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Global situation of undertakings for collective investment at the end of October 2025

2 December 2025 - Press release

Press release 25/19
As at 31 October 2025, the total net assets of undertakings for collective investment, comprising UCIs subject to the 2010 Law, specialised investment funds and SICARs, amounted to EUR 6,162.301 billion compared to EUR 6,025.044 billion as at 30 September 2025, i.e.…

Countdown to halving settlement times on financial markets - European survey on T+1

1 December 2025 - Communiqué

CSSF draws the attention of Luxembourg financial market participants to a European survey on T+1 and encourages them to share their views on the halving of settlement times for financial transactions across the EU. Starting from 11 October 2027, European Regulation No. 2025/2075 of 14…

2025 Questionnaire on Financial Crime

1 December 2025 - Communiqué

The CSSF will launch its annual AML/CFT questionnaire for the year 2025 on 23 February 2026. The final submission of responses has to be completed through the CSSF eDesk platform the latest by 3 April 2026.
The CSSF will launch its annual online questionnaire for…

CSSF Regulation No 25-05 of 28 November 2025 (only in French)

1 December 2025 - CSSF regulation

concerning systemically important institutions authorised in Luxembourg

Supply-chain attack using NPM packages

28 November 2025 - Press release

Press release 25/18
A sophisticated “worm”, called “Shai-Hulud 2.0” is spreading through the software development world, infecting trusted coding tools (“NPM packages”) used by millions of developers. Unlike typical cyberattacks targeting one company, this attack hijacks the software supply chain itself, poisoning the “building blocks” that…

Technical maintenance on the exchange of reports submitted to the CSSF via external transmission channels (eFile and Sofie) on Friday, 28 November 2025

26 November 2025 - Communiqué

Due to scheduled technical maintenance on our systems, the CSSF informs you that the exchange of the reports listed below will experience disruptions throughout the day on Friday, 28 November 2025. Procedure Submission of reports outside Circular 08/371 (10034) Submission of management letters. Letter of…

Publication of the results of the thematic review concerning measures implemented by Luxembourg investment fund managers to combat the proliferation financing risk

17 November 2025 - Communiqué

In 2024, the AML/CFT division of the UCI On-site Inspections department conducted a thematic review on five Luxembourg-based investment fund managers, which focused on the IFMs’ potential exposure to the risks related to the financing of proliferation of weapons of mass destruction (hereafter “WMD”) at…

EIOPA Opinion on the supervision of liquidity risk management of institutions for occupational retirement provision (IORPs)

17 November 2025 - Communiqué

The Commission de Surveillance du Secteur Financier (“CSSF”) informs institutions for occupational retirement provision (“IORPs”) in the form of pension savings companies with variable capital (“SEPCAVs”) and pension savings associations (“ASSEPs”), as defined in the Law of 13 July 2005 on institutions for occupational retirement…

Circular CSSF-CPDI 25/48

13 November 2025 - CSSF circular

Fonds de garantie des dépôts Luxembourg (FGDL) – Method for calculating the ex-ante contributions pursuant to Article 182 of the Law of 18 December 2015 on the failure of credit institutions and of certain investment firms

New version of the Public Register of the Audit Profession

10 November 2025 - Communiqué

The CSSF has published a new version of the public register of the audit profession to improve user experience and simplify access to related identification information. The register provides access to information on réviseurs d’entreprises agréés (approved statutory auditors) and audit firms in Luxembourg. It…