursue both routes, and the regulator's future outlook emphasises data-driven surveillance of trading activity.

Criminal Penalties and Custodial Sentences

The criminal penalty for insider dealing under the Criminal Justice Act 1993 is a maximum of seven years' imprisonment, an unlimited fine, or both. Custodial sentences are reserved for the most serious cases, while lesser conduct may attract confiscation orders and disqualification from acting as a company director.

One landmark UK case involved Martyn Dodgson and Andrew Hutchinson, convicted following Operation Tabernula, the FCA's largest insider dealing investigation; Dodgson received a four-and-a-half-year sentence. Earlier prosecutions arising from leaks at firms such as Logica and Towry, including individuals such as Mark Taylor and Pardip Saini, demonstrated that intermediaries and IT contractors are just as exposed as senior bankers.

Defences Against Insider Dealing Charges

The law provides specific statutory defences to both the criminal and civil forms of insider dealing, and these defences differ between the two regimes. Establishing a defence does not deny that the person held inside information, but shows that their conduct fell within a recognised exception.

Defences Against Criminal Insider Dealing Charges

The Criminal Justice Act 1993 sets out several defences against criminal insider dealing charges, which a defendant must raise on the evidence. The principal statutory defences include:

• The defendant did not expect the dealing to result in a profit attributable to the price-sensitive nature of the information.
• The defendant believed on reasonable grounds that the information had been disclosed widely enough that no participant would be prejudiced.
• The defendant would have dealt in the same way regardless of holding the information.
• Specific defences relating to market makers acting in good faith and to price stabilisation activity.

Defences Against Civil Market Abuse Charges

Defences against civil market abuse charges focus on legitimate behaviour recognised by the Market Abuse Regulation. A person may show that they were carrying out their own previously formed trading intention, executing a client order without using the inside information, or relying on information that was in fact already public. The FCA also recognises accepted market practices and safe harbours, such as authorised buy-back programmes and stabilisation, as conduct that does not amount to market abuse.

Related Forms of Market Abuse

Insider dealing sits within a wider family of market abuse and financial crime offences that distort fair pricing in the markets. Market manipulation and dissemination of false information are the other principal categories, and they often overlap with related fraud and corruption concepts.

Cornering and Transactional Manipulation

Cornering and transactional manipulation involve trading techniques designed to create a false or misleading impression of supply, demand or price. Specific market manipulation tactics are well documented and frequently prosecuted alongside insider dealing:

• Cornering — acquiring enough of an asset to control its price and force other participants to trade on unfavourable terms.
• Ramping — placing orders to push a price artificially upward before selling.
• Churning — excessive trading to create the illusion of activity, often through device manipulation or wash trades.
• Bear raiding — coordinated selling and the spread of negative information to drive a price down.

Quid pro quo arrangements, dealing for an improper purpose, and device manipulation and dissemination fraud all fall within the regulator's definition of market abuse, alongside the misuse of information that characterises insider dealing.

Academic Debate on the Legality of Insider Trading

There is a long-running academic debate over whether insider trading should be illegal at all, with economists divided on its effects. The most prominent dissenting voice was Henry Manne, whose work argued that insider trading could improve market efficiency by moving prices toward their true value more quickly and could serve as a legitimate form of executive compensation.

Economic arguments against prohibition contend that insider trading harms no identifiable victim and accelerates accurate pricing. Arguments for prohibition — the position adopted by virtually every regulator, including the FCA and SEC — hold that it erodes investor confidence, deters market participation, and breaches the fiduciary duty owed to shareholders. Investor protection and the prevention of market damage remain the dominant rationale, and the offence's roots are often traced to reforms following the stock market crash of 1929.

International Insider Trading Cases and Jurisdictions

Insider trading is prohibited across the world's major financial centres, though enforcement variations and penalties differ significantly by country. Several high-profile cases illustrate how regulators in different jurisdictions have applied their laws.

• Martha Stewart (United States) — convicted in connection with her sale of ImClone shares after a tip about a pending FDA decision; ImClone founder Samuel Waskal was also prosecuted by the SEC.
• Raj Rajaratnam (United States) — the Galleon Group founder received an eleven-year sentence after the SEC and prosecutors traced tips from sources at firms including Intel Corp, IBM, McKinsey & Co and Morgan Stanley.
• Joseph Nacchio (United States) — the former Qwest Communications chief executive was convicted of insider trading and sentenced to prison.
• Yoshiaki Murakami (Japan) — the fund manager was found guilty over trading in Nippon Broadcasting shares linked to Livedoor.
• Reliance Industries (India) — SEBI, the Securities and Exchange Board of India, imposed penalties in a case concerning trading in Reliance Industries securities.

SEC penalties in the US can include heavy fines and imprisonment terms of up to twenty years for securities fraud, while SEBI penalties in India and enforcement in the European Union and EEA exchanges reflect each jurisdiction's own statutory regime. The consistent thread is that dealing on material non-public information is treated as a serious securities violation everywhere it is regulated.

Understanding Dealing and Financial Markets

Dealing is the operational management of financial resources, and understanding it provides the context in which insider dealing offences arise. The legitimate activity of dealing in securities and currencies is fundamental to modern markets; insider dealing is the abuse of that activity through the misuse of privileged information.

Dealing as Operational Management of Financial Resources

Dealing is the activity of operative management of financial resources. Due to its specificity, dealing is most effective when handling highly liquid commodities or financial assets, where the cost of transactions is less than or commensurate with changes in the market value of the contract over the time required to conclude it. The intensive development of dealing operations is connected with advances in communications and computer technology.

Modern means of communication allow prices to be received with a delay of only a few seconds, while computer technology enables an optimal decision to be made and a deal concluded in a very short time. This speed is precisely why timely, accurate information is so valuable in markets — and why misusing non-public information is treated so seriously.

The Currency Market and FOREX

The foreign exchange market is the set of conversion, deposit and credit operations in foreign currencies carried out between counterparties at the market rate or interest rate. Conversion operations are the exchange of monetary amounts expressed in the currencies of different countries at an agreed rate with settlement on a certain date, and the market for these operations is universally designated FX or FOREX (FOReign EXchange).

FOREX is not a market in the traditional sense: it has no single centre and no specific trading place. Trading takes place by phone and through computer terminals across hundreds of banks worldwide, uniting the Asian, European, American and Australian regional markets. These over-the-counter markets operate around the clock, with London as the largest trading centre, followed by New York, Tokyo and Singapore. Because the FOREX market has no external regulator and prices are set purely by supply and demand, the integrity concerns that drive insider dealing law apply differently than they do on the regulated equity markets where listed securities trade.

Legal Services and Support

Specialist legal advice is essential for anyone facing an insider dealing investigation, given the complexity of the criminal and civil regimes and the severity of the penalties involved. Experienced financial crime barristers can advise at every stage, from regulatory interview to trial.

Barristers and Legal Services Offered

St Pauls Chambers, based in Leeds, is a set of barristers offering expertise across business and financial crime, including insider dealing, market abuse and related fraud. Its areas of expertise cover defending individuals and companies under investigation by the Financial Conduct Authority and prosecuting and defending offences under the Criminal Justice Act 1993 and the Market Abuse Regulation. Instructing counsel early helps directors, officers and intermediaries understand their position and protect their interests.

Contact and Support

Anyone who is under investigation, has received a request for interview, or is concerned about their exposure to insider dealing or market abuse rules should seek qualified legal advice promptly. Early contact with specialist financial crime barristers allows the available defences — whether against criminal charges under the Criminal Justice Act 1993 or civil action under the Market Abuse Regulation — to be assessed and preserved before key decisions are made.