You're wrong. I believe you're referring to this statistic: "... 0.7% of the global adult population, and they account for 45% of global wealth"[1] The U.S., ON PAPER, holds about 1/4(25.40%) of global wealth not half. [2]
Allianz's 2015 report indicates North America holds 45% of all global financial assets. Unless you're pretending that Canada and Mexico hold 20% of all global assets, your figures are wildly off the mark (Canada is less rich than the US per capita on average, and Mexico is far less so); at a minimum the US holds 40% to 42% of all global wealth.
"Some 39 percent of the world’s wealth belongs to Americans, while Western Europe accounts for another 31 percent."
And that was before the huge asset rebound in the US, and was a drop of 12% due to the great recession.
http://economix.blogs.nytimes.com/2010/09/14/americas-domina...
Allianz's 2015 report indicates North America holds 45% of all global financial assets. Unless you're pretending that Canada and Mexico hold 20% of all global assets, your figures are wildly off the mark (Canada is less rich than the US per capita on average, and Mexico is far less so); at a minimum the US holds 40% to 42% of all global wealth.
https://www.allianz.com/v_1443702256000/media/economic_resea...