The previous blog post in this series noted that income (measured by labor market earnings) appeared to be 33 percent more persistent than wealth. In their Regional Economist article, Gayle and Hincapié also noted that “using one number to summarize the intergenerational persistence of earnings and wealth cannot answer whether such persistence is due to the inability of the poor to escape poverty or the persistence of wealth and income at the top.”
In equity valuation, residual income represents an economic earnings stream and valuation method for estimating the intrinsic value of a company's common stock. The residual income valuation model values a company as the sum of book value and the present value of expected future residual income. Residual income attempts to measure economic profit, which is the profit remaining after the deduction of opportunity costs for all sources of capital.