S&P 500 Movers: WDC, GWW
In early trading on Friday, shares of W.
.
Grainger topped the list of the day's best performing components of the S&P 500 index, trading up 5.3%.
Year to date, W.
.
Grainger registers a 11.1% gain.
And the worst performing S&P 500 component thus far on the day is Western Digital, trading down 12.6%.
Western Digital is lower by about 9.6% looking at the year to date performance.
Two other components making moves today are Monolithic Power Systems, trading down 8.3%, and Enphase Energy, trading up 4.5% on the day.