In early trading on Thursday, shares of A O Smith topped the list of the day's best performing components of the S&P 500 index, trading up 12.5%. Year to date, A O Smith registers a 31.3% gain.
And the worst performing S&P 500 component thus far on the day is eBay, trading down 7.2%. eBay is showing a gain of 43.5% looking at the year to date performance.
Two other components making moves today are Altria Group, trading down 5.2%, and Ford Motor, trading up 11.9% on the day.
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