and Timur Artemiev in 2008. By October 2008, he sold 49.9% to VimpelCom.

Mamut acquired 60% of the Spar Moscow Holding in 2009. He also acquired the Torpedo-ZIL football club for the symbolic price of $1. Two years later, in 2011, he invested in the Nomos-Bank. He is a large investor in Ingosstrakh, the insurance company, and Troika-Dialog, an investment bank. He has also invested in Polymetal International,