It appears that the appetite for dollar-denominated assets is not sated quite yet.  From Bloomberg:

International buying of U.S. financial assets unexpectedly climbed to a record in May as investors snapped up American stocks and corporate bonds.

Total holdings of equities, notes and bonds climbed a net $126.1 billion, from $80.3 billion the previous month, the Treasury said today in Washington...

Brad Setser does his usual fine job with the details: 

Demand for US equities and corporate bonds was particularly strong, which does suggest the persistence of private demand for US assets abroad.  Private investors tend to buy corporate bonds and equities; central banks tend to buy Treasuries and Agencies -- though that is changing.

What causes me trouble is the split between private and official purchases, and specifically the absence of any official inflows in the May TIC data.

In case you need visual confirmation:

   

Private_foreign_purchases

Official_tic

   

Brad isn't buying it:

I have a hard time believing that. May was a record month for official reserve growth. China, Russia and Brazil all added to their reserves like crazy.   Those three together combined to add close to $100b to their reserves – and a host of other countries were adding to their reserves too. That money has to go somewhere...

... the Fed’s custodial data doesn’t show a comparable fall off in official demand in May (June is another story).   

The Treasury helpfully explains why the custodial data may differ from its own data:

    1. Differences in coverage: The most important reason for differences between holdings reported in the TIC and the FRBNY custody accounts is a difference in coverage. First, not all foreign official holdings of Treasury securities as reported by the TIC system are held at FRBNY. In particular, Treasury securities held by private custodians on the behalf of foreign official institutions are included in the TIC but not in the FRBNY figures. In this sense, the coverage of the TIC system is broader than that of the FRBNY custody holdings. Second, the custody holdings at FRBNY include securities held for some international organizations as well as for foreign official institutions. In this sense, the coverage of the FRBNY custody holdings is broader than the foreign official designation in the TIC system.

That description suggests advantage Treasury to me, but Brad offers other reasons for distrusting the official (that is, government) flows reported in the TIC data, and sticks to his guns on the belief that central bank diversification continues on.  I won't -- can't really -- argue.  But at the very least the latest report does little to vanquish the sense that global asset demand retains a strong attraction to the USA.