"Buyer Of Last Resort": Guess The Mystery Buyer X

As we previously reported, using TIC data, in the month of June the international community did something it has not done in years - it sold US Treasurys with passionate zeal and reckless abandon. In fact, in that one month alone, $57 billion in total Treasury holdings (from $5.657 trillion to $5.601 trillion) was dumped in order to avoid major and accelerating losses. And yet there was one entity that was buying, on a virtually matched dollar-for-dollar basis, all that the foreign entities had to sell. The distribution of June sales among the select largest holders of US paper, and the sole, solitary buyer, is shown on the chart below.

Guess who this Mystery Buyer X, aka the "sore thumb", is who boldly bought everything that no other man, woman or child wanted to buy in the month of June.