The Temporal Dimension of Risk

Mahmoud, Ola. (2017) The Temporal Dimension of Risk. The journal of risk, 19 (3). pp. 57-83.

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Official URL: https://edoc.unibas.ch/74253/

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Multi-period measures of risk account for the path that the value of an investment portfolio takes. In the context of probabilistic risk measures, the focus has traditionally been on the magnitude of investment loss, and not on the dimension associated with the passage of time. In this paper, the concept of a temporal path-dependent risk measure is mathematically formalized in order to capture the risk associated with the temporal dimension of a stochastic process, and its theoretical properties are analyzed. We then study the temporal dimension of investment drawdown (its duration), which measures the length of excursions below a running maximum. Its properties in the context of risk measures are analyzed both theoretically and empirically. In particular, we show that duration captures serial correlation in the returns of two major asset classes. We conclude by discussing the challenges of path-dependent temporal risk estimation in practice.
Faculties and Departments:06 Faculty of Business and Economics > Departement Wirtschaftswissenschaften > Professuren Wirtschaftswissenschaften > Corporate Finance (Mahmoud)
06 Faculty of Business and Economics > Departement Wirtschaftswissenschaften > Ehemalige Einheiten Wirtschaftswissenschaften > Corporate Finance (Mahmoud)
UniBasel Contributors:Mahmoud, Ola
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Incisive Media
Note:Publication type according to Uni Basel Research Database: Journal article
Last Modified:26 May 2020 10:18
Deposited On:26 May 2020 10:18

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