If a market is not weak form efficient, can we conclude it to not be semi-strong or strong form EMH as well? Also does it imply inefficient market?
If a market is not weak form efficient, that means you can use information from past prices to make money trading the markets. That would invalidate the semi-strong and strong forms, since both of these say you can't use public information (like past prices) to make money trading the markets. I don't know what you mean by 'inefficient market', perhaps you could explain. There are various possible definitions of market efficiency (hence weak / semi-strong / strong forms).
