Considering 30-days investment horizon, Cablevision Systems Corporation is expected to under-perform the Dish. In addition to that, Cablevision is 1.81 times more volatile than Dish Network Corporation. It trades about -0.34 of its total potential returns per unit of risk. Dish Network Corporation is currently generating about -0.33 per unit of volatility. If you would invest 3,181 in Dish Network Corporation on April 25, 2012 and sell it today you would lose (330.00) from holding Dish Network Corporation or give up 10.37% of portfolio value over 30 days.
Diversification
Modest diversification
Overlapping area represents amount of risk that can be diversified away by holding Cablevision Systems Corp. and Dish Network Corp. in the same portfolio (assuming nothing else is changed)