US stocks end volatile session lower in aftermath of global tech outage

A Crowdstrike software glitch caused U.S. stock declines Friday. Dow Jones, Nasdaq, S&P 500 dropped amid high volatility. Nvidia, Philadelphia SE Semiconductor Index fell. Fed targets 2% inflation. Russell 2000 declined. Strong second-quarter earnings; Tesla, Alphabet next week. Eli Lilly, Intuitive Surgical, SLB rose. Travelers, Netflix fell. Negative weekly performance. Volume down, investor anxiety up.