In early trading on Wednesday, shares of McKesson topped the list of the day's best performing components of the S&P 500 index, trading up 5.9%. Year to date, McKesson registers a 32.5% gain.
And the worst performing S&P 500 component thus far on the day is Autodesk, trading down 4.3%. Autodesk is showing a gain of 11.6% looking at the year to date performance.
Two other components making moves today are Progressive, trading down 4.1%, and AmerisourceBergen, trading up 5.7% on the day.