Nikolai Maximov founded steel mini-mill developer Maxi Group and sold his controlling stake to billionaire Vladimir Lisin's NLMK in 2007.

FORBES: Nikolai Maximov & family

The Market Vectors Russia ETF ( RSX) gives investors access to four firms that are not traded on US markets: state-run oil major Rosneft, VTB Bank, Novatek and NLMK Steel.

FORBES: Russian Energy Stocks in 2011