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The objective of this study is to identify the impact of the shadow economy on renewable and nonrenewable energy consumption at aggregated and disaggregated levels over the period of 1972Q1-2018Q4 in Pakistan. This study carries nonlinear/asymmetric time series analysis such as quantile unit root test for stationary of data series, newly developed quantile cointegration (Xiao, J. Econom. 150:248–260, 2009) for existence of long-run relationships and novel quantile causality approach (Troster, Econom. Rev. 37, 850–866, 2018) are used to identify direction of causality over the quantiles. The results confirm that quantiles of shadow economy cointegrate with the quantiles of energy consumption at aggregated and disaggregated levels. The results of quantile regression show that a shadow economy has a positive and significant impact on renewable and nonrenewable energy consumption at aggregated and disaggregated levels in all quantiles starting from extreme low quantiles to extreme high quantiles. Furthermore, the results of quantile causality illustrate a unidirectional causality running from underground economy to fluctuations in renewable, nonrenewable, and total energy consumption. More specifically, disaggregated energy consumptions such as oil, gas, nuclear, hydro, and gas are also caused by shadow economy, generally in low and high tails/quantiles.

This empirical study investigates the leverage effect in six Eastern European countries under normal and non-normaldistribution densities for the sample period from January 2020 to August 2020. We find three countries, Bulgaria, CzechRepublic and Russia which are subject to ARCH effect whereas Poland, Romania and Hungary do not exhibit ARCHeffect in daily stock returns. Further, our study finds leverage effect, where past bad news affects is asymmetrical, pastnegative returns cause more volatility in current stock returns as compared to past positive returns, in three EasternEuropean countries. Based on the AIC and BIC model selection criteria we find that the non-normal student t-distributionand GED produce reliable estimates for Bulgaria, Czech Republic and Poland, respectively. The autocorrelation functionQ1 statistic confirms the insignificance of autocorrelation in residuals of TGARCH model. The impact of stock marketdynamics on other industries, such as pharmaceutical industry, textile and clothing industry, automotive industry issignificant, especially in the conditions of COVID-19 pandemic

This study is intended to reaffirm the existence and profitability of momentum investment strategies in 40 countries around the world during the period 1996–2018.The contradictory findings of previous research on the existence and profitability of momentum strategies have raised a pertinent question on the validity of efficient market hypothesis. We documented the momentum effect in 90% of our sample countries of which 52.5% exhibited positive momentum effect while 37.5% exhibited negative momentum effect. The findings were robust to two distinct sub-period analyses. The clear rejection of efficient market hypotheses is valuable to momentum traders and stock market regulators.The International Journal of Banking and Finance, Vol. 13. Number 2, 2017: 75-93751. IntroductionFinance literature carries substantial evidence on the existence and profitability of momentum returns since the seminal work of Jegadeesh and Titman (1993). Many studies have documented instances where stocks kept on outperforming (underperforming) for the next three to 12 months if they had outperformed (underperformed) during several previous months. Jegadeesh and Titman (1993)

The study aims to reaffirms the existence of short-term momentum effect in 13 developed and emerging stock markets where previous literature has lack of consensus. Although many studies emphasis on the existence of momentum effect, but still, there are substantial number of researchers that deny the its presence. The contradictory finding of many researchers over the existence of momentum effect, raises a serious question, to what extend our stock markets are informationally efficient and whether investor can make abnormal profits by using momentum investment strategies. This study applies momentum investment strategy, J6K6, to calculate momentum returns. Our study finds negative significant momentum effect in all 13 stock markets. Although momentum effect is present in 13 countries but Investors are not able to attain abnormal profit through momentum investing. These findings have an utmost importance for practitioners that they should not adopt momentum investment strategies in these countries as these strategies are generating lose. Moreover, stock market regulators should formulate these markets on the notion of efficient market hypothesis.