We recently examined our equity coverage to see which sectors have the greatest concentrations of companies with wide and narrow moats.
I often talk about moats in this column, so forgive me if I sound like a broken record. For those of you who aren't familiar, the idea of an economic moat refers to how likely a company is to keep competitors at bay for an extended period.
Karen Wallace does not own shares in any of the securities mentioned above. Find out about Morningstar's editorial policies.