Federal Antimonopoly Service has been trying to reveal any cases of collective domination on the regional retail oil markets. The law says that any three bodies possessing an over 50% share of the market, or any five bodies possessing more than 70% of the market (provided each player has at least 8%), can be classed as an instance of collective domination; such cases have been found in 38 Russian Regions, namely: Bashkortostan, Altai, Karachaevo-Cherkessia, Karelia, Tatarstan, Udmurtia, Chuvashia, Krasnodar Region, Perm Region, Stavropol Region, Amur Region, Arkhangelsk Region, Astrakhan Region, Bryansk Region, Irkutsk Region, Kaliningrad Region, Kaluga Region, Kamchatka Region, Kirov Region, Kostroma Region, Kursk Region, Lipetsk Region, Magadan Region, Murmansk Region, Novgorod Region, Pskov Region, Saint Petersburg, Saratov Region, Sverdlovsk Region, Sakhalin Region, Smolensk Region, Tambov Region, Tula Region, Ulyanovsk Region, Vologda Region, Yaroslavl Region, and Nenetskiy Autonomous Region.

The Federal Antimonopoly Service intends to keep an eye on the oil market operations in these areas to prevent any possible abuse of power.