Several key tech companies managed to reverse their slide by midafternoon.
was up 7.8%and
was up 8.4%.
began rising after its CFO predicted higher third-quarter semiconductor revenue growth. The stock was up 2.6%.
slid at midday but then edged up 1%.
dropped at the opening but climbed to a 0.2% gain.
also opened down but rebounded to a 2.4% gain. Some box makers continued to benefit from Hewlett-Packard's positive announcement.
was down 20.6%.