With the stock market in record-high territory and up about 35% off the April lows, market participants clearly haven’t been too scared lately. But that doesn’t mean there aren’t plenty of things to worry about. Just because risks haven’t affected markets much lately — subprime auto loan bankruptcies notwithstanding — doesn’t mean they won’t in the future. In that “spirit,” as Halloween approaches, we discuss what scares us about the economy and financial markets.