We provide methods of decomposing the variance of world national incomes into components in such a way as to indicate the most important risk-sharing opportunities, and, therefore, the most important missing international risk markets to establish. One method uses a total variance reduction...

[...]We address several questions in this paper. First,how could macro markets be useful to the average person?Second, how large are the potential benefits from diversificationif these markets were to be introduced andused optimally? Third, can existing financial marketsachieve a similar degree...