 USDJPY has had a run higher and back down again:The move up towards 137.40 more or less coincided with the Bank of Japan jumping in to buy JGBs. Whcih is weird as its BOJ policy to try to control yields YCC and they jump in regularly to buy the bonds when yields rise or threaten to rise. And thus confirming easy policy remains in place. But ... we know all this. Who is trading USDJPY, goldfish with a memory span of 3 seconds?Anyway. the Drop in USDJPY is now coinciding with... 