Stock markets are a sea of green, punctuated by frothy highs as markets roll past shocks such as U.K. elections, North Korean missiles, Persian Gulf confrontations and tweet-storms from U.S. President Donald Trump. Normally, all that good market news would seem simply good, right? But a growing chorus of strategists, investors and even policy makers is fretting that there should be more downs to go along with those ups. They’re worried that what’s called volatility in the markets is too low — and that the low readings in market measures known as fear gauges could foreshadow a giant disturbance down the road. Read more →