The Medical group has plenty of great stocks, but investors should always be looking for companies that are outperforming their peers. Is MannKind (MNKD) one of those stocks right now? A quick glance at the company's year-to-date performance in comparison to the rest of the Medical sector should help us answer this question.MannKind is a member of the Medical sector. This group includes 1025 individual stocks and currently holds a Zacks Sector Rank of #5. The Zacks Sector Rank considers 16 different groups, ...