Well negative rates that are suppose to push people to spend, invest with a little of inflation by charging people with money to keep their deposits. As usual the markets find a different way. The depositors are no longer depositors, they are stashing the money in boxes to keep the the bank. Not deposit, but think of safety deposit boxes that is full of money. How much money....45B Euros of cash is at the German Banks. And they are running out of room to put it places. This is an increase from 15B Euros in 2014.