The main purpose of this paper is to evaluate the effect of crude oil price on global fertilizer prices in both the mean and volatility. The endogenous structural breakpoint unit root test, ARDL model, and alternative volatility models, including GARCH, EGARCH, and GJR models, are used to investigate the relationship between crude oil price and six global fertilizer prices. The empirical result...

The main purpose of this paper is to evaluate the effect of crude oil price on global fertilizer prices in both the mean and volatility. The endogenous structural breakpoint unit root test, ARDL model, and alternative volatility models, including GARCH, EGARCH, and GJR models, are used to investigate the relationship between crude oil price and six global fertilizer prices. The empirical result...

Many prominent continuous-time stochastic volatility models exhibit certain functional relationships between price jumps and volatility jumps. We show that stochastic volatility models like the Ornstein-Uhlenbeck and other continous-time CARMA models as well as continous-time GARCH and EGARCH models all exhibit such functional relations. We investigate the asymptotic behaviour of certain functi...

This paper employs the symmetric GARCH and asymmetric GJR-GARCH(1,1) E-GARCH(1,1) models to explain dynamics of PLN/EUR PLN/USD exchange rates in Poland for periods January 2015 July 2022. The result our study shows that USD rate is more susceptible market fluctuations events than EUR rate. Additionally, both rates' volatility persists after a crisis while, with taking longer until subsides. Us...

This article discusses a comparison of the GARCH and EGARCH conditional variance methods, with respect to Fuzzy Gaussian EGARCH. The returns four exchange rates were forecasted at daily periodicity from January 2015 November 2022 out-of-sample, 2019, December 2022. results indicate that models better estimate volatility behaviour market series compared traditional techniques. Therefore, recomme...

Even though both symmetric and asymmetric conceptions of news impacts are well-established in the disciplines economics financial markets, effects combining multiple shocks on volatility tourism demand have not yet been delved into or gauged any tourist destination. This work hypothesises verifies that impact curve (NIC), conditional heteroscedastic models, suitable for forecasting Malaysian in...

This paper investigates the nature of volatility characteristics of stock returns in the Bangladesh stock markets employing daily all share price index return data of Dhaka Stock Exchange (DSE) and Chittagong Stock Exchange (CSE) from 02 January 1993 to 27 January 2013 and 01 January 2004 to 20 August 2015 respectively.  Furthermore, the study explores the adequate volatility model for the stoc...

We use Generalized Autoregressive Conditional Heteroscedasticity (GARCH) models to examine volatility of stock prices for firms listed in the Dar es Salaam Stock Exchange (DSE). In doing so, both symmetric and asymmetric GARCH are used this study. The descriptive analysis data shows that standard deviation series returns is high, indicating a high level daily fluctuations, log value mean close ...

Seasonal production, weather abnormalities, and high perishability introduce a degree of volatility to potato prices. Price is said be asymmetric when positive negative shocks the same magnitude affect it in dissimilar way. GARCH symmetric model, cannot capture price volatility. EGARCH, APARCH, GJR-GARCH models are popularly used In this paper, an attempt made model weekly wholesale modal potat...