Midday movers: Exxon Mobil, Chevron, Hess & more

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Scott Mlyn | CNBC

Take a look at some of Monday's midday movers:

Exxon Mobil - The crude producer and others including Chevron, Hess and BP dropped as oil prices fell below $50 a barrel for the first time in five years.

Energy - The weakest sector in the S&P 500 was led by Denbury Resources, Noble Energy, Anadarko Petroleum and Transocean.

Utility - Also a weak sector, led by NRG Energy, Exelon, AES and AGL Resources.

Gilead Sciences - The drug developer rose after CVS Health said it would make the company's hepatitis C pills the exclusive treatment option for beneficiaries of multiple benefit plans.

Kite Pharma - The drug developer gained after it and Amgen said they entered a deal to develop and market cancer immunotherapies.

Novartis - The drug developer climbed after staff reviewers at the U.S. Food and Drug Adminstration recommended approval of the company's copy of Amgen's cancer drug Neupogen.

Biogen Idec - The drug developer fell after Nomura downgraded the stock to neutral from buy.

Ford Motor - The car manufacturer declined after Citigroup downgraded its stock to neutral from buy.

Morgan Stanley - The bank dropped after saying it fired an employee it said swiped customer data.

SunTrust Banks - - The regional bank fell after it said its fourth-quarter 2014 results would include a $145 million charge.

Gap - The retailer gained after Susquehanna upgraded the stock to positive from neutral.

Isis Pharmaceuticals - The drug developer advanced after Johnson & Johnson said it will pay the company up to $835 million for the option to license three drugs.

Tiffany - The upscale jewelry fell after KeyBanc downgraded the stock to hold from buy.

(See CNBC's Market Insider Blog)

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