Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 40 for “"Portfolio Construction"”.
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Long term portfolio construction
… with a long investment horizon to invest in portfolios comprised more of equities. This advice is usually coupled with the practice of shifting the investor's portfolio from risky asset holdings towards bonds and cash as the investor's target date gets closer. This view rests on the notion …
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Robust portfolio construction using sorting signatures
… and unstable nature of the resultant portfolios from the optimisation. These disappointing results have been linked to the presence of estimation error in the estimates of the expected returns and covariances which serve as input to the optimisation. Several attempts have been made to …
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Portfolio construction using index regression models
… investigate the impact of the models on portfolio creation over an extensive data set. Next we extend these models by modelling the regression residuals as ARMA and GARCH(l, 1) processes and investigate the effect on the resulting portfolios. We then introduce the topic of bounded …
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Optimized FTR portfolio construction: the speculator's problem
… an optimized financial transmission rights (FTR) portfolio for the speculator, who purchases FTR holdings in order to have returns that are as good as possible. The conventional approach of selecting the FTR in a portfolio requires the exhaustive evaluation of all the possible FTR combinations, …
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Essays in empirical asset pricing and portfolio construction
… and how it relates to asset pricing and portfolio construction. Chapter 1, co-authored with Oliver Linton, tests for predictability in asset pricing model residuals to check model specification. We estimate three consumption-based asset pricing models and derive ex-ante expected stock …
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Robust portfolio construction controlling the alpha-weight angle
… to have a significant impact on mean-variance portfolios and is one of the major reasons the standard Markowitz theory has been criticized in practice. While several attempts to incorporate estimation risk has been considered in the past, the approach by of Golts and Jones (2009) represents an …
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Optimal Portfolio Construction for Oil-Based Sovereign Wealth Funds
… the mean-variance model, aiming to enhance portfolio construction in sovereign wealth funds. Chapter 2 of the dissertation conducts a comparative analysis between portfolios constructed using the subset-optimization algorithm and a benchmark portfolio that does not employ the algorithm. The …
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Portfolio construction in South Africa with regard to the exchange rate
In South Africa the exchange rate receives a large amount of attention, due to its volatility and its perceived effect on share returns. This dissertation examines the international literature regarding exchange rate exposure and replicates their methods in a South African context to determine the …
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Robust portfolio construction: using resampled efficiency in combination with covariance shrinkage
The thesis considers the general area of robust portfolio construction. In particular the thesis considers two techniques in this area that aim to improve portfolio construction, and consequently portfolio performance. The first technique focusses on estimation error in the sample covariance (one …
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Optimized FTR portfolio construction for market participants in a multi-period horizon
… and sink nodes. In this thesis, we extend the construction of an optimized FTR portfolio for a single period to more general settings. We propose a methodology to construct an optimized FTR portfolio for a market participant in a multi-period problem horizon and we carefully study the impacts …
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The investigation of style indices and active portfolio construction on the JSE
This thesis investigates the construction and performance of style indices on the JSE. It then demonstrates how a 'toolkit' of style indices can be used, together with conventional passive indices, as a set of building blocks for efficient portfolio construction. This study tests the performance of …
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Fixed income portfolio construction: a Bayesian approach for the allocation of risk factors
Active portfolio management is driven by the trade-off between the expected return and the associated risks. In light of the most recent extensions of Black-Litterman model, we stick to a Bayesian approach for the construction of active fixed income portfolios. Within the investment grade universe, …
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Modelling of volatility of stock prices using GARCH models & its importance in portfolio construction
… investigate the importance of GARCH modelling in portfolio construction using Improved Sharpe Single Index Models. The data used for model estimation has been randomly selected from different sectors of the South African economy. GARCH models are estimated and validated for the data series of the …
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The construction of optimal socially responsible investment portfolios in South Africa using traditional and artificial intelligence techniques
… scholars and practitioners have sought optimal portfolio construction methods. Traditional approaches, like mean-variance, face challenges with complex non-linear and non-convex models. Recently, meta-heuristic artificial intelligence (AI) algorithms have enhanced portfolio construction by …
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Portfolio optimisation with quantitative and qualitative views
Portfolio construction with quantitative and qualitative forecasts is described through the exposition of two asset allocation models. The two models arc the Black-Litterman Asset Allocation moodel and the Qualitative Forecasts : Model developed by Herold Ulf. The models are developed theoretically …
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Robust beta estimation and applications
Modern portfolio theory was developed by Harry Markowitz more than forty years ago and is now considered to be an indispensable tool in portfolio construction. Sharpe introduced the index models as a simplification of the original Markowitz formulation, as this required fewer parameters to be …
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An investigation into reference-day risk-free metrics in the context of modern portfolio theory on the JSE
Modern portfolio theory (MPT), asset pricing models and broader financial modelling are dependent upon the accuracy of input parameters. For example, the accuracy of expected returns, standard deviations and correlations as an input into MPT will result in a more efficient selection of the optimal …
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An investigation into the style and asset class adjusted performance of South African multi-asset funds
… unit trusts in a suitable manner, to this end portfolio construction tools are utilised to meet illustrative client objectives in a multi-asset context. Methodology: This study uses monthly total return time series for several investable style and asset class indices as well as South African …
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The Impact of Fiscal and Monetary Policy on the Cross-Sectional Value Factor
… value factors formed on the intersection of five portfolio construction design choices, which I take to represent the concept of the "value" premium in aggregate, I find that both structural and revaluation returns to the factor are lower than average during periods when fiscal and monetary policy …
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