Robert Powell

Prof. Robert Powell

orcid

Research Focus & Metrics

Academic Career Length

31Years (1996-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

View All Publications
27 April 2023 in Accounting & Finance
Verified
Journal Article
Open access
RPRobert Powell
Robert Powell
ADAnh Do
Anh Do
Denise GengatharenDenise Gengatharen
Denise Gengatharen
JYJaime Yong
Jaime Yong
RGRasiah Gengatharen
Rasiah Gengatharen
Buy‐now‐pay‐later (BNPL) in Australia is a rapidly growing payment innovation. Regulators and consumer groups have expressed concerns at the financial risks posed by BNPL. As BNPL is not regulated under consumer credit law, financial regulator and consumer groups have recommended that BNPL users adopt a range of responsible financial behaviours for their financial wellbeing. This study, using a survey of BNPL users and structural equation modelling, shows a link between most of these recommended financially responsible behaviours and financial wellbeing and that the financial behaviours of younger users (aged under 25) place them at greater risk of reduced financial wellbeing.

1 January 1996 in Journal of Biotechnology
Verified
Journal Article
Closed access
DHDavid M. Hone
David M. Hone
SWShaoguang Wu
Shaoguang Wu
RPRobert Powell
Robert Powell
DPDavid W. Pascual
David W. Pascual
JCJohn Van Cott
John Van Cott
GLGeorge Lewis
George Lewis

1 December 2021 in Pacific-Basin Finance Journal
Verified
Journal Article
Closed access
TPThach Pham
Thach Pham
RPRobert Powell
Robert Powell
Deepa BannigidadmathDeepa Bannigidadmath
Deepa Bannigidadmath

1 May 2012 in Applied Economics Letters
Verified
Journal Article
Closed access
David AllenDavid Allen
David Allen
RPRobert Powell
Robert Powell
ASAbhay Kumar Singh
Abhay Kumar Singh
Using a comprehensive range of metrics, this article determines how relative market and credit risk change among European sectors during extreme market fluctuations. Differences are found between conditional and nonconditional outcomes, and sectors which were most risky prior to the Global Financial Crisis (GFC) are found to be different to the riskiest sectors during the GFC. These findings are consistent across the metrics used. The insights into extreme sectoral risk are important to investors in portfolio selection and to banks in setting sectoral concentration limits.

1 January 2012 in Australasian Accounting, Business and Finance Journal
Verified
Journal Article
Open access
PDF file
YCYun Hsing Cheung
Yun Hsing Cheung
RPRobert Powell
Robert Powell
The three main Value at Risk (VaR) methodologies are historical, parametric and Monte Carlo Simulation. Cheung & Powell (2012), using a step-by-step teaching study, showed how a nonparametric historical VaR model could be constructed using Excel, thus benefitting teachers and researchers by providing them with a readily useable teaching study and an inexpensive and flexible VaR modelling option. This article extends that work by demonstrating how parametric and Monte Carlo Simulation VaR models can also be constructed in Excel, thus providing a total Excel modelling package encompassing all three VaR methods.

Verified
Journal Article
Open access
PDF file
David AllenDavid Allen
David Allen
Michael McAleerMichael McAleer
Michael McAleer
RPRobert Powell
Robert Powell
ASAbhay K. Singh
Abhay K. Singh
This paper features an analysis of the effectiveness of a range of portfolio diversification strategies, with a focus on down-side risk metrics, as a portfolio diversification strategy in a European market context. We apply these measures to a set of daily arithmetically-compounded returns, in U.S. dollar terms, on a set of ten market indices representing the major European markets for a nine-year period from the beginning of 2005 to the end of 2013. The sample period, which incorporates the periods of both the Global Financial Crisis (GFC) and the subsequent European Debt Crisis (EDC), is a challenging one for the application of portfolio investment strategies. The analysis is undertaken via the examination of multiple investment strategies and a variety of hold-out periods and backtests. We commence by using four two-year estimation periods and a subsequent one-year investment hold out period, to analyse a naive 1/N diversification strategy and to contrast its effectiveness with Markowitz mean variance analysis with positive weights. Markowitz optimisation is then compared to various down-side investment optimisation strategies. We begin by comparing Markowitz with CVaR, and then proceed to evaluate the relative effectiveness of Markowitz with various draw-down strategies, utilising a series of backtests. Our results suggest that none of the more sophisticated optimisation strategies appear to dominate naive diversification.