Why do retail investors trade? To analyze the impact of professional advice on trading, we combine administrative and survey data from a large German bank. Investors who report that they always rely on their advisor's recommendations have a 25-percent-higher trading volume. Also, for investors...

This paper is a draft for the chapter German banks and banking structure of the forthcoming book The German financial system edited by J.P. Krahnen and R.H. Schmidt (Oxford University Press). As such, the paper starts out with a description of past and present structural features of the German...