Isaac Obwocha (MSc, Actuarial Science) BSc(Actuarial Science), 2020 University of Nairobi, is from Nairobi, Kenya. His undergraduate project focused on volatility measures at the Nairobi Securities Exchange (NSE) and the postgraduate project focused on using stochastic dominance approaches to outperform other investors at the NSE. He is interested in continuing to study methods to ensure efficiency at the NSE and approaches employed by investors in this market to outperform their colleagues under various conditions. He hopes to pursue a doctorate degree in Actuarial Science and eventually teach at the college level.
Testing Stochastic Dominance of Manufacturing Stocks at the NSE Market
Stochastic dominance relationships between two or more variables is crucial in the ﬁeld of actuarial science, econometrics and in studying reliability. This project applies Stochastic Dominance (SD) portfolio optimization methods to test the stocks that would do better during Kenyan electioneering periods. More and more scholars have shifted their attention to studying stochastic dominance relationships in decision theory. Some evidences presented by scholars in the area for many years have revealed that the methodology dominates many other solutions. Many methodologies assume contemporaneous as well as serial independence (assumption of no independence between samples and within a sample) which cannot be met by most observations in application since ﬁnancial data features time series properties and positive correlation among observations from various samples. SD uses a distribution-free assumption framework which makes it suitable in checking dominance relationships between agricultural and manufacturing stocks. Besides, the SD relationships are based on empirical distribution differences. The methodology requires non-parametric statistical estimation as well as inference methods. SD is quite appealing to asset classes as well as investment strategies that exhibit asymmetric risk proﬁles. For example, small cap stocks and momentum strategies where variance would not adequately measure investment risk since it makes no distinction between bad risk and good risk. The assumptions of no arbitrage and tendency of investors to dislike risk are largely supported by capital market equilibrium models. The project focuses on ﬁrst degree SD, second degree SD and third-degree SD tests to check for the stocks that would dominate the other in the two sectors of the economy during hard economic times brought about by electioneering periods.