Ocwen, Gilead Sciences, Caesar's, Blackberry, and Achillion are big market movers

IndustriesAssociated Press

Stocks that moved substantially or traded heavily Monday on the New York Stock Exchange and the Nasdaq Stock Market:

NYSE

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Ocwen Financial Corp., down $5.89 to $16.01

The subprime mortgage servicer's executive chairman will resign in a settlement that also provides $150 million to homeowners.

Nabors Industries Ltd., down 53 cents to $13.10

The oil drilling services company's stock fell as the price of oil continued its monthslong decline on prolonged weak demand.

Nasdaq

Enanta Pharmaceuticals Inc., up $4.70 to $51.32

The biotechnology company's development partner AbbVie Inc. received FDA approval for the Viekira Pak hepatitis C treatment.

Gilead Sciences Inc., down $15.55 to $92.90

Viekira Pak, a competitor to Gilead's hepatitis C treatments Sovaldi and Harvoni, was named the preferred treatment by the nation's largest pharmacy benefits manager.

Achillion Pharmaceuticals Inc., up $1.28 to $15.49

The biotechnology company reported positive results from two studies focusing on a treatment regimen for hepatitis C patients.

Caesar's Entertainment Corp., up $1.51 to $15

The casino operator will buy an affiliate in an all-stock deal, giving shareholders a 62 percent stake in the combined company.

Blackberry Ltd., up 69 cents to $10.68

The company is working with Boeing Co. to develop a smartphone with high-tech security features aimed at government agencies.

Taser International Inc., up $2.08 to $26.06

The stun gun and body camera maker reported nearly 1,900 orders received and expected to ship during the fourth quarter.