Risk of beta: Evidence from Prospect Theory

According to Prospect Theory, Investors have different behaviors in theprofit and loss situations and indeed their trading behavior is different in bulland bear markets. This study uses quantile regression model (in differentquartiles) and OLS model to estimate beta of 180 firms. Results showed that...

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Main Authors: Ali Saghafi, Roohollah Farhadi, Mohammad Taghi Taghavi Fard
Format: Article
Language:fas
Published: Allameh Tabataba'i University Press 2015-03-01
Series:مطالعات تجربی حسابداری مالی
Subjects:
Online Access:https://qjma.atu.ac.ir/article_1719_ae80b9f1f877c24b305cc45cfe7a7bda.pdf
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author Ali Saghafi
Roohollah Farhadi
Mohammad Taghi Taghavi Fard
author_facet Ali Saghafi
Roohollah Farhadi
Mohammad Taghi Taghavi Fard
author_sort Ali Saghafi
collection DOAJ
description According to Prospect Theory, Investors have different behaviors in theprofit and loss situations and indeed their trading behavior is different in bulland bear markets. This study uses quantile regression model (in differentquartiles) and OLS model to estimate beta of 180 firms. Results showed thatfirst, equity total risk (standard deviation) increase in Upper quartile andsecond, stocks beta changes in different quartiles and by moving fromquartile 0.25 to quartile 0.75, systematic risk (beta) increases significantly.Linear regression model and Quantile regression model show also thatunexpected variance can explain excess return at least similar to expectedvariance. The results can also be interpreted with both Insight of standardfinance and insight of behavioral finance. In standard finance area, riskreturnpositive relation that exists in upper quintiles is consistent with longrun growth of economy. Moreover, negative relation between return and riskin lower quintiles imply more uncertainty and as a result causing stockreturns to fall. In behavioral finance area, regime-dependent behavior ofslope coefficients is consistent with prediction of Prospect theory ofinvestor’s behaviors around the reference point.
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spelling doaj.art-15114c0624ef4f5c96b51f37b464e97d2023-12-23T10:35:57ZfasAllameh Tabataba'i University Pressمطالعات تجربی حسابداری مالی2821-01662538-25192015-03-0112459381719Risk of beta: Evidence from Prospect TheoryAli Saghafi0Roohollah Farhadi1Mohammad Taghi Taghavi Fard2Professor, Allameh Tabataba’i University,PhD Student, Allameh Tabataba’i UniversityAssociate Professor, Allameh Tabataba’i UniversityAccording to Prospect Theory, Investors have different behaviors in theprofit and loss situations and indeed their trading behavior is different in bulland bear markets. This study uses quantile regression model (in differentquartiles) and OLS model to estimate beta of 180 firms. Results showed thatfirst, equity total risk (standard deviation) increase in Upper quartile andsecond, stocks beta changes in different quartiles and by moving fromquartile 0.25 to quartile 0.75, systematic risk (beta) increases significantly.Linear regression model and Quantile regression model show also thatunexpected variance can explain excess return at least similar to expectedvariance. The results can also be interpreted with both Insight of standardfinance and insight of behavioral finance. In standard finance area, riskreturnpositive relation that exists in upper quintiles is consistent with longrun growth of economy. Moreover, negative relation between return and riskin lower quintiles imply more uncertainty and as a result causing stockreturns to fall. In behavioral finance area, regime-dependent behavior ofslope coefficients is consistent with prediction of Prospect theory ofinvestor’s behaviors around the reference point.https://qjma.atu.ac.ir/article_1719_ae80b9f1f877c24b305cc45cfe7a7bda.pdfprospect theoryquantile regressionunexpected varianceexpected variancereference point
spellingShingle Ali Saghafi
Roohollah Farhadi
Mohammad Taghi Taghavi Fard
Risk of beta: Evidence from Prospect Theory
مطالعات تجربی حسابداری مالی
prospect theory
quantile regression
unexpected variance
expected variance
reference point
title Risk of beta: Evidence from Prospect Theory
title_full Risk of beta: Evidence from Prospect Theory
title_fullStr Risk of beta: Evidence from Prospect Theory
title_full_unstemmed Risk of beta: Evidence from Prospect Theory
title_short Risk of beta: Evidence from Prospect Theory
title_sort risk of beta evidence from prospect theory
topic prospect theory
quantile regression
unexpected variance
expected variance
reference point
url https://qjma.atu.ac.ir/article_1719_ae80b9f1f877c24b305cc45cfe7a7bda.pdf
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AT mohammadtaghitaghavifard riskofbetaevidencefromprospecttheory