The Medical group has plenty of great stocks, but investors should always be looking for companies that are outperforming their peers. Is Align Technology (ALGN) 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.Align Technology is a member of our Medical group, which includes 1054 different companies and currently sits at #4 in the Zacks Sector Rank. The Zacks Sector Rank gauges the str ...