Outlier 1y Zscore: -2.55 for VSTOXX4=18.30 #vol #eur #zscore #zscore http May 03 20172017-05-03 Outlier 1y Zscore: -2.55 for VSTOXX4=18.30 #vol #eur #zscore #zscore https://t.co/1qHs3f3JKa