The riskiness of individual assets should be considered for the asset in isolation should be considered in the context of the effect on overall portfolio. Viability should be combined with the riskiness of other individual assets in equal proportions should be considered in the context of the effect on overall portfolio volatility, and should be combined with the riskiness of other individual assets in the proportions of these, constitute the entire portfolio is smaller compared to the riskiness of a portfolio of those individual ass