Battered by sanctions and oil’s accelerating price crash, OAO Rosneft (ROSN) has lost 38 percent of its market value this year in dollar terms and today the whole company, TNK-BP and all, is worth $50 billion.

OPEC 166th Meeting concludes

According to a review of financial statements released in recent weeks and despite lower crude oil prices, companies drilling in North American tight oil formations recorded improved financial results in third-quarter 2014 as compared with third-quarter 2013

U.S. retail regular-grade gasoline prices continue to decline, averaging $2.82 per gallon (gal) as of November 24.

Winter natural gas prices expected to remain high

Oil producers risk ratings downgrade on low crude price

Nigeria devalues currency as oil prices drop

With Russia's economy battered by economic sanctions and plunging oil prices, President Vladimir Putin has allowed the central bank to administer strong medicine, sharply raising interest rates even as it freed the rouble to float.

Cheap takeover targets in bombed-out sectors of the market have driven M&A activity to seven-year highs in 2014, with oil and gas sector deals coming in at a rate not seen on records going back to the 1970s

Lower oil prices cut two ways for US economy