Dr. Stefan Wilhelm met Dr. Alexis Eisenhofer in 1998 during a summer academy of the German National Academic Foundation. For 20 years now, both have been united by a deep friendship, collegial cooperation and a common interest in financial markets and financial market data. From 2015 to 2019, Dr. Stefan Wilhelm headed the product management of financial.com AG, a provider of stock market information systems based in Munich. Since this year he has assumed the role of Chief Data Officer at financial.com. Previously, he held various positions at financial.com and ATACAMA Capital, including head of the market data department, data scientist and investment advisor. His great passion is statistical data analysis and visualization with R and the new technical possibilities of the networked world. He studied Business Informatics at the Technical University of Dresden and received his doctorate in Finance and Econometrics under Prof. Dr. Heinz Zimmermann at the University of Basel.