Lockup Agreements and Survival of UK IPOs

This paper examines the role of lockup agreements on the survival of 580 UK Initial Public Offerings (IPOs) during the period of 1990–2011. Our accelerated failure time (AFT) survival model shows a statistically and economically significant effect of lockup length on the post‐IPO survival. A 12 month increase in median lockup period increases the (median) survival time by 27%. Furthermore, the failure rates for IPOs with longer lockups are consistently lower than the failure rates for IPOs with shorter lockups regardless of delisting reasons. The results are robust to choice of different survival estimation models, heterogeneity, clustering, and alternative specification of variables. Our results highlight the importance of lockup characteristics on the subsequent survival of newly listed firms and inform recent debate regarding alleged short‐termism in the UK equity market.     

The exchange value of the dollar and the U.S. trade balance: An empirical investigation based on cointegradon and Granger causality tests

This article performs tests of Granger causality in the relationships between the nominal ad real exchange rates of the dollar and the U.S. trade balance as well as its price and quantity components over the period 1973:IIQ–1989:IIIQ. Our results suggest: (i) weak statistical evidence of unidirectional causality running from the nominal exchange rate to import prices and nominal trade balance (ii) no statistical support for the proposition that the real exchange rate simply “accommodates” changes in the real trade balance, and (iii) strong (no) causal links between the nominal and real exchange rates and export (import) volume. We tentatively conclude that movements in the exchange rate have a rather limited effect on the trade balance and that this effect is more likely to materialize on the export side of the trade balance.     

Banking deregulation and allocative efficiency in Pakistan

This article examines the impact of deregulation policies on allocative efficiency of banks in Pakistan. It investigates whether deregulation has impacted the pattern of allocative efficiency of banks and explores which bank ownership segment has been more responsive. It uses data from 1991 to 2005 and explicitly models allocative inefficiency by using the translog shadow cost-share system. Empirical results show that overregulation and imperfect market structure hampers the ability of banks to make competitive decisions. We find evidence of allocative inefficiency leading to over-utilization of labour and deposits vis-à-vis operating cost. Empirical results for time-varying allocative efficiency show declining levels of allocative inefficiency for state-owned and private banks in post-reform period. Deregulation policies induce state-owned banks to decrease over-utilization of labour relative to deposits and operating cost while private banks succeed in using operating cost closer to optimal levels. Hence, policymakers have latitude to introduce more reforms without jeopardizing allocative efficiency.     

Causality Between Exports and Economic Growth: What do the Econometric Studies Tell Us?

This paper contains an assessment of major econometric studies that have estimated the causality between exports and economic growth. These studies have used a variety of methodological approaches, such as Granger causality, cointegration with multivariate error correction models, exogeneity and structural invariance, VAR models with variance decomposition, and impulse response functions. The assessment in this paper refers both to the methodologies employed as well as to the empirical findings. A major conclusion is that empirical support for the export‐led growth in both the developed and the developing countries is considerably weaker than was estimated on the basis of earlier correlation and production function studies.     

Time-Varying Spillover and the Portfolio Diversification Implications of Clean Energy Equity with Commodities and Financial Assets

This article examines the time-varying spillover and its implications on hedging and portfolio diversification for clean energy equities (WilderHill New Energy Global Innovation Index (NEX)) with technology stocks (PSE), four energy sub-indices of Standard & Poor Goldman Sachs Commodity Index (S&P-GSCI) viz., Crude oil, Brent crude oil, Gasoline and Heating oil and three major global equities indices represented by the USA, Europe, World, Dow-Jones Islamic Market Index (DJIMI) along with USD-Euro exchange rate. We find that in a mixed portfolio set-up, the inclusion of NEX in energy portfolio provides better diversification and risk reduction benefits for hedgers and portfolio managers.     

Modeling the time to an initial public offering: When does the fruit ripen?

This paper uses a duration model to examine credit unions who have converted to mutual savings institutions. We investigate the characteristics that they possess which might influence the probability that they subsequently demutualize and become publicly traded banks. Our key findings are as follows. First, we find evidence of positive duration dependence in the data we examine. Second, we find that the hazard of an IPO issue increases in two waves. The first occurs between 3 1/2 years to 4 years reflecting the increased transition intensity for those who wish to demutualize early. However, the majority of the institutions in our sample do so by approximately 8 years after conversion, and this is where the second spike in the hazard occurs. Finally, upon estimating the model with Cox’s (Biometrika 62:269–276, 1975) semi-parametric partial likelihood approach, we find the probability that a converted institution will issue an IPO is influenced to a large extent by various measures that capture asset quality, in particular through measures that are equity driven. However, contrary to what is found in the literature on bank transformation, we find that the size of an institution does not appear to influence the hazard rate within this industry.     

Periodic inspection plans: The case of Weibull distribution

In estimating the lifetime distribution of a product, the efficiency of a periodic inspection plan vis-á-vis with the continuous inspection plan is discussed. The periodic inspection plan envisages inspecting the units in the sample periodically at m successive equi-distant time points, for a given choice of m. The issue of choosing the value of m is also discussed. The discussions are carried out when the underlying lifetime distribution is Weibull.