) are higher on the session by 4.42%, currently trading at $68.30. The stock has been moving largely higher over the past five weeks and is currently trading above the 200-day moving average. Options traders are buying calls on the name today. A short while ago the August 2011 $72.50 call traded 2,300 times on open interest of 290 contracts. Overall call volume is now running at 6.28x the daily average with 76% of all calls traded being purchases on the offer. Murphy Oil Corporation is an oil and gas exploration and production company with refining and marketing operations in the United States and the United Kingdom. The company operates primarily as a holding company.