Given investment horizon of 30 days, Level 3 Communications Inc is expected to generate 1.02 times more return on investment than Towerstream. However, Level is 1.02 times more volatile than Towerstream Corporation. It trades about -0.06 of its potential returns per unit of risk. Towerstream Corporation is currently generating about -0.29 per unit of risk. If you would invest  2,230  in Level 3 Communications Inc on May 20, 2013 and sell it today you would lose (34.00) from holding Level 3 Communications Inc or give up 1.52% of portfolio value over 30 days.