Semistrong-form efficiency

Definition:

A form of pricing efficiency that profits the price of a security fully reflects all public information (including, but not limited to, historical price and trading patterns). Compare weak-form efficiency and strong-form efficiency.

Investing Essentials


Copyright © 2011 Campbell R. Harvey, Professor of Finance, Fuqua School of Business at Duke University

Term of the Day

Discounting the news

An adjustment of a stock's price as speculators bid the price up or down in anticipation of news about the company, whether good or bad.

Subscribe to the Term of the Day via email Get the Term of the Day in your inbox!


Create your free portfolio