Net worth of wealthiest investment managers globally 2014

The source adds the following information: "Net worth calculations include dividend income paid and proceeds from the sale of public and closely held shares. Taxes are deducted based on prevailing income, dividend and capital gains tax rates in a billionaire’s country of residence. Taxes are applied at the highest rate unless there is evidence to support a lower percentage. For calculations of cash and other investable assets, a hybrid return based on holdings in cash, government bonds, equities and commodities is applied."