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Cointegration and Causality: An Application to Major Mango Markets in Pakistan
Abdul Ghafoor, Khalid Mustafa, Khalid Mushtaq and Abedullah
Published:Jan - June 2009
Mangoes are one of Pakistan’s most important fruits; the country is the world’s fourth largest producer and exporter of mangoes. Integrated markets are those where price signals are transferred from one to another, allowing physical arbitrage to adjust any disturbances in these markets; integrated markets are thus a sign of efficiency. From this viewpoint, we investigate domestic integration among ten major mango markets, i.e., Lahore, Faisalabad, Multan, Gujranwala, Sargodha, Karachi, Hyderabad, Sukkur, Peshawar, and Quetta employing Johansen’s cointegration approach and error correction model. Data on monthly wholesale prices data (PRs/100 kg) were obtained from the agricultural and livestock marketing advisor, Government of Pakistan. The results of the study confirm the presence of integration among major mango markets in Pakistan. These markets were able to adjust for 16 to 68% of disequilibrium in one month, implying that it takes almost two to six months to remove any disequilibrium and to move back to long-run equilibrium. The Granger causality test shows that the Karachi market has bidirectional causality with Lahore, Faisalabad, Multan, Hyderabad, and Sukkur, and a unidirectional relationship with the rest. An impulse response analysis was also conducted to check the stability of these markets given a standard error shock to the Karachi base market.
KEYWORDS:
Mangoes, cointegration, causality, Pakistan.
JEL:
C01,
A10.
An Empirical Investigation of the Causal Relationship among Monetary Variables and Equity Market Returns
Arshad Hasan and M. Tariq Javed
Published:Jan - June 2009
This study explores the long-term dynamic relationship between equity prices and monetary variables for the period June 1998 to June 2008. Monetary variables include money supply, treasury bill rates, foreign exchange rates, and the consumer price index. The data have been examined using multivariate cointegration analysis and Granger causality analysis. Johansen and Juselius’ multivariate cointegration analysis indicates the presence of a long-term dynamic relationship between the equity market and monetary variables. Unidirectional Granger causality is found between monetary variables and the equity market. In the case of money supply, a positive relationship supports the liquidity hypothesis. Impulse response analysis indicates that the interest rate shock has a negative impact on equity returns in the Pakistani equity market. Exchange rates also have a negative impact on equity returns in the short run. However inflation has little impact on returns in the equity market. Variance decomposition analysis suggests that the interest rate, exchange rate, and money supply shocks are a substantial source of volatility for equity returns. The contribution of a monetary shock to the equity returns ranges from 4% to 16% over different time lags. Similarly, the VECM also confirms the presence of a short-term relationship between monetary variables and equity returns. This state of affairs demands that monetary variables be considered an important factor in determining stock market movements. Policymakers should be more vigilant and careful in designing monetary policies as it has a direct impact on cash inflows into the capital market and on the stability of the capital market.
KEYWORDS:
Monetary variables, equity, causality, Pakistan.
JEL:
G12,
E31.
The Impact of Corporate Governance on the Cost of Equity: Empirical Evidence from Pakistani Listed Companies
Syed Zulfiqar Ali Shah and Safdar Ali Butt
Published:Jan - June 2009
This study examines the impact of the quality of corporate governance, as measured by a specially constructed corporate governance index, on the expected cost of equity calculated using the capital asset pricing model (CAPM) approach. A total of 114 listed companies were investigated to analyze the relationship between the two variables for the period 2003 to 2007. The quality of corporate governance was measured by assigning weights to a set of related variables, although these variables were also considered individually. We used descriptive statistics, a correlation matrix, a simple ordinary least squares (OLS) approach, and fixed effect model to test the panel data collected. We found a negative relationship between managerial ownership and board size with the cost of equity, and a positive relationship between board independence, audit committee independence, and corporate governance with the cost of equity. These results could be due to the transition phase through which Pakistani companies are passing after the promulgation of the Code of Corporate Governance in 2002.
KEYWORDS:
Corporate governance, cost of equity, Pakistan.
JEL:
G30,
G34.
Book Review: Banker to the Poor, The Story of Grameen Bank, Aurum Press Ltd, London, 1998, ISBN 978-1- 85410-924-8, pp 313
Nina Gera
Published:Jan - June 2009
Yunus, Muhammad with Alan Jolis, Banker to the Poor, The Story of Grameen Bank, Aurum Press Ltd, London, 1998, ISBN 978-1-85410-924-8, pp 313, Price: UK Pounds 8.99.
It is the firm conviction of Muhammad Yunus, winner of the Nobel Peace Prize, that poverty can be eradicated and put away in museums once and for all. As the author puts it, the bottom line of his belief system is that ‘poverty does not belong in a civilized human society. It belongs in museums’. This is what motivated this stalwart to establish the Grameen Bank in Bangladesh, the pioneer in the field of micro-finance for the poor. Today, Grameen Bank can boast that it provides 2.5 billion dollars of micro-loans to over two million rural poor in the country.
KEYWORDS:
Book review, Muhammad Yunus, Grameen Bank, microfinance, micro-finance.
JEL:
N/A.
Size and Value Premium in Karachi Stock Exchange
Nawazish Mirza and Saima Shahid
Published:July - Dec 2008
This study evaluates the ability of the Fama and French Three Factor model to explain a cross section of stock returns in the Karachi Stock Exchange (KSE). Following Fama and French factor approach, we sorted six portfolios by size and book to market. The sorted portfolios were constituted to represent stocks from each and every sector of KSE. Using Daily returns from January 2003 to December 2007, the excess returns for each portfolio were regressed on market, size and value factors. Our findings, in general, supported the notion of the three factor model. The three factor model was able to explain the variations in returns for most of the portfolios and the results remain robust when the sample was reduced to control for the size effect. Our findings are consistent with most of the studies that suggested the validity of the three factor model in emerging markets. These results warrant for the inclusion of size and value factors for valuation, capital budgeting and project appraisals, thus, having substantial implications for fund managers, analysts and investors.
KEYWORDS:
Size Premium, Value Premium, Market Premium, Three-Factor Model.
JEL:
G11,
G12,
G14.
An Investigation of the Effectiveness of Financial Development in Pakistan
Muhammad Tahir
Published:July - Dec 2008
This study attempts to discern the relationship between economic and financial development in Pakistan for the period 1973 - 2006. Vector error-correction modeling is used to identify the causality between economic and financial development and the exogeneity of the variable(s) in the model. These error correction terms have been derived from Johansen’s multivariate cointegrating procedure. Results indicate that, in the long run, economic development causes financial development. Furthermore, the real output variable is found to be exogenous. Thus, financial development is seen to be ineffective in terms of economic development determination in Pakistan.
KEYWORDS:
Economic Development, Financial Development, Causality.
JEL:
O16,
C59.
Causality between Energy Consumption and Economic Growth: The Case of Pakistan
Qazi Muhammad Adnan Hye and Sana Riaz
Published:July - Dec 2008
This study seeks to determine the direction of causality between energy consumption (EC) and economic growth (EG), using annual data from 1971 to 2007. In our empirical analysis, we implement a bounds-testing approach to co-integration and an augmented form of the Granger causality test to identify the direction of the relationship between these variables both in the short and long run. Our findings suggest bidirectional causality between EG and EC in the short run; in the long run we find unidirectional causality from EG to EC. EC does not lead to EG in the long run because higher energy prices (oil prices) increase the cost of business, leading to a negative effect on EG. Additionally, when energy prices fluctuate, they create uncertainty that also affects economic growth. The study recommends direct investment in local energy resources.
KEYWORDS:
Asset pricing, CAPM, financial literature, review.
JEL:
N/A.
Export-Led Growth Hypothesis in Pakistan: A Reinvestigation Using the Bounds Test
Saima Siddiqui, Sameena Zehra, Sadia Majeed, Muhammad Sabihuddin Butt
Published:July - Dec 2008
Trade is presumed to act as a catalyst to economic growth. This paper reinvestigates the export-led growth hypothesis in Pakistan by using annual time series data on exports, imports, terms of trade, and the labor force participation rate as explanatory variables and gross domestic product (GDP) as the dependent variable for the period 1971-2005. The study uses the more comprehensive and recent bounds test or autoregressive distributed lag model (ARDL) proposed by Pesaran et al (2001) to examine the existence of short-run and long-run relationships between exports and economic growth, which is crucial in designing policy to enhance trade-related potential in Pakistan. The results indicate that exports, labor force, and imports have a positive effect on growth, while the terms of trade has a negative effect. The proxy for trade liberalization has a positive impact on economic growth. Finally, the chief finding of this study is that the hypothesis of export-led growth in the Pakistan economy is supported in both the short and long run. Economic growth in Pakistan is accompanied by fluctuations in exports and imports both in the short and long run, but the labor force participation rate has a negative effect only in the short run. The terms of trade has the same effect in the short and long run.
KEYWORDS:
JEL:
C - Mathematical and Quantitative Methods,
F - International Economics.
Impact of Intellectual Capital Efficiency on Profitability (A Case Study of LSE25 Companies)
Muhammad Abdul Majid Makki, Suleman Aziz Lodhi
Published:July - Dec 2008
The aim of this study is to examine the relationship between intellectual capital efficiency and the firm's profitability. The importance of intellectual capital (IC) and the related philosophy of the knowledge economy have captured the attention of researchers and business enterprises in the World Trade Organization (WTO) era. IC is widely recognized as a tool that is critical to running a successful business in a highly competitive environment. Various models have been introduced to measure the numerous facets of IC, including the Skandia navigator, Tobin's Q, and value added intellectual coefficient (VAIC). This article examines the role of IC efficiency in the firm’s net profit using the VAIC developed by Ante Pulic (1998). It also investigates its correlation with the firm’s profitability, using regression models.
A five-year data set for Lahore Stock Exchange Index companies (LSE-25) was obtained from audited financial reports, and used to calculate human capital, structural capital, and capital-employed efficiency of companies in different industrial sectors. The results obtained using multiple regression analysis supports the argument that IC efficiency contributes significantly to the firm's profitability. Practically, IC efficiency can be used as a benchmark and strategic indicator to direct financial and intellectual resources in the right direction, i.e., to enhance the firm’s ultimate corporate value. It can also be developed as a management tool to create a sustainable comparative advantage in the competitive global knowledge economy. The study is a pioneering attempt to measure the impact of IC efficiency on net profit using cross sectional time series data.
KEYWORDS:
Knowledge Economy, Intellectual Capital, Value Added, VAIC, LSE-25.
JEL:
C22,
C59.
Published:July - Dec 2008
The available evidence in Pakistan suggests that inflation is a monetary phenomena. This paper examines the relationship between the determinants of inflation and its volatility by using monthly data for 1990:M1-2007:M5. The determinants of inflation are estimated by a VAR analysis, which shows that inflation, the interest rate and money supply move together. A VAR model assumes constant error variance. We relaxed this assumption by employing an ARCH/GARCH model and conclude that inflation is volatile in nature. For measuring the qualitative nature of the inflationary process we used an EGARCH model. It confirms that the time effect model is significant. It also suggests that in the first four months of the calendar year, the inflationary shock is negative and it can, therefore, hamper growth.
KEYWORDS:
Inflation, Volatility, Pakistan, Money Supply, Interest Rate.
JEL:
E31,
E51,
C01.