Home FCA Handbook MAR MAR 5 MAR 5.6 Reporting requirements
You are viewing MAR 5.6 Reporting requirements as of . MAR 5.6 Reporting requirements was last updated on 23/10/2025.

MAR 5.6 Reporting requirements

23/10/2025R

A firm must:

  1. (1)

     report to the FCA any:

    1. (a)

       significant breaches of the firm's rules;

    2. (b)

       disorderly trading conditions;

    3. (c)

       conduct that may involve market abuse; and

    4. (d)

       system disruptions in relation to a financial instrument;

  2. (2)

     supply the information required under this rule without delay to the FCA and any other authority competent for the investigation and prosecution of market abuse;

  3. (3)

     provide full assistance to the FCA, and any other authority competent for the investigation and prosecution of market abuse, in its investigation and prosecution of market abuse occurring on or through the firm's systems;

  4. (4)

     when assessing whether the requirement to inform the FCA immediately of significant infringements of the rules of its trading venue, or disorderly trading conditions or system disruptions in relation to a financial instrument applies, consider the signals listed in MAR 1 Annex 3R 1; and

  5. (5)

     when assessing whether the requirement to immediately inform the FCA of conduct that may indicate behaviour that is prohibited under the Market Abuse Regulation applies, consider the signals listed in MAR 1 Annex 3R 2.

23/10/2025R

  1. (1)

     A firm operating one or several trading venues where a financial instrument and/or related financial instrument are traded must apply a proportionate approach and exercise judgement on the signals triggered, including any relevant signals not specifically included in MAR 1 Annex 3R 2, before informing the FCA, taking into account the following:

    1. (a)

       the deviations from the usual trading pattern of the financial instruments admitted to trading or traded on its trading venue; and

    2. (b)

       the information available or accessible to the firm, whether that be internally as part of the operations of the trading venue or publicly available.

  2. (2)(a)

     A firm operating one or several trading venues must also take into account front running behaviours, which consist in a market member or participant trading, for its own account, ahead of its client.

    1. (b)

       For the purposes of (a), a firm must use the order book data required to be recorded by the trading venue pursuant to Article 25 of MiFIR (Obligation to maintain records) – in particular, those relating to the way the member or participant conducts its trading activity.

  3. [Note: article 31 (2) of MiFID, MiFID RTS 18 and MiFID ITS 2]
01/09/2017R

A firm operating an MTF must give the FCA a summary of:

  1. (1)

    any proposal to introduce, amend or renew a scheme for rebating or waiving fees or charges levied on its members or participants (or any group or class of them), at the same time as the proposal is communicated to those members or participants; and

  2. (2)

    any such change, no later than the date when it is published or notified to the members or participants.

01/09/2017R

The summary referred to in MAR 5.6.2R(1) must be given in the form specified in MAR 5 Annex 2R.

23/10/2025G

(1) For the purposes of the signals referred to in MAR 1 Annex 3R, references to ‘order to trade’ should encompass all types of orders, including initial orders, modifications, updates and cancellations of orders, irrespective of whether or not they have been executed and irrespective of the means used to access the trading venue.

(2) The list of signals of insider dealing and market manipulation is neither exhaustive nor determinative of market abuse or attempts of market abuse, as each of the signals may not necessarily constitute market abuse or attempts of market abuse per se. Transactions or orders to trade meeting one or more signals may be conducted for legitimate reason or in compliance with the rules of the trading venue.