The efficient markets hypothesis holds only if all investors are rational.a. trueb. false

b. False

Explanation:

The efficient markets hypothesis is the thesis that financial markets operate efficiently in terms of information, so that traded assets (eg bonds, bills) reflect all already available data and react to new information at the fastest possible speed. According to this theory, it is not possible to get more efficiency than expected by using the data already available in the market without the help of chance. According to the effective markets hypothesis, new information is defined as data that is currently unknown but randomly generated in the future.

It is customary to distinguish between three forms of market efficiency:  

- a weak form of efficiency if the value of a market asset fully reflects past information related to a given asset (currently generally available information about the past state of the market, primarily on the dynamics of the market value and volumes of trade in a financial asset);

- a medium form of efficiency, if the value of a market asset fully reflects not only past, but also public information (current information that is becoming publicly available at the moment, provided in the current press, company reports, statements by government officials, analytical forecasts, etc. );

- a strong form of efficiency if the value of a market asset fully reflects all information - past, public and internal (insider information that is known to a narrow circle of people due to official position, or other circumstances).

A.

Explanation: