weak form

Weak Form Efficiency

A version of the efficient markets theory on how markets work. It holds that the market efficiently deals with most information on a given security and reflects it in the price immediately. Specifically, weak form efficiency states that technical analysis is ineffective and that prices are on a random walk. Investors and academics disagree on how well the model works, but it is less controversial than the semi-strong form of the EMT and the strong form of the EMT.

weak form

A component in the theory of efficient markets that holds that successive changes in security prices are independent of one another. If security markets are efficient to the extent of the weak form, existing prices reflect all the information contained in historical market data. Therefore, the charting of security prices and volume is not useful in projecting future price movements. The weak form of efficient markets supports the random-walk hypothesis. Compare strong form.
References in periodicals archive ?
Further, the weak form of UIP is tested in all cointegrating vectors by H17 and in first cointegrating vectors through His with zero restriction on the coefficient of prices and output.
In the weak form of the homology thesis, the space of positions and the spaces to which it is homologous are not configured in as complicated a manner.
Weak form efficient markets cannot consistently earn excess returns using past prices and returns.
However, in postmodernist poetry there is the narrativity turn, although it is in a weak form.
They first noticed that K22 was able to combat a weak form of the coronavirus that causes mild cold-like symptoms and went on to show that it can fight more serious strains, including SARS and MERS.
They first noticed that K22 was able to combat a weak form of coronavirus that causes mild cold-like symptoms, and went on to show that it can fight more serious strains, including SARS and MERS.
AI, of weak form, is here to stay: Siri and Google car are only a tip of a rapidly emerging iceberg, to mix metaphors.
A miserable record of seven defeats and one draw in Crusaders' visits to Solitude was overturned by Stephen Baxter's men, who capitalised on the champions' weak form and a complete lack of derby day interest.
The emphasis of the following study is confined to analyzing the weak form market efficiency, which pertains to past price behaviors (Fama 1970).
Christian theologian Andrew Linzey observes in a 1994 publication that "Despite the impressive nature of much recent philosophical discussion of animals, its failure to enter seriously and sympathetically into a specifically theological understanding of animals has meant that the case has not been made for the many millions of human beings who continue to adhere, even in a weak form, to Christian doctrine" (Animal Theology, 1994 [italics original]).