YUKOS

Russia's No. 2 oil major snapped up a 22% stake and two units of Anglo-Norwegian engineering group Kvaerner for $130 million.LUKOIL

The No. 1 oil company is bidding for up to a 30% stake in Greece's state-run Hellenic Petroleum and is looking to buy a refinery in the U.S.GAZPROM

A unit of Russia's gas monopoly bought a 24.8% stake in Hungary's Borsodchem in June. Now it is eyeing Croatian petrochemical complex Dina.ITERA

The No. 2 gas trader clinched a deal with Spain's Union Fenosa in February for joint bids on electricity privatizations in Eastern Europe.NORILSK NICKEL

The metals giant plans acquisitions aimed at shifting as much as 20% of its assets abroad within five years.

Data: BusinessWeek