The foreign data is from the US TIC report.
The charts are from goldchartsrus.com.
I have added a last chart of Fed Holdings, from the St. Louis Fed data, at the suggestion of my friend Arby.
"The world needs a new generation of policymakers who don’t hobnob with billionaire speculators and who understand workers’ concerns. Unfortunately, the change will not come smoothly. Political turmoil in the West is very much about this. A heavy price has to be paid to bring about the change."
Andy Xie, SCMP 21 Sept 2018