(CNBC) U.S. stocks closed lower Friday, with health care and tech stocks lagging, amid continued uncertainty ahead of next week's scheduled Brexit vote.
"The market's down 1 percent (this week) so it isn't a good week, but there's a tension between event risk ... and profit trends that are starting to look a little better," said Jeremy Zirin, head CIO investment strategist at UBS Wealth Management Americas.
The Dow Jones industrial average traded about 40 points lower after briefly falling more than 100 points. Apple and Merck had the greatest negative impact. Health care traded about 1 percent lower to lead S&P 500 decliners, followed by information technology.
Advertisement - story continues below