The Wall of Worry just keeps adding more bricks. Although there has been much talk about the impact of low oil prices on the U.S. high yield debt market and by extension the U.S. banks that did the lending, the bigger worry now is the stability of the European banking system. It is like 2011 all over again. Also, there continue to be signs of an insidious corporate “earnings recession.” Such headlines add to the steady stream of “worry bricks” that have so confounded disciplined fundamental investors for at least the past seven months or so.