A look at New York Stock Exchange 10 most-active stocks at 1 p.m.:

Advanced Micro Devices Inc. rose .6 percent to $4.25 with 12,903,800 shares traded.

Alcoa Inc. rose 6.0 percent to $15.74 with 37,275,600 shares traded.

Bank of America Corp. fell .1 percent to $15.56 with 21,879,800 shares traded.

CBS Corp. B fell 1.0 percent to $62.73 with 39,106,100 shares traded.

CBS Outdoor Amer rose 2.2 percent to $32.10 with 16,553,900 shares traded.

Ford Motor Co. rose 1.7 percent to $17.40 with 12,191,500 shares traded.

General Electric Co. fell .3 percent to $26.30 with 15,110,600 shares traded.

Molycorp Inc. fell 14.4 percent to $1.94 with 14,468,300 shares traded.

Pfizer Inc. fell .1 percent to $30.11 with 10,073,500 shares traded.

Twitter Inc. rose 2.3 percent to $38.26 with 18,140,600 shares traded.