The changing sensitivity of realized portfolio betas to U.S. output growth: An analysis based on real-time data

Renatas Kizys () and Christian Pierdzioch

Journal of Economics and Business, 2011, vol. 63, issue 3, 168-186

Abstract: Our results shed light on the sensitivity of the betas of portfolios formed on market capitalization ("size") and book-to-market value ("value") to output growth in the United States. We estimate a state-space model to analyze the sensitivity of portfolio betas to output growth. We measure output growth using real-time and revised data. Output growth has a significant effect on portfolio betas when size and value are high. Such portfolio betas exhibit countercyclical dynamics. They are more sensitive, in absolute terms, to output growth when the latter is measured using real-time data. Their sensitivity to output growth has grown over time. Portfolio betas with respect to output growth have become smaller over time, in contrast, when size is large but value is low.

Keywords: State-space; model; Output; growth; Realized; portfolio; betas; Real-time; data; Great; Moderation; United; States (search for similar items in EconPapers)
Date: 2011
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Persistent link: https://EconPapers.repec.org/RePEc:eee:jebusi:v:63:y:2011:i:3:p:168-186

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