The Dow trades above 45,000 for the first time. It may be time to rethink what makes a milestone.

The Dow is on track to top another 1,000-point threshold Friday, but such milestones are growing ever less impressive.

The Dow trades above 45,000 for the first time. It may be time to rethink what makes a milestone.
The Dow is on track to top another 1,000-point threshold Friday, but such milestones are growing ever less impressive.