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Browsing Research Articles (Actuarial Science) by Issue Date
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Du Plessis, Hendrik Lourens Marthinus
(Cambridge University Press, 2011-08-31)
This paper analyses the driving forces behind the willingness of South African courts to hear
actuarial expert testimony in even the most simple of cases, in contrast to the more circumspect
approach of the English courts, ...
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Smith, M.L. (Mattie); Beyers, Frederik Johannes Conradie; De Villiers, Johan Pieter
(Actuarial Society of South Africa, 2016)
No analytic procedures currently exist for determining optimal artificial neural network structures and
parameters for any given application. Traditionally, when artificial neural networks have been applied
to financial ...
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Flint, Emlyn James; Mare, Eben
(Actuarial Society of South Africa, 2017)
In this research we describe how forward-looking information on the statistical properties of an asset
can be extracted directly from options market data and demonstrate how this can be practically applied
to portfolio ...
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Uys, Andre; Bernitz, Herman; Pretorius, Samantha; Steyn, M.
(Springer, 2018-09)
Third molar development of 705 White and 563 Black South African individuals aged between 15 and 25 years was assessed from panoramic radiographs obtained from the School of Dentistry, University of Pretoria, South Africa. ...
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Van Appel, Vaughan; Mare, Eben
(Operations Research Society of South Africa, 2018-11-04)
Recently, Ross derived a theorem, namely the “Recovery Theorem”, that allows for the recovery of the pricing kernel and real-world asset distribution, under particular assumptions, from a forward-looking risk neutral ...
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Walters, Nadine Mari; Van Zyl, A.J. (Gusti); Beyers, Frederik Johannes Conradie
(World Scientific Publishing, 2019-03)
We consider the fraction of nodes that default in large, stochastic, inhomogeneous financial networks following an initial shock to the system. Results for deterministic sequences of networks are generalized to stochastic ...
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Smart, Hiske; AlGhareeb, Ahmed Mohamed; Smart, Sally-Anne
(Lippincott, Williams and Wilkins, 2019-07)
BACKGROUND : The Kingdom of Bahrain has a high incidence of diabetes and associated foot complications. Simultaneously, low 25-hydroxyvitamin D (25[OH]D) levels are common in this population and may be associated with the ...
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Uys, Andre; Bernitz, Herman; Pretorius, Samantha; Steyn, M.
(Springer, 2019-11)
Age estimation in living individuals around the age of 18 years remains a difficult challenge. In this study, the anterior inferior vertebral ring apophysis development of cervical vertebrae C2, C3, and C4 of 496 white and ...
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Van Appel, Vaughan; Mare, Eben
(South African Statistical Association, 2020)
The forward-looking nature of option prices provides an appealing way to extract risk measures. In this paper, we extract forecast densities from option prices that can be used in forecasting risk measures. More specifically, ...
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Venter, Pierre Johan; Mare, Eben; Pindza, Edson
(Cogent OA, 2020)
In this paper, two univariate generalised autoregressive conditional heteroskedasticity (GARCH) option pricing models are applied to Bitcoin and the
Cryptocurrency Index (CRIX). The first model is symmetric and the other ...
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Beyers, Conrad F.J.; De Freitas, Allan; Essel-Mensah, Kojo Amonkwandoh; Seymore, Reyno; Tsomocos, Dimitrios P.
(Springer, 2020-06)
In this article a banking sector Computable general equilibrium (CGE) model for South Africa is developed. The model is used to estimate the potential effect of regulatory policy on the economy and as a risk assessment ...
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Taljaard, Byran Hugo; Mare, Eben
(Routledge, 2021)
It is widely noted that market capitalisation weighted portfolios are inefficient and underperform an equal weighted portfolio over the long-term. However, at least since 2016, an equal weighted portfolio of stocks in the ...
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Guambe, Calisto; Kufakunesu, Rodwell; Van Zyl, A.J. (Gusti); Beyers, Conrad F.J.
(Taylor and Francis, 2021)
We study an asset allocation stochastic problem for a defined-contribution pension plan during the accumulation phase. We consider a financial market composed of a risk-free asset, an inflation-linked bond and the risky ...
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Taljaard, Byran Hugo; Mare, Eben
(NISC Pty (Ltd) and Informa Limited (trading as Taylor and Francis Group), 2021)
This paper considers the recent underperformance of the equal weighted portfolio of South African Top 40 stocks relative to the market capitalisation weighted portfolio. It highlights the impact of the increased concentration ...
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Venter, Pierre Johan; Mare, Eben
(MDPI, 2021-06-10)
In this paper, the Heston–Nandi futures option pricing model is applied to Bitcoin futures
options. The model prices are compared to market prices to give an indication of the pricing
performance. In addition, a multivariate ...
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Botha, Arno; Beyers, Conrad F.J.; De Villiers, Johan Pieter
(Elsevier, 2021-09)
A novel procedure is presented for the objective comparison and evaluation of a bank’s decision rules in optimising the timing of loan recovery. This procedure is based on finding a delinquency threshold at which the ...
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Rusconi, Rob
(Juta Law, 2021-11-30)
The rationale for the regulation of participants in financial markets, like retirement funds, is
sound. It would be strengthened, however, by a clear statement of the objectives of such
regulation. In this article the ...
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Levendis, Alexis Jacques; Mare, Eben
(Actuarial Society of South Africa, 2022)
It is well known that interest rate risk is a dominating factor when pricing long-dated contingent claims.
The Heston stochastic volatility model fails to capture this risk as the model assumes a constant interest
rate ...
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Venter, Pierre J.; Levendis, Alexis Jacques; Mare, Eben
(Taylor and Francis, 2022)
In this paper, the generalised autoregressive heteroskedasticity (GARCH)
model is applied to the pricing of collateralised options in the South African equity
market. Symmetric GARCH and nonlinear asymmetric GARCH (AGARCH) ...
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Beyers, Frederik Johannes Conradie; De Freitas, Allan; Essel-Mensah, Kojo Amonkwandoh; Seymore, Reyno; Tsomocos, Dimitrios P.
(Wiley, 2022-03)
A computable general equilibrium (CGE) model is used as a regulatory tool for the banking sector in South Africa. The model is used to determine the effects of regulatory penalties, capital adequacy requirements (CAR) and ...