Negative interest rates have made stuffing money into your mattress more attractive than putting it in a bank– at least in Germany.
Let’s hope not too many Germans all get the same idea at the same time. There would be a run on mattresses as well as a run on banks. Marx my words…
http://www.wsj.com/articles/german-savers-lose-faith-in-banks-stash-cash-at-home-1472485225