Together with the American Martin Weiss, Claus Vogt was chief editor of both German stock exchange letters Sicheres Geld and International ETF Trader. He authors the stock market letter Million-Dollar Contrarian Portfolio, published in the US. In 2004, his book Das Greenspan Dossier, co-written Roland Leuschel, was published, in which he predicted the financial and economic crisis triggered by the bursting of the housing bubble. The book uncovered the monumental monetary policy errors of Greenspan, which in his opinion was responsible for these developments. 2009 Die (Hyper)Inflationsfalle was also published. Vogt completed a business degree at the University of Frankfurt am Main.