It is no longer news to argue that economics is performative, that it does not only describe markets, but takes part in producing or manufacturing them. Once accepted as close to a matter of fact, the performativity argument risks becoming too much of a general statement. So, what’s next for performativity? This chapter turns the performativity into an empirical research agenda which moves from demonstrating the existence of performativity to putting the performativity argument to the test and investigate sites and modes of performativity. We need to distinguish between the performativity of research as constitutive, that is how knowledge production has an effect on the world; while simultaneously being aware that this is not by itself enough to effectively shape actual markets. To find empirical and analytical ways to observe performativity in action, we go back to one of the original sites from where the performativity of economics argument was developed: economic and marketing experiments. We find that both much more is made in these settings than the making of actual markets, for instance the making of economics as a discipline and so also knowledge of markets, and much less, as the markets produced in these settings do not always move out of them.