Periodic and non-periodic transmission of information by UCIs

This page applies to the following UCIs:

• undertakings for collective investment subject to Part I of the Law of 17 December 2010 (“UCITS”);
• undertakings for collective investment subject to Part II of the Law of 17 December 2010 (“Part II UCIs”);
• specialised investment funds governed by the Law of 13 February 2007 (“SIFs”);
• investment companies in risk capital governed by the Law of 15 June 2004 (“SICARs”).

This page sets out the various periodic and non-periodic information which must be sent to the CSSF by UCIs. Some points concern all types of UCIs while others only concern certain types of UCIs (see detailed sub-headings below).

A table containing identifiers of UCIs, compartments and share classes is available in the Guidance section below.

Legal reporting encompasses all the periodic and ad hoc information to be transmitted to the CSSF for prudential supervisory purposes by the entities under its supervision, observing the file transport and data protection instructions.

The supervised entities are required to transmit periodic data relating to their activities to the CSSF on a monthly, quarterly, half-yearly or annual basis, depending on the circumstances.

The instructions of the CSSF concern only the prudential reporting (tables O, U, K, SIAG, FIAAG and MMF), for which the CSSF is responsible. Instructions relating to the statistical reporting (tables S), for which the BCL is responsible, are available on the BCL website.

It should be noted that tables O, U and S are shared between the CSSF and the BCL.

The File transport and data protection page provides additional technical details regarding the transmission channels for reporting.

Please refer to the “Investment fund managers” pages for instructions relating to information that AIFMs must provide for the alternative investment funds (AIFs) they manage.

In accordance with Circular CSSF 15/627 (as amended by Circular CSSF 25/871), UCIs must report financial information to the CSSF on a monthly basis.

The reporting obligation starts from the authorisation date of the fund or compartment even if the fund or compartment has not been launched (no subscription has been made).

The information to be submitted is detailed in the document “Guidelines on the U1.1 reporting” available in the Guidance section below and should be sent via the transmission channels in XML format.

In accordance with Circulars IML 97/136 and CSSF 07/310, as amended by Circular CSSF 08/348, UCITS, UCIs Part II and SIFs must report financial information to the CSSF on an annual basis.

The financial information concerns the audited accounts at financial year-end, which does not necessarily correspond to the calendar year-end.

The information to be submitted is detailed in the Circulars and should be sent via the transmission channels in EDIFACT format.

In accordance with Circular CSSF 08/376, SICARs must report financial information to the CSSF on a half-yearly basis as at 30 June and 31 December of each year.

If the financial year-end does not coincide with the end of the first six calendar months or with the end of the calendar year, the audited accounts must be reported on either 30 June or 31 December, whichever date is the closest. Financial information based on the accounting records (unaudited) must be reported for the half-yearly report.

The information to be submitted is detailed in the Circular and should be sent via the transmission channels in Excel format.

In accordance with Article 147 of the Law of 17 December 2010 relating to undertakings for collective investment, the CSSF requires financial information from UCITS on a half-yearly basis, including their exposures to financial derivative instruments and liquidity and credit risks.

The funds are informed by a CSSF circular letter if, based on the value of total net assets and use of leverage parameters, they are subject to the light or full version of the UCITS risk reporting.

The information to be submitted is detailed in the document “Guidelines on the UCITS risk reporting” available in the Guidance section below and should be sent to the email address URR_reporting@cssf.lu in Excel format.

Please enter your data in the relevant fields of the template. The format of the template is fixed and must not be altered. Do not add or delete columns or fields, do not change the format in any other way.

In accordance with Circular CSSF 18/698, SIAGs subject to Article 27 of the Law of 17 December 2010 relating to undertakings for collective investment and FIAAGs within the meaning of point (b) of Article 4(1) of the Law of 12 July 2013 on alternative investment fund managers must report specific information to the CSSF on a quarterly basis.

The information, detailed in Annex 3 of the Circular, should be submitted using the form available in the Forms section below and be sent to the email address siag@cssf.lu in Excel format.

Please enter your data in the relevant fields of the template. The format of the template is fixed and must not be altered. Do not add or delete columns or fields, do not change the format in any other way.

Pursuant to Article 147 of the Law of 17 December 2010 relating to undertakings for collective investment, the CSSF requires specific information on a monthly basis from funds that offer a formal guarantee of repayment in the prospectus to their investors (“guaranteed funds”).

Guaranteed funds are informed by a CSSF letter if based on the contents of their prospectus, they are subject to the monthly reporting requirement. If a fund that offers a formal guarantee to its investors has not received the letter, it should immediately contact the CSSF at the following email address: opc@cssf.lu.

The information to be submitted is detailed in the document “Instructions relating to Table O1.2” available in the Guidance section below and should be sent via the transmission channels in XML format.

In accordance with Chapter 3 of the Law of 16 July 2019 on the operationalisation of European regulations in the area of financial services and Circulars CSSF 20/734, CSSF 20/735 and CSSF 20/736, managers of CSSF-supervised money market funds (MMFs) must report financial information to the CSSF on a quarterly or yearly basis.

Commission Implementing Regulation (EU) 2018/708 of 17 April 2018 defines technical standards with regard to the template to be used by managers of money market funds when reporting to competent authorities as stipulated by Article 37 of Regulation (EU) 2017/1131 of the European Parliament and of the Council of 14 June 2017 on money market funds.

The European Securities and Markets Authority (ESMA) has published money market fund reporting – technical reporting instructions (related to technical reporting instructions, detailed validation rules and the reporting XSD schema) (Ref. ESMA/65-8-6480).

Moreover, a specific version of the auth.093.001.001 ISO20022 message definition must be used by managers of money market funds.

In addition, on 19 July 2019, ESMA published the “Guidelines on the reporting to competent authorities under Article 37 of the MMF Regulation (Ref. ESMA/34-49-168)”.

The information to be submitted corresponds to the common European reporting as developed by ESMA and should be sent via the transmission channels in XML format.

The legal publication of UCI accounts is governed by the relevant product laws.

Article 150 of the Law of 17 December 2010 relating to undertakings for collective investments stipulates that:

“(1) The investment company and the management company, for each of the common funds it manages, shall publish:

• […]
• an annual report for each financial year, and
• a half-yearly report covering the first six months of the financial year.

(2) The annual and half-yearly reports shall be published within the following time limits, with effect from the end of the periods to which they relate:

• four months in the case of the annual report,
• two months in the case of the half-yearly report.

However, for undertakings for collective investment subject to Part II, the time limit of four months for the publication of the annual report referred to in the first indent is extended to six months, and the time limit of two months for the publication of the half-yearly report referred to in the second indent is extended to three months.”

In addition, Article 155 of the Law stipulates that “UCIs shall send […] their annual and half-yearly reports, to the CSSF.”

Article 52 of the Law of 13 February 2007 stipulates that:

“(1) The investment company and the management company, for each of the common funds it manages, must establish:

• […]
• an annual report for each financial year.

(2) The annual report must be available to investors within six months from the end of the period to which it relates.”

In addition, Article 56 of the Law stipulates that “Specialised investment funds must send […] their annual report, to the CSSF.”

Article 23 of the Law of 15 June 2004 stipulates that:

“(1) The SICAR shall draw up a prospectus and an annual report for each financial year.

(2) The annual reports […] shall be made available to the investors within 6 months from the end of the period these reports refer to.”

In addition, Article 28 of the Law stipulates that “The SICAR must send […] its annual reports, to the CSSF.”

In case of occurrence of a significant net asset value calculation error, an instance of non-compliance with the investment rules or other errors as detailed in Circular CSSF 24/856, UCIs must submit to the CSSF in accordance with Circular CSSF 24/856 detailed information in relation to the case occurred.

The entities concerned must file the notification via the eDesk Portal using the notification forms available in the section “UCI notification in accordance with Circular CSSF 24/856” or via the API provided by the CSSF, according to Circular CSSF 23/833 on communication means for requests and reporting to the CSSF.

For more information on the submission of the notification in accordance with Circular CSSF 24/856, please consult the CSSF guidelines detailed in the document “UCI notification in accordance with Circular CSSF 24/856 – Practical and technical guidance” below.

Furthermore, the CSSF published the document “FAQ on Circular CSSF 24/856” providing further guidance in relation to some aspects related to this circular.”

All errors/instances of non-compliance detected on 31 December 2024 or before for UCITS, UCIs Part II and SIFs are still governed by the provisions of Circular CSSF 02/77 for which the related notifications must be submitted to the email address opc.prud.sp@cssf.lu, using the applicable notification forms.

In accordance with Circular CSSF 19/708 relating to the electronic transmission of documents to the CSSF, please refer to the list of documents to be transmitted electronically, the relating nomenclature as well as the technical specifications of its annex.

Circular CSSF 21/790, which aims to define the practical rules concerning the self-assessment questionnaire to be submitted annually by Luxembourg UCIs, the engagement of Luxembourg UCIs’ approved statutory auditors as well as the management letter and the separate report to be drawn up annually, also provides in particular that the UCIs must spontaneously communicate to the CSSF, in accordance with Section 2.2. of the Circular, specific information in case the approved statutory auditor (réviseur d’entreprises agréé, “REA”) issues a modified audit opinion in the context of the statutory audit of a UCI.

The minimum specific information that the UCI’s dirigeants (i.e. the management of the UCI) have to transmit to the CSSF each time the audit report drawn up by the REA includes a modified audit opinion at the level of one or more sub-funds of the UCI and/or of the UCI as a whole, is set out in the support document “Follow-up on modified audit opinions issued by the approved statutory auditors in the context of the statutory audit of UCIs” below, which contains the information to be transmitted spontaneously by the UCI to the CSSF via the eDesk Portal in accordance with Circular CSSF 21/790.