While the banks are dumping their trading account holdings, or suffering losses for the past year thanks to their fixed income trading positions, they’re apparently moving much of the money, as well as new money, over to their non Treasury, non Agency, and non-MBS investment accounts. Those accounts grew by about $50 billion between late December 2012 and late December 2013. The increase in those accounts has mirrored the rise in stock prices since the fourth quarter of 2011. Or did they lead?  Impact of the Volker Rule