انعكاسات متطلبات الإفصاح المحاسبي الاختياري على كفاءة سوق الأوراق المالية و عدم تماثل المعلومات

الملخص EN

The quality accounting information and the degree of mandatory disclosure are considered the main factor of the stock market, but the voluntary disclosure may decrease the confidence factor in dealing with that market.

this study aims at exploring the effect of the voluntary discloser, this is done through the explanation of the fact of the in his requirements, and also the effect of voluntary discloser in stock market efficient and his role for information asymmetry solution.

the research adopted the historical method to review the previous studies, the deductive method analytical for identified factors effected by the voluntary disclosure and his theories, and the relation between the voluntary disclose level for the stock market efficient and the information asymmetry.

the researcher concluded that it is still two types of disclosures: the mandatory disclosure and, and the voluntary disclosure level is determined based on data costs, users' needs, and competitors 'benefits.

in conclusion, the researcher asserts the necessity of developing for voluntary discloser measurement by enterprises to decrease risk, and in order to ensure acceptable returns for owners and stockholders and protect the stakeholders.