Main Page | See live article | Alphabetical index A lead-lag effect, especially in economics, describes the situation where one (leading) variable is correlated with the values of another (lagging) variable at later times. For example, economists have found that in some circumstances there is a lead-lag effect between large-capitalization and small-capitalization stock-portfolio prices (Lo and MacKinlay, 1990). References Andrew W. Lo and A. Craig MacKinlay, "When are contrarian profits due to stock market overreaction," Review of Financial Studies 3 (2), 175-205 (1990). This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.