Claude Marx, director general of the Commission de Surveillance du Secteur Financier (CSSF), said total exposure to Russia was 18.2 billion euros ($20.02 billion), with two-thirds in equities and the rest in bonds.
Marx told a conference held by Luxembourg funds industry body ALFI that 61 funds have more than 10% of assets in Russian securities, and 41 are suspended.
($1 = 0.9092 euros)
(Reporting by Huw Jones and Carolyn Cohn)