In my view, it is especially striking that the aggregate total assets of the securities trading banks operating in Germany up to now (as a peer of investment firms) came to around € million; now there will be individual institutions in this segment with total assets ranging from € billion to over € billion.
Individual investment firms therefore account for many times the existing overall market in Germany. Let me conclude here with a caveat: This is only a snapshot for day one and certainly not the end of the story. The figures may further develop depending if a hard Brexit will happen or not and how the future relationship between the UK und EU will be shaped.