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An active asset management strategy that tactically overweighted and underweighted certain sectors, depending on expected performance. Sometimes called sector rotation.
Copyright © 2012, Campbell R. Harvey. All Rights Reserved.

Sector Rotation

An investment strategy in which a portfolio overweights or underweights certain sectors in accordance with expected performance. Sector rotation is a form of active investment management; the portfolio manager observes market trends and alters the composition of the portfolio in order to earn the highest possible return. Sector rotation is fairly high risk, as a portfolio's systematic overweighting and underweighting means that is not efficiently diversified. See also: Markowitz portfolio theory.
Farlex Financial Dictionary. © 2012 Farlex, Inc. All Rights Reserved
References in periodicals archive ?
In his study, McGlone turned this phenomenon on its head to see if there is an opposite effect to stereotype threat: If you could get women to think about their demonstrated strengths rather than their stereotypical differences, would their performance on spatial rotation tasks improve?
Males Tests in the first M SD N battery Vocabulary (PMA) 28.6 7.2 4,136 Verbal Fluency (PMA) 48.02 11.76 4,132 Spatial Rotation (PMA) 30.92 11.56 4,134 Inductive Reasoning (PMA) 19.05 4.92 4,131 Monedas 25.54 6.65 4,086 Females Tests in the first M SD N d battery Vocabulary (PMA) 27.5 6.9 2,743 0.15 Verbal Fluency (PMA) 49.82 11.55 2,739 -0.15 Spatial Rotation (PMA) 26.32 11.47 2,740 0.4 Inductive Reasoning (PMA) 19.56 4.75 2,742 -0.10 Monedas 20.45 6.67 2,716 0.76 Table 2.
[[omega].sup.0.sub.i](i = 1, 2, 3) are the generators of boosts, [[omega].sup.i.sub.j](i, j = 1, 2, 3; i [not equal to] j) are the generators of spatial rotations ([[omega].sup.0.sub.1] = -[[omega].sup.1.sub.0] and [[omega].sup.1.sub.2] = -[[omega].sup.2.sub.1]), and [e.sup.a]/l (a = 0, 1, 2, 3) are the generators of translations.
In order to calculate the forearm postures, Euler angles [29] are utilized to parameterize the forearm spatial rotations in the 3D work space.
Because spatial large rotations are physically nonadditive, an improper discretization of spatial rotations may lead to nonobjectivity of strain measures [1].

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