Dow Movers: MRK, CVX

In early trading on Thursday, shares of Chevron topped the list of the day's best performing Dow Jones Industrial Average components, trading up 1.9%.

Year to date, Chevron registers a 27.0% gain.

In early trading on Thursday, shares of Chevron topped the list of the day's best performing Dow Jones Industrial Average components, trading up 1.9%.

Year to date, Chevron registers a 27.0% gain.

And the worst performing Dow component thus far on the day is Merck, trading down 3.5%.

Merck is lower by about 9.1% looking at the year to date performance.

Two other components making moves today are Amgen, trading down 1.8%, and Dow, trading up 1.3% on the day.