 I'm Peter Schach, now CNBC. The tech-related sell-off of recent days was still a factor as Wall Street's mostly negative week drew to a close. The Dow fell 377 points to close at 40,388. The S&P 500 lost seven-tenths of a percent, or about 40 points. The Nasdaq dropped 144 points, or eight-tenths of a percent. The major averages did close off their session lows, but the S&P 500 and Nasdaq still posted their largest weekly declines in three months.