Insider trading act is penalised ultima ratio with the aim of fighting against manmade market actions which outrage the principle of public disclosure and the element of trust in order to establish equality and good faith in capital markets. Insider trading is first disposed as a crime among the other capital market crimes (art.47/1-A-1) in the Capital Market Code no.2499 dated 28.07.1981 with the Amendment to the law no.3794 dated 29.04.1992 and at the present time it is rearranged as a self-contained crime type in article 106 of the Capital Market Code no.6362 dated 06.12.2012. In this study, the crime of insider trading is examined –in particular through the controversial points- as a comparative analysis between abrogated and current dispositions in Turkish Law.