I have a question (not a flame):
What is the source of the data and does it include mortgages on US properties held by overseas institutions?
Various. Sorry I can’t repost all the links, but I was just busting through them left and right and forgot to note them.
The two solid figures (which you can Google) are $12 Trillion and 4%.
The rest are just hypotheticals anyway. And no, I didn’t see any data on foreign vs domestic holdings.