Market led by more than 5 percent gain by UnitedHealth.
Stocks extended a record-setting run into a sixth straight week.
Technology companies lead U.S. stocks higher.
U.S. stock indexes retreated from their record highs Thursday.
U.S. stocks edge up just enough to set more records as technology, health care and household goods companies move higher.
The Standard & Poor’s 500 index added 5.91 points, or 0.2 percent.
S&P healthcare index moved 0.67 percent lower.
Nasdaq ended up for a ninth straight day.
S&P 500 index stretched its streak of gains to the longest since 2013.
S&P 500 climbed 3.16 points.