Health Care

Shares of some top biotechnology companies are down at 1 p.m.: Amgen Inc. fell $1.65 or 1.2 percent, to $138.81.

Shares of some top biotechnology companies were down at the close of trading: Amgen Inc. fell $1.64 or 1.2 percent, to $138.82.

Shares of some top managed care companies were down at the close of trading: Aetna fell $1.18 or 1.5 percent, to $79.82.

Shares of some top health care equipment companies were mixed at the close of trading: Becton, Dickinson & Co. fell $.21 or .2 percent, to $113.60.

Shares of some top managed care companies are down at 1 p.m.: Aetna fell $.85 or 1.0 percent, to $80.15.

Shares of some top medical devices companies were mixed at the close of trading: Allergan rose $1.48 or .8 percent, to $179.67.

Shares of some top pharmaceuticals companies were mixed at the close of trading: Baxter International Inc. fell $.26 or .4 percent, to $71.51.

Shares of some top pharmaceuticals companies were mixed at the close of trading: Baxter International Inc. fell $.40 or .6 percent, to $71.88.

Shares of some top pharmaceuticals companies are mixed at 1 p.m.: Baxter International Inc. fell $.41 or .6 percent, to $71.87.

Shares of some top health care equipment companies are mixed at 1 p.m.: Becton, Dickinson & Co. fell $.07 or .1 percent, to $114.05.

Shares of some top medical devices companies are mixed at 1 p.m.: Allergan rose $1.91 or 1.1 percent, to $179.91.

Shares of some top medical devices companies were mixed at the close of trading: Allergan rose $1.70 or 1.0 percent, to $179.70.

Shares of some top managed care companies were mixed at the close of trading: Aetna fell $.69 or .8 percent, to $81.34.

Shares of some top biotechnology companies are down at 10 a.m.: Amgen Inc. fell $1.15 or .8 percent, to $139.91.

Shares of some top managed care companies are mixed at 1 p.m.: Aetna fell $.43 or .5 percent, to $81.60.

Shares of some top medical devices companies are mixed at 10 a.m.: Allergan rose $.43 or .2 percent, to $178.43.

Shares of some top biotechnology companies are mixed at 1 p.m.: Amgen Inc. fell $1.25 or .9 percent, to $139.81.

Shares of some top health care equipment companies were mixed at the close of trading: Becton, Dickinson & Co. rose $.23 or .2 percent, to $114.35.

Shares of some top biotechnology companies were mixed at the close of trading: Amgen Inc. fell $.99 or .7 percent, to $140.07.

Shares of some top managed care companies are down at 10 a.m.: Aetna fell $.44 or .5 percent, to $81.59.