Northland Securities Upgrades Allot Communications (ALLT) to Outperform Jul 31, 2012 02:44PM
Northland Securities Downgrades Allot Communications (ALLT) to Market Perform Mar 30, 2012 10:30AM
Northland Securities Starts Allot Communications (ALLT) at Outperform Oct 12, 2011 08:58AM