The Business Services group has plenty of great stocks, but investors should always be looking for companies that are outperforming their peers. Has Byrna Technologies Inc. (BYRN) been one of those stocks this year? Let's take a closer look at the stock's year-to-date performance to find out.Byrna Technologies Inc. is a member of our Business Services group, which includes 316 different companies and currently sits at #5 in the Zacks Sector Rank. The Zacks Sector Rank includes 16 different groups and is lis ...