Dean Foods, Toll Brothers, Dyanavax, Orexigen and Comcast 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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Dean Foods Co. (DF), up $1.98to $16.40

The milk company reported better-than-expected quarterly financial results and a stronger-than-expected financial outlook.

Toll Brothers Inc. (TOL), up 73 cents to $32.95

The homebuilder reported a 29 percent boost in preliminary fourth-quarter revenue on an increase in home sales at higher prices.

Rayonier Inc. (RYN), down $5.08 to $28.82

The forest products company reported positive quarterly profit, but restated prior results and will realign its strategy.

Merck & Co. (MRK), down 53 cents to $58.81

The pharmaceutical company won't continue development of a shortened hepatitis C treatment following interim study results.

Nasdaq

Dynavax Technologies Corp. (DVAX), up $14.39 to $15.98

The biotechnology company said an independent board recommended continuing a pivotal study on a potential hepatitis B vaccine.

Orexigen Therapeutics Inc. (OREX), up $1.28 to $5.13

The drug developer reported better-than-expected quarterly profit and revenue on milestone payments associated with Contrave.

Comcast Corp. (CMCSA), down $2.20 to $52.95

The cable television provider's stock slumped after President Obama issued a statement calling for more industry regulations.

Gogo Inc. (GOGO), up $1.77 to $18.41

The in-flight internet service company reported worse-than-expected quarterly profit and reaffirmed its fiscal 2014 outlook.