The Utilities group has plenty of great stocks, but investors should always be looking for companies that are outperforming their peers. Has MDU Resources (MDU) been one of those stocks this year? Let's take a closer look at the stock's year-to-date performance to find out.MDU Resources is one of 106 individual stocks in the Utilities sector. Collectively, these companies sit at #13 in the Zacks Sector Rank. The Zacks Sector Rank includes 16 different groups and is listed in order from best to worst in term ...