Palo Alto, Calif.-based HP held 15.5 percent of the worldwide market in the second quarter, while Dell held 14.9 percent, Gartner said. IDC put HP's worldwide market share at 15.1 percent and Dell's at 14.8 percent.
Meanwhile, Dell is growing while HP continues to contract. Dell grew shipments by 15.5 percent, compared with the same quarter a year ago, while HP's shipments declined by 16.2 percent, according to IDC. Both HP and Compaq have been losing market share, but the declines accelerated in this quarter.