Deutsche Bank shares have taken a severe hit, with a 20% drop in value this month, leaving investors concerned about the bank’s financial stability. The German bank’s shares have been on a downward spiral, with an 8.8% decrease for Deutsche Bank and an 8% drop for Commerzbank by mid-afternoon in Frankfurt. Investors’ fears have been fueled by the recent news that Deutsche Bank failed to settle with the U.S. Justice Department regarding investigations related to…