Following our tour of techniques, sometimes quite simple, used by some traders. Our desire is always to offer some understanding of market mechanisms, and help you understand how methods used today and very discredited. We recall that many much more complicated techniques are used on the options markets. For example, Black and Scholes, but also the fractal theory, GARCH model, binomial trees, hopping process, Levy, integro-differential equations and many others. (more...)