56 Strong Form EMH

This video concludes our exploration of the efficient market hypothesis by delving into the strong form. We discuss how, even with private information, consistent abnormal returns should not be achievable in a strong-form efficient market. This implies that insider trading, even for those with privileged knowledge, should not lead to predictable profits. The concept of insider trading is explained, highlighting how individuals within a company possess information about future events that outsiders lack. We examine how this private knowledge could theoretically be used to profit from market movements. However, the video also explores the difficulty in proving insider trading and the theoretical implications for strong-form market efficiency. If markets are strong-form efficient, even insider information would be incorporated into prices, rendering it unprofitable. We review the three levels of market efficiency: weak, semi-strong, and strong, and their respective implications for technical analysis, fundamental analysis, and insider trading. The video emphasizes that strong-form efficient markets are theoretically rare in reality. Visit AxiomTutoring.com and subscribe to @AxiomTutoringCourses.