效率市場假說

What is the efficient-markets hypothesis and how good a working model is it? Fama: It's a very simple statement: prices reflect all available information.

(b) In an efficient market, a strategy of randomly diversifying across stocks or indexing to the market, carrying little or no information cost and minimal ...

由 EF Fama 著作 · 1970 · 被引用 37647 次 — A market in which prices always fully reflect available informa- tion is called efficient. This paper reviews the theoretical and empirical literature on ...

The efficient markets hypothesis (EMH) argues that markets are efficient, leaving no room to make excess profits by investing since everything is already fairly ...

The efficient-market hypothesis (EMH) is a hypothesis in financial economics that states that asset prices reflect all available information.

The Efficient Market Hypothesis (EMH) is an investment theory stating that share prices reflect all information and consistent alpha generation is impossible.

2022年5月11日 — The efficient market hypothesis argues that current stock prices reflect all existing available information, making them fairly valued as ...

2024年2月23日 — The efficient-market hypothesis claims that stock prices contain all information, so there are no benefits to financial analysis. The theory has ...

效率市場假說（英語：Efficient-market hypothesis，縮寫為EMH），又譯為效率市場假說，一個經濟學學說，由尤金·法馬（Eugene Fama）於1970年深化並提出的，是投資學中 ...