Deutsche Bank AG (NYSE: DB) was set to open Thursday down 4.5 percent after German prosecutors raided its Frankfurt headquarters in a money-laundering investigation. What Happened The 2016 Panama Papers prompted prosecutors to investigate Deutsche Bank’s role in helping clients create offshore tax havens for criminally acquired funds. They now allege more than 900 Deutsche customers funneled €311 million through a subsidiary in the British Virgin Islands in 2016, and they accuse two staff...