S&P 500 Movers: TMUS, HUM
In early trading on Friday, shares of Humana topped the list of the day's best performing components of the S&P 500 index, trading up 17.1%. Year to date, Humana registers a 77.0% gain.
And the worst performing S&P 500 component thus far on the day is T-Mobile, trading down 9.2%. T-Mobile is lower by about 23.4% looking at the year to date performance.
Two other components making moves today are Skyworks Solutions, trading down 7.3%, and Crown Castle, trading up 11.8% on the day.
VIDEO: S&P 500 Movers: TMUS, HUM 
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