Shares of Aumann AG (ETR:AAG – Get Free Report) shot up 1.6% on Tuesday . The stock traded as high as €18.36 ($20.18) and last traded at €18.14 ($19.93). 12,173 shares changed hands during trading, a decline of 76% from the average session volume of 50,232 shares. The stock had previously closed at €17.86 ($19.63). […]