Considering 30-days investment horizon, DIRECTV is expected to generate 0.52 times more return on investment than CBS Corporat. However, DIRECTV is 1.93 times less risky than CBS Corporat. It trades about -0.15 of its potential returns per unit of risk. CBS Corporation is currently generating about -0.11 per unit of risk. If you would invest 4,848 in DIRECTV on April 25, 2012 and sell it today you would lose (211.00) from holding DIRECTV or give up 4.35% of portfolio value over 30 days.
Diversification
Poor diversification
Overlapping area represents amount of risk that can be diversified away by holding DIRECTV and CBS Corp. in the same portfolio (assuming nothing else is changed)
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