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Aggregate Margin Debt and the Divergence of Price from Accounting Fundamentals

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  • Marcus Burger
  • Asher Curtis

Abstract

We examine whether, in the aggregate, margin debt is associated with the divergence of price from accounting fundamentals. We find that investors increase their margin debt following upward price movements away from accounting fundamentals, consistent with these investors being extrapolative in aggregate. We also find evidence that margin debt appears to be linked to temporary overpricing in recent periods, as the aggregate ratio of margin debt to price is reliably associated with negative future returns since at least 1992. Our results are consistent with the theoretical literature that predicts extrapolative traders have a destabilizing effect on market prices, and helps explain why prices diverge from accounting fundamentals.Les auteurs se demandent si, dans leur ensemble, les emprunts sur marge sont associés à la divergence entre les cours et les paramètres comptables fondamentaux. Ils constatent que les emprunts sur marge des investisseurs augmentent à la suite de mouvements à la hausse des cours par rapport aux paramètres comptables fondamentaux, ce qui confirme que, globalement, ces investisseurs se livrent à l'extrapolation. Les auteurs relèvent également des données démontrant que les emprunts sur marge semblent être en relation avec la surévaluation temporaire des cours dans les périodes récentes, le ratio agrégé des emprunts sur marge par rapport aux cours affichant un lien fiable avec les rendements négatifs ultérieurs depuis au moins 1992. Les résultats qu'obtiennent les auteurs confirment les écrits théoriques selon lesquels l'extrapolation à laquelle se livrent les négociateurs a une incidence déstabilisatrice sur les cours du marché et contribuent à expliquer pourquoi les cours divergent des paramètres comptables fondamentaux.

Suggested Citation

  • Marcus Burger & Asher Curtis, 2017. "Aggregate Margin Debt and the Divergence of Price from Accounting Fundamentals," Contemporary Accounting Research, John Wiley & Sons, vol. 34(3), pages 1418-1445, September.
  • Handle: RePEc:wly:coacre:v:34:y:2017:i:3:p:1418-1445
    DOI: 10.1111/1911-3846.12314
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    Cited by:

    1. Sami Keskek & James N. Myers & Linda A. Myers, 2020. "Investors' Misweighting of Firm‐Level Information and the Market's Expectations of Earnings," Contemporary Accounting Research, John Wiley & Sons, vol. 37(3), pages 1828-1853, September.
    2. Edward J. Riedl & Estelle Y. Sun & Guannan Wang, 2021. "Sentiment, Loss Firms, and Investor Expectations of Future Earnings," Contemporary Accounting Research, John Wiley & Sons, vol. 38(1), pages 518-544, March.

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