Given investment horizon of 30 days, NYSE is expected to generate 0.38 times more return on investment than Rediff. However, NYSE is 2.63 times less risky than Rediff. It trades about -0.32 of its potential returns per unit of risk. Rediff.com India Ltd. is currently generating about -0.51 per unit of risk. If you would invest 807,079 in NYSE on April 24, 2012 and sell it today you would lose (52,989) from holding NYSE or give up 6.57% of portfolio value over 30 days.
Diversification
Weak diversification
Overlapping area represents amount of risk that can be diversified away by holding NYSE and Rediff.com India Ltd. in the same portfolio (assuming nothing else is changed)
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