NEW YORK (AP) — Shares of some top computer companies are up at 1 p.m.:

Apple Inc. rose $15.31 or 2.8 percent, to $553.06.

Dell Inc. rose $.05 or .5 percent, to $9.50.

Hewlett Packard Co. rose $.04 or .3 percent, to $13.86.

International Business Machines Corp. rose $.65 or .3 percent, to $190.75.

Lexmark International Inc. rose $.24 or 1.1 percent, to $21.76.