The effect of labor strikes on security analysts' forecast superiority and on the association between risk†adjusted stock returns and unexpected earnings*

Lawrence D. Brown and Mark E. Zmijewski

Contemporary Accounting Research, 1987, vol. 4, issue 1, 61-75

Abstract: Abstract. This paper empirically examines whether labor strikes affect the forecasting and information content of quarterly earnings numbers. We address two issues regarding financial analyst forecast (FAF) superiority: whether FAF superiority increases when a strike occurs and if so, whether the increase in FAF superiority is sustained immediately after the strike ends. We also examine two issues regarding information content: whether strikes affect the coefficient mapping unexpected earnings into stock prices and whether strikes affect the variance of stock price changes. We suggest that strikes affect both the forecasting and information content of quarterly earnings numbers. Résumé. Cet article examine de façon empirique si les grèves des travailleurs influencent la prévision et le contenu informatif des résultats trimestriels. Nous abordons deux questions relatives à la supériorité des prévisions d'analystes financiers (PAF): à savoir si la supériorité des PAF s'accroît lorsqu'une grève se produit et, dans l'affirmative, si l'accroissement de cette supériorité se maintient immédiatement après la fin de la grève. Nous étudions également deux questions relatives au contenu informatif: à savoir si les grèves influencent le coefficient incorporant l'impact des bénéfices imprévus sur le cours des actions et si les grèves affectent la variance des fluctuations du cours des actions. Les grèves affecteraient donc à la fois la prévision et le contenu informatif des résultats trimestriels.

Date: 1987
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https://doi.org/10.1111/j.1911-3846.1987.tb00655.x

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Persistent link: https://EconPapers.repec.org/RePEc:wly:coacre:v:4:y:1987:i:1:p:61-75

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