CNNMoney | Volatility returns; Merkel challenges Trump; Oil jumps CNNMoney Volatility returns; Merkel challenges Trump; Oil jumps. by Ivana Kottasová @ivanakottasova June 30, 2017: 5:24 AM ET. premarket friday Click chart for more in-depth data. 1. The return of volatility: Thursday was a rough day for stocks. The Dow Jones ... |