Considering 30-days investment horizon, Time Warner Inc. is expected to under-perform the Directv. But the stock apears to be less risky and, when comparing its historical volatility, Time Warner Inc. is 1.17 times less risky than Directv. The stock trades about -0.45 of its potential returns per unit of risk. The DIRECTV is currently generating about -0.19 of returns per unit of risk over similar time horizon. If you would invest 4,902 in DIRECTV on April 26, 2012 and sell it today you would lose (262.00) from holding DIRECTV or give up 5.34% of portfolio value over 30 days.
Diversification
Very weak diversification
Overlapping area represents amount of risk that can be diversified away by holding Time Warner Inc. and DIRECTV in the same portfolio (assuming nothing else is changed)
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