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Market abuse meaning

/ˈmɑːkɪt//əˈbjuːz/
What does Market abuse mean?
Market abuse describes conduct that undermines market integrity by using inside information or manipulating prices, orders or disclosures. In the UK, the civil market abuse regime is in the retained Market Abuse Regulation (UK MAR: Regulation (EU) 596/2014 as onshored), supported by the Financial Services and Markets Act 2000 and FCA rules and guidance. In Ireland, EU MAR applies and is enforced by the Central Bank of Ireland. Usage is consistent across England & Wales, Scotland and Northern Ireland (UK MAR) and Ireland (EU MAR). The regime covers behaviour relating to financial instruments admitted to trading, or for which admission is sought, on a regulated market, MTF or OTF, emission allowances and related instruments. It also extends to certain spot commodity contracts and benchmarks where conduct affects MAR instruments or their prices. Core behaviours are insider dealing, unlawful disclosure of inside information and market manipulation (for example spoofing or disseminating false or misleading information). Practically, issuers must disclose inside information and keep insider lists; PDMRs face dealing controls; firms must detect and report suspicious orders and transactions (STORs). Breach can lead to FCA or Central Bank civil sanctions (including fines and prohibitions) and, under separate statutes, criminal liability.
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View the related Checklists about Market abuse

CHECKLISTS
Private competition claims: pre-action strategy and checklist for standalone and follow-on cases, covering liability, jurisdiction, limitation, evidence and quantification, remedies, collective proceedings, costs and funding

Is there an actionable claim? Note: private competition claims are predominantly governed by national law, and procedural as well as substantive rules differ markedly across the EU; accordingly, when planning competition litigation, assessments will need to be made for each individual jurisdiction. Possible causes of action Assess whether UK competition law has been breached (or EU competition law where the period predates the end of the Brexit transition period). Determine if the loss arises from an agreement or concerted practice between undertakings, particularly between competitors (see further, The prohibition on restrictive agreements). Evaluate whether an undertaking that is arguably dominant—typically indicated by a substantial share of a relevant market—caused the loss through abusive conduct contrary to Chapter II of the Competition Act 1998 (and/or Article 102 TFEU if before the end of the Brexit transition period) (see further, The prohibition on abuse of dominance). Consider whether other national or foreign competition laws have...

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CHECKLISTS
UK Market Abuse Regulation (MAR): Practical Guide and Flowchart for Assessing Insider Dealing, Unlawful Disclosure and Instruments in Scope

Assimilated Regulation (EU) 596/2014 (UK Market Abuse Regulation) has effect in the UK from IP completion day (31 December 2020)...

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CHECKLISTS
Market Definition for Competition Cases: UK and EU Practical Checklist, Evidence and Special Cases (SSNIP, Critical Loss, Aftermarkets, Chains of Substitution, Dynamic Markets)

Market definition is fundamental to the application of competition law. This Checklist helps to determine the relevant market for competition-law purposes and the kinds of evidence that can be used when delineating a relevant market (see further, Market definition and analysis in EU and UK competition law)... Framework for assessment Keep in mind the purpose of defining the market in competition cases. Market definition is not a goal in itself; it is a tool for identifying the strongest and most immediate competitive pressures acting on a firm or firms for the evaluation of market power. Key points to bear in mind when defining and analysing markets are as follows: Consider the context in which the market-definition exercise is undertaken (whether it concerns the assessment of restrictive agreements, abuse of dominance, or mergers)...

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FLOWCHARTS
Flowchart: assessing inside information under Article 7 of the EU and UK Market Abuse Regulation

The following chart provides a concise outline of the principal information and the questions to weigh when determining whether something amounts to inside information for the purposes of Article 7 of Regulation (EU) 596/2014 (the EU Market Abuse Regulation) and Assimilated Regulation (EU) 596/2014 (the UK Market Abuse Regulation). For fuller detail, consult Practice Note: Market Abuse Regulation (MAR)—essentials—Definition of inside information...

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NEWS
EU competition law daily briefing: statement of objections to Meta over WhatsApp AI assistant access ban; possible interim measures; updated reform timeline; merger clearances; State aid decisions; key upcoming dates

Antitrust Commission issues SO to Meta over WhatsApp AI access limits; flags possible interim measures The Commission has delivered a statement of objections to Meta, outlining its preliminary assessment that Meta blocked third-party artificial intelligence (AI) assistants from accessing and engaging with users on WhatsApp, infringing Article 102 TFEU (AT.41034). The Commission considers that Meta’s behaviour risks preventing competitors from entering or growing in the rapidly expanding market for general-purpose AI assistants and has therefore indicated its intention to impose interim measures (subject to Meta’s rights of defence) to avoid serious and irreparable harm to competition. Background On 15 October 2025, Meta announced changes to its WhatsApp Business Solution Terms, effectively prohibiting third-party general-purpose AI assistants from the platform. Consequently, from 15 January 2026, Meta’s own assistant, Meta AI, has been the only AI assistant available on WhatsApp. On 4 December 2025, the Commission opened formal proceedings to examine whether this policy shift amounts to an abuse of dominance. The investigation covers the EEA, excluding Italy, where...

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NEWS
UK and EU competition law weekly briefing: CAT Deckers/HOKA ruling, Vodafone/Three remedies, Meta CPO appeal, Teva abuse fine, Apple DMA compliance—7 November 2024

In this issue: UK antitrust UK mergers UK private actions UK market studies UK subsidy control EU antitrust EU State aid EU digital markets LexTalk®Competition: a Lexis®Nexis community Daily and weekly news alerts New and updated content Caselex UK antitrust CAT holds Deckers breached the Chapter I prohibition concerning restrictions on the sale HOKA running shoe brand The CAT handed down its judgment in Up & Running (UK) Limited v Deckers UK Ltd, a damages action brought by Up and Running (UK) Limited (Up & Running) against Deckers UK Limited (Deckers), alleging an infringement of the Chapter I prohibition under the Competition Act 1998 in relation to the sale of the HOKA running shoe brand. The CAT found that Deckers infringed the Chapter I prohibition by restricting the sale of those running shoes. Background Up & Running operates a retail business focused on specialist running footwear and accessories. Deckers...

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NEWS
UK competition law round-up: CAT judgment in Infederation (Foundem) v Google on time-barred amendments; plus private actions tracker and calendar

Private actions The CAT issued its judgment in Infederation Ltd v Google Inc and Others, on an application by Google LLC, Google Ireland Limited and Google UK Limited (together, Google) seeking to strike out sections of Infederation Limited’s (Foundem) particulars of claim relating to Foundem’s damages case against Google, alleging abuse of a dominant position in the market for online search. The CAT rejected the application, concluding that the proposed amendments amounted to a fresh claim that did not arise from the same, or substantially the same, facts as the original claim and was therefore time‑barred—see further, judgment NOTE—For all live private actions in the UK that have been made public, see further, UK private actions—ongoing cases tracker Upcoming dates—For dates of upcoming UK competition developments, see further, UK Competition calendar ...

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View the related Practice Notes about Market abuse

PRACTICE NOTES
UK DTR 2: issuer obligations on disclosure, delay, control and selective disclosure of inside information—FCA/ESMA guidance, case law, COVID‑19 context and enforcement (post‑Brexit UK MAR)

Resource Note This Resource Note signposts key commentary, analysis and materials to aid interpretation and offer practical direction on using Chapter 2 of the Disclosure Guidance and Transparency Rules (DTR 2). Where relevant, it draws on: the Financial Conduct Authority (FCA) Handbook FCA Knowledge Base—Procedural and Technical notes (formal guidance binding on the FCA) FCA consultation and discussion papers, policy and feedback statements, and warnings Primary Market Bulletins and other FCA publications legacy UKLA technical and procedural notes and the UKLA’s newsletter List!, where still pertinent assimilated EU legislation EU Directives and EU Regulations, where helpful to construing a provision Lexis+® UK analysis and resources Setting the scene What it covers: DTR 2 prescribes the framework for issuers to disclose and manage inside information, supporting timely and even-handed release of market-sensitive information. It also identifies specific situations permitting a delay to public disclosure of inside information, together with the safeguards required to keep such information...

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PRACTICE NOTES
UK FCA DTR 1–1C: application, post‑Brexit and 2024 listing reforms, MAR interplay, audit committees, misleading disclosures and related party rules

This Resource Note spotlights commentary, analysis and materials to aid interpretation and give practical guidance on applying Chapters 1, 1A, 1B and 1C of the Disclosure Guidance and Transparency Rules: DTR 1, DTR 1A, DTR 1B and DTR 1C respectively. Materials referenced here include, where pertinent: the Financial Conduct Authority (FCA) Handbook FCA Knowledge Base guidance—Procedural notes and Technical notes (constituting formal guidance and binding on the FCA) FCA consultation papers, discussion papers, policy statements, feedback statements and warnings Primary Market Bulletins and other FCA publications former UKLA technical and procedural notes and the UKLA newsletter List!, where still relevant to interpreting or applying a provision assimilated EU legislation EU Directives and EU Regulations, where relevant to interpreting a provision Lexis+ UK analysis and resources Setting the scene What it covers: DTR 1 sets out the Disclosure guidance, explaining its scope and purpose; DTR 1A sets out the transparency rules with their scope and purpose;...

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PRACTICE NOTES
Share-based remuneration for UK non-executive directors: independence, employees’ share scheme status, Listing/AIM, UK MAR, pre-emption, financial assistance, FSMA, disclosure and practical structuring options

Meaning of ‘non-executive director’ The broad definition of ‘director’ is not closed. Under the Companies Act 2006 (CA 2006), a director is any person who occupies the office of director, whatever title they hold. Accordingly, this covers both executive and non-executive directors (NEDs). Executive directors are typically authorised, either by the company’s constitution or by authority delegated from the board, to manage the company’s day-to-day affairs, and they usually have a full-time service contract. NEDs generally: have no executive powers play a pivotal role in the company’s corporate governance are not employees of the company There are a number of challenges around granting shares to NEDs. This Practice Note considers the issues to assess when offering shares or share-based remuneration to NEDs, including: the potential impact on the NED’s independence the share dealing provisions of Assimilated Regulation (EU) 596/2014 for the UK, and the Market Abuse Regulation (Regulation (EU) 596/2014) previously and for the EU ...

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PRECEDENTS
UK environmental reporting for large unquoted companies: CA 2006 TCFD-aligned and SECR obligations, strategic report and GHG disclosures, with QCA/Wates considerations and practical board guidance

Memorandum prepared by [ Name of Firm ] for the directors of [ insert company name ] (the Company) providing guidance on annual environmental reporting obligations and disclosures 1 Scope This memorandum sets out the principal environmental disclosures the Company must present in its annual report and accounts. It reviews and explains the Companies Act 2006 (CA 2006) obligation to provide climate-related disclosures in line with the recommendations of the Task Force on Climate-related Financial Disclosures (TCFD), the need to state greenhouse gas (GHG) emissions, energy consumption and actions to improve energy efficiency under the Streamlined Energy and Carbon Reporting (SECR) regime, and other environmental legislation [ , as well as relevant principles and provisions within the QCA Corporate Governance Code (QCA Code) and the Wates Corporate Governance Principles for Large Private Companies (Wates Principles) ]. It also offers practical guidance for companies when assembling their environmental disclosures for reporting purposes. [ As an AIM company, the Company is subject to continuing disclosure obligations under the AIM...

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PRECEDENTS
UK climate and environmental reporting for quoted companies: TCFD, Listing Rules, Companies Act 2006, SECR, GHG, strategic report and UK Corporate Governance Code

Memorandum prepared by [ Name of Firm ] For the directors of [ insert company name ] (the Company) advising on annual environmental reporting 1 Scope This memorandum outlines the principal environmental disclosures the Company must include within its annual report and accounts. It addresses the UK Listing Rule and Companies Act 2006 ( CA 2006 ) obligations to present climate-related information consistent with the recommendations of the Task Force on Climate-related Financial Disclosures ( TCFD ). It also covers the duty to disclose greenhouse gas ( GHG ) emissions, energy consumption and measures to improve energy efficiency under the Streamlined Energy and Carbon Reporting ( SECR ) framework, together with other environmental legislation [ , and relevant principles and provisions from the UK Corporate Governance Code ( UKCG Code ) ] . In addition, it provides practical guidance to assist companies in compiling robust environmental disclosures. As a listed entity, the Company is further subject to continuing disclosure duties under the UK Listing Rules, the Disclosure Guidance...

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PRECEDENTS
UK competition law compliance: code, prohibited agreements and abuse of dominance, competitor interactions, and CMA dawn raid guidance

We are strong but fair competitors We pursue competition with energy while upholding integrity and complying with all relevant competition laws. These laws exist to protect businesses and consumers from anti-competitive behaviour, and to preserve effective competition. Competition laws forbid 'restraints of trade', covering certain kinds of agreements or conduct involving rivals, customers or suppliers, and can also apply to a single undertaking with a dominant market position...

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