Assuming 30 trading days horizon, PREMIER OIL ORD 5P is expected to under-perform the Moly. But the otc stock apears to be less risky and, when comparing its historical volatility, PREMIER OIL ORD 5P is 1.0 times less risky than Moly. The otc stock trades about -0.25 of its potential returns per unit of risk. The Moly Mines Ltd. is currently generating about -0.21 of returns per unit of risk over similar time horizon. If you would invest 20.00 in Moly Mines Ltd. on April 26, 2012 and sell it today you would lose (3.00) from holding Moly Mines Ltd. or give up 15.0% of portfolio value over 30 days.
Diversification
Good diversification
Overlapping area represents amount of risk that can be diversified away by holding PREMIER OIL ORD 5P and Moly Mines Ltd. in the same portfolio (assuming nothing else is changed)