The basic aims of market regulation are in part to safeguard consumer interests on the financial markets, and in part to promote more efficient markets in a broad sense – these two aims very often coincide. The aims also have a clear underlying common denominator; that is,the desire to ensure all players the high quality level of information needed for them to reasonably assert themselves on the market. The basic problem that market regulation must address regards the uneven access to information and know-how, between various professional players as well as between professional players and households.