Weak-Form Efficiency

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Weak-form efficiency

A pricing theory that the price of a security reflects the past price and trading history of the security. Theory implies that security prices follow a random walk. Related: Semistrong-form efficiency, strong-form efficiency.

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.

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Efficient Market Hypothesis Semistrong-Form Efficiency Strong-Form Efficiency Weak Form Weak Form Efficiency			A capital market is said to be weakly efficient or satisfy weak-form efficiency if it fully incorporates the information in the past stock prices. The random walk hypothesis for the Zimbabwe Stock Exchange: January ... by Sunde, Tafirenyika; Zivanomoyo, James / Journal of Social Sciences For example, a market would be described as having weak-form efficiency if it were impossible to make abnormal profits by using past prices to make to make decisions about when to make abnormal profits to buy and sell securities. Can You Make A Killing in the Securities Market in 2007? by Franklin R. West / Finance and Investment community As weak-form efficiency implies past and future fund performances are independent (Fama 1970, 1991), this research assumes quarterly fund returns are not related. Bank fund management challenges and opportunities by Sing, Tng Cheong / Singapore Management Review			Water in the Tariff water line capacity Water Pollution Liability Water Quality Improvement Act of 1970 Water Quality Insurance Syndicate water rights water table Watercraft Endorsement Watercraft Nonowned Insurance Watered Stock Watermark waters of the United States Wave Waybill Ways and Means Advances Ways and Means Committee WD Weak Weak Dollar Weak Dollar Policy Weak Form Weak Form Efficiency Weak Hands Weak Market Weak Sister Weak-Form Efficiency Weakest Link Theory Wealth Wealth Added Index Wealth Creation wealth effect Wealth Tax Wealthy Weapon of Mass Destruction wear and tear Wear and Tear Exclusion Wearout Factor Weather Derivative Weather Future Weather Insurance Weather-Related Sale Web 2.0 Web Browser Web Page Web Press Web Server Web Tension Webb-Pomerene Act of 1918 Webb-Pomerene Association Webcam Weber's Law			Weak side Weak Signal Propagation Reporter Weak signals Weak signals Weak signals Weak signals Weak signals Weak Sinus Node Syndrome weak sister weak sister weak sister weak sisters weak sisters Weak solution weak sore Weak Spectral Mapping Theorem weak spot weak spot Weak Stability Boundary Weak State Routing weak T Tauri star Weak topology Weak Translatability Weak typing Weak Velocity/Strong Position Weak Voice Weak Write Test Mode Weak-* topology weak-at-birth weak-eyed Weak-Form Efficiency Weak-Form Market Efficiency Weak-hearted weak-kneed weak-line T Tauri star weak-minded weak-minded weak-mindedness weak-mindedness Weak-Sense Hadamard Weak-side linebacker Weak-side linebacker weak-stemmed weak-strong duality weak-willed weaken weaken weaken in force weaken the resolution of weakened weakened Weakened bowel wall weakened-plane joint weakener weakener weakeners weakeners weakening weakening Weakening of a Currency Weakening of a Currency

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