The Luxembourg Commission de Surveillance du Secteur Financier (CSSF) published monthly statistics for undertakings for collective investment (UCIs), showing total net assets of UCIs under the 2010 Law, specialised investment funds and SICARs fell to EUR 5,749.779 billion as at 31 March 2025, from EUR 5,957.264 billion a month earlier. The EUR 207.485 billion monthly decline combined positive net capital investment of EUR 16.319 billion with a negative financial market impact of EUR 223.804 billion, while net assets remained 4.82% higher over twelve months. The number of UCIs decreased to 3,124 (from 3,131), comprising 2,066 umbrella structures with 12,461 sub-funds and 1,058 traditional structures, for a total of 13,519 active fund units. The update linked March market performance primarily to uncertainty from US tariff announcements and currency moves, noting broad equity losses including in US equities, while net subscriptions were strongest in European and Eastern European equities; fixed income UCIs also recorded net inflows led by EUR money market funds, despite negative bond returns in several categories. The CSSF registered nine UCIs on the official list (five UCITS Part I, three 2010 Law Part II UCIs and one SIF) and deregistered sixteen (seven UCITS Part I, two Part II UCIs, two SIFs and five SICARs), and noted one UCI whose designated management company was authorised in another EU Member State under Directive 2009/65/EC.