“One month ago, when observing the record low vol coupled with record high stock prices, we reported a stunning statistic: central banks have bought $1 trillion of financial assets just in the first four months of 2017, which amounts to $3.6 trillion annualized, ‘the largest CB buying on record’ according to Bank of America. Today BofA’s Michael Hartnett provides an update on this number: he writes that central bank balance sheets have now grown to a record $15.1 trillion, up from $14.6 trillion in late April, and says that ‘central banks have bought a record $1.5 trillion in assets YTD.'”