There are a few generally accepted rules that apply to most Latin abbreviations. The major style manuals (MLA, APA and Chicago) agree that Latin abbreviations should be kept out of the main body of a text-that is, they should not appear in ordinary sentences within ordinary paragraphs.
Efficient-market hypothesis. Efficient-market hypothesis (EMH) is a theory in financial economics that states that an asset's prices fully reflect all available information.
In other words, the situation where some people cannot be made better-off by reallocating the resources or goods, without making others worse-off. It indicates that a balance between benefit and loss has been achieved. Also called allocative efficiency. See also economic inefficiency and Pareto optimum.