A look at Nasdaq 10 most-active stocks at 1 p.m.:

Apple Inc. fell .4 percent to $101.11 with 21,642,000 shares traded.

Digital Ally Inc. rose 11.8 percent to $13.98 with 10,773,800 shares traded.

Facebook Inc. rose .3 percent to $75.28 with 12,802,400 shares traded.

Gilead Sciences Inc. fell 1.3 percent to $106.06 with 13,135,400 shares traded.

Intel Corp. fell .2 percent to $34.76 with 11,177,100 shares traded.

InterMune Inc. rose .2 percent to $73.00 with 13,314,300 shares traded.

Micron Technology Inc. fell 1.0 percent to $32.87 with 10,312,200 shares traded.

Plug Power Inc. fell 4.1 percent to $5.76 with 10,175,100 shares traded.

Prospect Energy Corp. fell 4.3 percent to $10.51 with 13,330,600 shares traded.

Sirius XM Radio Inc. fell .4 percent to $3.58 with 19,153,000 shares traded.