$MRO is one of biggest losers #stocks today. read more:

Marathon Oil Corporation Common (symbol: MRO) was one of the worst losers
of the trading day today (2015-09-09), losing -8.64%. The number of shares
that changed hands was 33,891,865, or about 3 times the average daily
volume in the stock.
The closing price was $14.91, amounting to a market cap of $10,100,000,000,
about -63.32% off the highest price in the last 12 months. The stock has
been trading at a range between $14.03 and $40.65.
MRO is in the Oil & Gas Production industry, part of the Energy sector.
Looking at its valuation, the stock is now trading at 14.5 times earnings.