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Analysis of equity and interest rate returns in South Africa under the context of jump diffusion processes
Includes bibliographical references
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| Main Author: | |
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| Format: | Thesis |
| Language: | English |
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Division of Actuarial Science
2016
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| _version_ | 1867613334624272384 |
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| access_status_str | Open Access |
| author | Mongwe, Wilson Tsakane |
| author_browse | Mongwe, Wilson Tsakane |
| author_facet | Mongwe, Wilson Tsakane |
| author_sort | Mongwe, Wilson Tsakane |
| collection | Thesis |
| description | Includes bibliographical references |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/16600 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:34:28.941Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2016 |
| publishDateRange | 2016 |
| publishDateSort | 2016 |
| publisher | Division of Actuarial Science |
| publisherStr | Division of Actuarial Science |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/16600 Analysis of equity and interest rate returns in South Africa under the context of jump diffusion processes Mongwe, Wilson Tsakane Mathematical Finance Actuarial Science Includes bibliographical references Over the last few decades, there has been vast interest in the modelling of asset returns using jump diffusion processes. This was in part as a result of the realisation that the standard diffusion processes, which do not allow for jumps, were not able to capture the stylized facts that return distributions are leptokurtic and have heavy tails. Although jump diffusion models have been identified as being useful to capture these stylized facts, there has not been consensus as to how these jump diffusion models should be calibrated. This dissertation tackles this calibration issue by considering the basic jump diffusion model of Merton (197G) applied to South African equity and interest rate market data. As there is little access to frequently updated volatility surfaces and option price data in South Africa, the calibration methods that are used in this dissertation are those that require historical returns data only. The methods used are the standard Maximum Likelihood Estimation (MLE) approach, the likelihood profiling method of Honore (1998), the Method of Moments Estimation (MME) technique and the Expectation Maximisation (EM) algorithm. The calibration methods are applied to both simulated and empirical returns data. The simulation and empirical studies show that the standard MLE approach sometimes produces estimators which are not reliable as they are biased and have wide confidence intervals. This is because the likelihood function required for the implementation of the MLE method is not bounded. In the simulation studies, the MME approach produces results which do not make statistical sense, such as negative variances, and is thus not used in the empirical analysis. The best method for calibrating the jump diffusion model to the empirical data is chosen by comparing the width of the bootstrap confidence intervals of the estimators produced by the methods. The empirical analysis indicates that the best method for calibrating equity returns is the EM approach and the best method for calibrating interest rate returns is the likelihood profiling method of Honore (1998). 2016-01-29T11:00:17Z 2016-01-29T11:00:17Z 2015 Master Thesis Masters MPhil http://hdl.handle.net/11427/16600 eng application/pdf Division of Actuarial Science Faculty of Commerce University of Cape Town |
| spellingShingle | Mathematical Finance Actuarial Science Mongwe, Wilson Tsakane Analysis of equity and interest rate returns in South Africa under the context of jump diffusion processes |
| thesis_degree_str | Master's |
| title | Analysis of equity and interest rate returns in South Africa under the context of jump diffusion processes |
| title_full | Analysis of equity and interest rate returns in South Africa under the context of jump diffusion processes |
| title_fullStr | Analysis of equity and interest rate returns in South Africa under the context of jump diffusion processes |
| title_full_unstemmed | Analysis of equity and interest rate returns in South Africa under the context of jump diffusion processes |
| title_short | Analysis of equity and interest rate returns in South Africa under the context of jump diffusion processes |
| title_sort | analysis of equity and interest rate returns in south africa under the context of jump diffusion processes |
| topic | Mathematical Finance Actuarial Science |
| url | http://hdl.handle.net/11427/16600 |
| work_keys_str_mv | AT mongwewilsontsakane analysisofequityandinterestratereturnsinsouthafricaunderthecontextofjumpdiffusionprocesses |