An unknown buyer acquired 9% stake in Avangard-Finans, Ooo from Avangard Joint Stock BANK (MISX:AVAN) on December 15, 2017. An unknown buyer completed the acquisition of 9% stake in Avangard-Finans, Ooo from Avangard Joint Stock BANK (MISX:AVAN) on December 15, 2017.