China is raising lots of cash
This time, Beijing is cutting its Treasury holdings out of a weakened position as it tries to stave off more declines in its currency. China is also propping up its stock market, which lost half its value in the span of just a few months this summer.
"Capital outflows have skyrocketed in China and the yuan is under intense selling pressure. The only thing they could do is sell Treasuries to buy their own currency," said Walter Zimmerman, chief technical analyst at United-ICAP.