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In forceInvestment firms and trading venues (national)Last checked 13 November 2026

Monthly summary of client assets held (MKT (ČNB) 51-12 to 55-12)

A regulatory return listed by the Czech National Bank (CNB), Czech Republic.

Securities, other investment instruments and client funds held by the firm on behalf of clients, and the changes to the numbers of investment instruments and funds held during the month. Source

The facts

Who files
Investment firms that are banks, branches of a foreign bank, investment firms that are not banks, and portfolio managers, if entitled to accept client funds or investment instruments (Decree No. 424/2017 Coll., Article 5(1)). Source
How often
Monthly, as at the last day of the calendar month. Source
Deadline
Within 20 days of the end of the calendar month. Source
Format
Other. Submitted as an electronic data message in the structure of data files through the internet application or user interface of the CNB's collection system (SDAT). Source
How it is filed
Filing route recorded for the CNB: SDAT (Sběr dat ČNB). See how firms file with the CNB.
Status
In force
Group
Investment firms and trading venues (national)

Templates (5)

The tables and forms inside the return. Plain name first, the CNB's code in brackets.

  • Summary of securities held in client assets (MKT (ČNB) 51-12)
  • Summary of other investment instruments held in client assets (MKT (ČNB) 52-12)
  • Summary of funds held in client assets (MKT (ČNB) 53-12)
  • Summary of changes to the number of investment instruments held in client assets (MKT (ČNB) 54-12)
  • Summary of changes in funds held in client assets (MKT (ČNB) 55-12)

Where the list was read: Source

Validation rules

No published validation rules were found for this return. Source

Public data

No published data from this return was found. No data from this return published by the Czech National Bank was found on the pages checked. Source

Official documents (1)

The CNB's own files, with the size and SHA-256 fingerprint of each as downloaded on 13 November 2026, so anyone can tell whether a copy is the same version.

Sources

Every page and document this return's facts were read from.

Knowing exactly what is collected, in what format and under which rules is the first step to real-time supervision. Line4 builds SupTech software for financial regulators that runs checks like these as each return arrives.

Line4's text and records here are free to reuse under CC BY 4.0. Please credit: “Source: Line4 regulatory submissions library (CC BY 4.0), https://www.line4.ai”. The regulators' documents, forms, taxonomies, rules and data belong to them: see CNB's reuse terms. This describes what regulators publish. It is not legal or regulatory advice: always rely on the regulator's own text.

Source: the CNB (Czech National Bank, https://www.cnb.cz). Documents copied here are unchanged. The plain-English summaries are Line4's own; the CNB does not endorse this library.

Last checked 13 November 2026.