In early trading on Tuesday, shares of Merck ( MRK ) topped the list of the day’s best performing Dow Jones Industrial Average components, trading up 5.9%. Year to date, Merck registers a 10.4% gain.

And the worst performing Dow component thus far on the day is General Electric ( GE ), trading down 3.8%. General Electric is showing a gain of 3.4% looking at the year to date performance.

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