Ughhhh.....that is not what efficiency means. LOL.
http://www.investopedia.com/terms/p/price-efficiency.asp
"The semi-strong version of EMH holds that while prices are efficient, they react instantaneously to new information, while the strong version of EMH maintains that asset prices reflect not just public knowledge, but private insider information as well."
Semi-strong-form efficiency[edit]
In semi-strong-form efficiency, it is implied that share prices adjust to publicly available new information very rapidly and in an unbiased fashion, such that no excess returns can be earned by trading on that information. Semi-strong-form efficiency implies that neither fundamental analysis nor technical analysis techniques will be able to reliably produce excess returns. To test for semi-strong-form efficiency, the adjustments to previously unknown news must be of a reasonable size and must be instantaneous. To test for this, consistent upward or downward adjustments after the initial change must be looked for. If there are any such adjustments it would suggest that investors had interpreted the information in a biased fashion and hence in an inefficient manner.

