For those looking to find strong Business Services stocks, it is prudent to search for companies in the group that are outperforming their peers. Has Allot Communications (ALLT) been one of those stocks this year? Let's take a closer look at the stock's year-to-date performance to find out.Allot Communications is one of 316 individual stocks in the Business Services sector. Collectively, these companies sit at #5 in the Zacks Sector Rank. The Zacks Sector Rank includes 16 different groups and is listed in o ...