A few sectors were able to buck the downward trend on Friday, most notably airlines and brokerages, although few others were spared selling.
She sees enterprise-software companies taking a hit after Sept. 11.
Earnings reports flow in from technology and industrial names.
Volume is heavy as earnings from tech companies roll in.
Volume is extremely heavy in the extended session as quarterly results dominate the news.
Tech stocks dominate the extended session. Applied Materials and KLA-Tencor also fall.