From Benn Steil & Dinah Walker:
As for bond prices, China’s central bank holds the key.After more than three years of steady appreciation, the RMB has declined over 3% this year – erasing the past year’s rise. Driven by the Chinese government’s desire to re-juice failing economic growth, RMB depreciation has naturally been accompanied by an increase in China’s foreign exchange reserves.China usually allocates about 40 percent of its foreign exchange reserves to Treasuries; so far this year, however, its official holdings of Treasuries have actually declined. What explains this? Given that China comes under pressure from the U.S. Treasury and Congress whenever it appears to be pushing down its currency, China is almost certainly disguising its Treasury purchases by holding them in Belgium.
Read more at EconoMonitor : EconoMonitor » China, Not Piketty, Explains ‘Confused Signals’ in U.S. Asset Prices.