Early Results on Depth of the Nascent Kenyan Derivative Market

Despite their importance in hedging against risk and reducing price uncertainty, derivative markets remain undeveloped or absent in many African countries. This paper describes market depth using key trends observed in the Kenyan derivatives market for the first 30 weeks of trading using mixed methods. Market depth was measured by the number of open interests of 142 trading days (30 weeks. The market was described using trend analysis, tests of means, and thematic analysis. The results revealed a market highly dominated by one company's single stock futures (Safaricom Plc), whose overall trade was 68% of the 6179 open contracts. Further, the market has strong weekly swings fluctuating from no trade to a high of 326 and a weekly average of 206 contracts. The market segment of single stock futures is significantly deeper than that of equity index futures. The qualitative study attributed the results to limited knowledge on derivatives amongst investors, unclear market policies, few derivatives products, and skepticism associated with developing financial markets. The Nairobi Securities Exchange (NSE) is advised to intensify investor education, introduce market makers, add new derivatives products, and transform the Nairobi Securities Exchange Clearing House into a full Central Counterparty (CCP) structure to accelerate market depth. This will create a pathway to market depth through efficiency and reduction of operational risks.

Noise Trading and Single Stock Futures: Modifying Sentana & Wadhwani’s Model

Derivatives,and their influence on the dynamics of underlying stock markets,is an interesting topic of debate, which predates their introduction. The unresolved influence of derivatives on their underlying stock markets still intrigues many. In this regard, researchers/stake holders are still curious about the (de)stabilizing influence of derivatives on the overall market. In disposition of these observations, two contradicting hypothesis have been studied widely and have remained the focus of attention in several theoretical and empirical studies. These hypotheses are explained in several ways. Among many, one explanation refers to the destabilizing influence of derivatives,due to the enhanced involvement of noise traders, after the introduction of derivatives.This aspect remains the topic of discussion for this study. After the formal introduction of the SSFs (Single Stock Futures) in Pakistan, this topic became a cause of concern for the stakeholders of this market as well. Hence, this study attempts to tap into this aspect of the de(stabilization) debate,by proposing a modified version of the famous Sentana & Wadhwani (1982)model. In order to tap the potential shortcomings of the S&W model, this study contributes to the extant literature in several ways: 1) It adds the feature of trading volume in the model to analyze and study the potential movement of noise traders from spot to futures market,due to the ease of trading that the futures markets offer, 2) the new, modified model adds a lagged term for returns in order to tap the potential asynchronous inefficiencies, 3) it considers the Generalized Error Distribution (GED) instead of the Gaussian Distribution, in order to realize the fact that returns are not normally distributed. Generally speaking, the modified version of the model not only extends the original model in terms of its explanation, but also empirically tests this aspect in the Single Stock Futures (SSFs) market of Pakistan. This model tested whether SSFs promote,or inhibit the noise trading post-SSFs. After putting it to test, the newer model did not report any negative or positive impact of the introduction of SSFs on the underlying stocks. This may conclude that the proclaimed (de)stabilizing role of the SSFs,in the context of Pakistan,is not justified.

Derivative trading and structural breaks in volatility in India: an ICSS approach

Researchers argue that ignoring the structural breaks in the time-series variance can cause significant upward biases in the degree of persistence in estimated GARCH models. Against this backdrop, the present study empirically examines the effect of stock futures on the underlying stock’s volatility in India by incorporating the structural breaks with the help of ICSS test and AR (1)-GARCH (1, 1) model for 30 most liquid and actively traded underlying stocks and their associated futures contracts. The study period ranges from the 1st January 2000 or the listing date of the particular stock (whichever is prior) till 31st March 2019. The study contributes to the on-going debate regarding the effect of derivatives on the underlying stock market’s volatility in two ways. Firstly, by taking into consideration the breaks in the volatility and, secondly, studying the effect of single stock futures will allow us to evaluate company-specific response to futures trading directly. The study offers a mixed outcome for the stocks under consideration. However, there is evidence of a decline in unconditional volatility for the majority of the stocks. The overall findings indicate that trading in stock futures may not have any detrimental effect on the underlying stock’s volatility.