Two fun charts below comparing mkt cap to GDP in the US and Japan. Interesting to see they have similar medians, as well as peaks and troughs. From VectorGrader:
(You can also find more info at the World Bank..Would be fun to test the historical performance for developed and emerging mkts based on this indicator. Not sure how well it would do across the two since emerging likely has much less of economy as public stocks?)
and US
