Volatility Is Low But Ambiguity Is Sky High - Prof Menachem Brenner said ambiguity looks a lot like it did between 2004 and 2006, when the measure was on the rise alongside stocks. The main difference, however, is that ambiguity is a lot higher now. (original article Wall Street Journal (Dec 11, 2017) Excerpt: "Two academics are rolling out a new measure of market fear that suggests investors aren’t nearly as complacent as they seem. The gauge of so-called ambiguity, meant to