I'm thinking of becoming a market maker. Already passed some obligated arithmetic and iq-tests. Still have a few questions though.. How specialised will you be after a few years. I mean, how difficult is it to switch job after six years (to the tradingfloor of a bank, for instance)? I'm living in the neighboorhood of Belgium. What are the best option houses in this aera? I think it are Optiver, IMC, Saen, Van der Moolen.. What do you guys think of these firms? And what are the biggest of the world? Any expierence in general with this profession/ company's? I than mean compensation packages (bonusses, salary). Thx in advance. It will help me decide the direction of my career.