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A Counterfactual Valuation of the Stock Index as a Predictor of Crashes

Tom Roberts

Staff Working Papers from Bank of Canada

Abstract: Stock market fundamentals would not seem to meaningfully predict returns over a shorter-term horizon—instead, I shift focus to severe downside risk (i.e., crashes). I use the cointegrating relationship between the log S&P Composite Index and log earnings over 1871 to 2015, combined with smoothed earnings, to first construct a counterfactual valuation benchmark. The price-versus-benchmark residual shows an improved, and economically meaningful, logit estimation of the likelihood of a crash over alternatives such as the dividend yield and price momentum. Rolling out-of-sample estimates highlight the challenges in this task. Nevertheless, the overall results support the common popular belief that a higher stock market valuation in relation to fundamentals entails a higher risk of a crash.

Keywords: Asset Pricing; Financial stability (search for similar items in EconPapers)
JEL-codes: C50 C58 G0 G01 G12 G17 G19 (search for similar items in EconPapers)
New Economics Papers: this item is included in nep-fmk and nep-rmg
Date: 2017
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Persistent link: https://EconPapers.repec.org/RePEc:bca:bocawp:17-38

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