Mikhail Fridman

Russian–Israeli businessman, billionaire, and oligarch

big industrial and financial group in Russia

group of Russian oligarchs

LetterOne Holdings S.A. (LetterOne) is an international investment business based in Luxembourg. With long-term investments in the telecoms, technology, healthcare, and energy sectors, the firm has four main units: L1 Health, L1 Technology, L1 Retail, and L1 Energy, all of which are supported by L1 Treasury Services, which manages the group's liquidity. LetterOne was set up LetterOne in 2013 as part of a broader new investment vehicle using the proceeds from the sale of TNK-BP. LetterOne had $26.8 billion in equity at the end of 2021. Co-founders Mikhail Fridman and Petr Aven stepped down from

Ukrainian state-owned bank