In early trading on Wednesday, shares of Varian Medical Systems ( VAR ) topped the list of the day's best performing components of the S&P 500 index, trading up 10.9%. Year to date, Varian Medical Systems registers a 4.1% gain.
And the worst performing S&P 500 component thus far on the day is DXC Technology ( DXC ), trading down 10.3%. DXC Technology is lower by about 4.3% looking at the year to date performance.
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