The dollar’s rise doesn’t just have an impact on the United States. It has an impact on all those around the world who borrow in dollars. And it can have an enormous impact on those countries that peg to the dollar (Saudi Arabia is the most significant) or that manage their currency with reference to the dollar. China used to manage against the dollar, and now seems to be managing against a basket. But managing a basket peg when the dollar is going up means a controlled depreciation against the dollar—and historically that hasn’t been the easiest thing for any emerging economy to pull off.
And China’s ability to sustain its current system of currency management—which has looked similar to a pretty pure basket peg for the last 5 months or so—matters for the world economy. If the basket peg breaks and the yuan floats down, many other currencies will follow—and the dollar will rise to truly nose-bleed levels. Levels that would be expected to lead to large and noticeable job losses in manufacturing sectors in the U.S. and perhaps in Europe.
Hence there is good reason to keep close track of the key indicators of China’s foreign currency intervention.
The two main indicators I track are now both available for November:
The PBOC’s yuan balance sheet shows a $56 billion fall in foreign exchange reserves, and a $52-53 billion fall in all foreign assets (other foreign assets rose slightly). I prefer the broader measure, which captures regulatory reserves that the big banks hold in foreign currency at the PBOC.