Explanation : This observation contradicts semi-strong and strong form market
efficiency. Semi-strong-form efficient markets reflect all publically
available information which includes financial statement data (including
book value of a company) and financial market data (market price of a
security). A strong-form efficient market is, by definition, also semi-strong
and weak form efficient. This observation is not a contradiction to weakform market efficiency as financial statement data is not reflected in a
security‟s price in such markets.