Whether Janet Yellen admits it or not, you can bet that going into the most important Fed meeting ever (until the next one) the supposedly “data dependent” FOMC has taken a good hard look at what’s happening in China in the wake of Beijing’s not-so-smooth transition to a new currency regime. 

We’ve detailed the story exhaustively, so we won’t endeavor to recap it all here, but the short version is that what was billed as a move to give the market a greater role in setting the yuan’s exchange rate actually had the opposite effect – at least in the short run. That is, the PBoC used to manipulate the fix to control the spot and now they simply manipulate the spot to control the fix, but unabated devaluation pressure has forced China to intervene on a massive scale and that intervention recently moved into the offshore market as well, as Beijing scrambled to close the onshore/offshore spread. This is costing China dearly in terms of FX reserves, the liquidation of which was so massive in August as to prompt Deutsche Bank to brand it “Quantitative Tightening”, as the reserve drawdowns are effectively QE in reverse. This is of course the same dynamic that’s been taking place in Saudi Arabia in the wake of the petrodollar’s demise and mirrors the response across EMs which are struggling to support commodity currencies as prices collapse.

Attempts to quantify the scope of China’s reserve burn have become ubiquitous, as the cost of offsetting the outflows from China effectively serves as a proxy for the extent to which the Fed would, were they to hike, be “tightening into a tightening”, as we’ve put it. 

On Wednesday we showed that Beijing liquidated $83 billion in Treasurys in July. That, as we also noted, “is before China announced its devaluation on August 11 and before, as we also first reported, it sold another $100 billion in Treasurys in August.” 

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