more market-friendly" value, one closer to that at which offshore Yuan are being sold on the open market. After all, the devaluation wasn't achieved directly by fiat, but instead by allowing the trading price to vary within a 2% band and, officially, no longer holding the reference rate at a fixed value but instead using the previous-days closing price to decide the reference rate for the next day.
The problem is that PBOC seems intent on deciding what the previous day's reference rate is by intervening massively in the market in the final minutes of the trading day. That at least is what appears to be happening based on the volume of trading seen in the last few minutes of the trading day in the above graph.
Does this really matter? Well, to the extent that the PBOC loses credibility through apparent rigging of the market, and to the extent that this change was trumpeted as an example of the Chinese authorities "freeing" the Yuan, supposed boosting Beijing's case for the Yuan joining the major world currencies in the special drawing rights basket, yes it does matter.
[Click here to see the original graph on Neil Gough's Twitter feed]