Health Care

Shares of some top health care equipment companies were mixed at the close of trading: Becton, Dickinson & Co. rose $.41 or .3 percent, to $123.72.

Shares of some top managed care companies were down at the close of trading: Aetna fell $.30 or .4 percent, to $78.09.

Shares of some top medical devices companies were mixed at the close of trading: Allergan fell $3.35 or 1.8 percent, to $182.81.

Shares of some top biotechnology companies are down at 1 p.m.: Amgen Inc. fell $1.59 or 1.1 percent, to $142.50.

Shares of some top biotechnology companies were down at the close of trading: Amgen Inc. fell $.45 or .3 percent, to $143.64.

Shares of some top managed care companies are mixed at 10 a.m.: Aetna rose $.11 or .1 percent, to $78.50.

Shares of some top biotechnology companies are mixed at 10 a.m.: Amgen Inc. fell $1.16 or .8 percent, to $142.93.

Shares of some top pharmaceuticals companies are up at 10 a.m.: Baxter International Inc. rose $.07 or .1 percent, to $68.01.

Shares of some top health care equipment companies are up at 10 a.m.: Becton, Dickinson & Co. rose $.72 or .6 percent, to $123.38.

Shares of some top medical devices companies are up at 10 a.m.: Allergan rose $4.94 or 2.8 percent, to $184.19.

A hedge fund run by a famed investor says it has taken a large stake in Amgen and now wants the biotech drugmaker to consider splitting up into two.

Shares of some top biotechnology companies were up at the close of trading: Amgen Inc. rose $6.58 or 4.8 percent, to $144.09.

Shares of some top pharmaceuticals companies were mixed at the close of trading: Baxter International Inc. rose $.70 or 1.0 percent, to $67.94.

Shares of some top pharmaceuticals companies are mixed at 1 p.m.: Baxter International Inc. rose $.18 or .3 percent, to $67.42.

A look at the 10 biggest percentage gainers on Nasdaq at 1 p.m.: MYOS Corp. rose 29.6 percent to $9.80.

A look at the 10 biggest percentage decliners on Nasdaq at 1 p.m.: Fauquier Bankshares Inc. fell 14.0 percent to $18.49.

Shares of some top health care equipment companies are mixed at 1 p.m.: Becton, Dickinson & Co. rose $1.05 or .9 percent, to $122.78.

Shares of some top medical devices companies are mixed at 1 p.m.: Allergan rose $3.67 or 2.1 percent, to $181.16.

Shares of some top managed care companies were up at the close of trading: Aetna rose $1.06 or 1.4 percent, to $76.45.

Shares of some top health care equipment companies were up at the close of trading: Becton, Dickinson & Co. rose $.93 or .8 percent, to $122.66.