Yantarenergosbyt Open Joint-Stock Company acquired 19.99% stake in Public Joint Stock Company Group of Companies TNS energo (MISX:TNSE) on December 10, 2021. ntarenergosbyt Open Joint-Stock Company completed the acquisition of 19.99% stake in Public Joint Stock Company Group of Companies TNS energo (MISX:TNSE) on December 10, 2021.