Investors interested in Utilities stocks should always be looking to find the best-performing companies in the group. Has Cemig (CIG) been one of those stocks this year? A quick glance at the company's year-to-date performance in comparison to the rest of the Utilities sector should help us answer this question.Cemig is a member of our Utilities group, which includes 105 different companies and currently sits at #6 in the Zacks Sector Rank. The Zacks Sector Rank considers 16 different groups, measuring the ...