Quote from TraderZones:
This is not correct at all. At any one point, the market priced in what could be priced in. Market price includes and is moved by expectations, which is quite within EMH.
However the market is a living, breathing organism. Expectations are not something easily quantified or rationalized, and they change with every report and for other reasons.
The trail of bodies left by the market, in spite of the many ET folks, internet vendors and others claiming great success, is a very strong testimony to the efficiency of the market. Whether weak, strong or otherwise efficient depends on the times, the opinions of its detractors & adherents, etc. etc.