FRANKFURT AM MAIN, GERMANY - FEBRUARY 20:  A postbox is filled at the headquarters of the S&K investment group the day after police raided the company's offices on February 20, 2013 in Frankfurt, Germany. Police made six arrests across Germany and state prosecutors are charging that the company has swindled investors out of investments totaling over one hundred million Euros. At least one of the company's founders, Jonas Koeller and Stephan Schaefer, was among those arrested yesterday.  (Photo by Hannelore Foerster/Getty Images)