Results 11 to 20 of about 5,852 (226)

Short-term effect of COVID-19 pandemic on cryptocurrency markets: A DCC-GARCH model analysis. [PDF]

open access: yesHeliyon, 2023
This research examines the impact of the coronavirus index on the returns and volatility of ten major cryptocurrencies during the COVID-19 pandemic. For this purpose, we applied a multivariate volatility GARCH model with an integrated dynamic conditional correlation (DCC) approach to daily cryptocurrency values observed data during the January-December,
Ben-Ahmed K, Theiri S, Kasraoui N.
europepmc   +4 more sources

Unraveling Alzheimer's disease: Investigating dynamic functional connectivity in the default mode network through DCC-GARCH modeling

open access: yesAperture Neuro
Alzheimer's disease (AD) has a prolonged latent phase. Sensitive biomarkers of amyloid beta ($A\beta$), in the absence of clinical symptoms, offer opportunities for early detection and identification of patients at risk. Current $A\beta$ biomarkers, such
Kun Yue   +4 more
doaj   +3 more sources

Volatility impulse response analysis for DCC‐GARCH models: The role of volatility transmission mechanisms [PDF]

open access: yesJournal of Forecasting, 2020
AbstractThis study introduces volatility impulse response functions (VIRF) for dynamic conditional correlation–generalized autoregressive conditional heteroskedasticity (DCC‐GARCH) models. In addition, the implications with respect to network analysis—using the connectedness approach of Diebold and Y lmaz (Journal of Econometrics, 2014, 182(1), 119–134)
openaire   +3 more sources

A Tail Dependence-Based MST and Their Topological Indicators in Modeling Systemic Risk in the European Insurance Sector

open access: yesRisks, 2020
In the present work, we analyze the dynamics of indirect connections between insurance companies that result from market price channels. In our analysis, we assume that the stock quotations of insurance companies reflect market sentiments, which ...
Anna Denkowska, Stanisław Wanat
doaj   +1 more source

Economic Policy Uncertainty and Energy Prices: Empirical Evidence from Multivariate DCC-GARCH Models

open access: yesEnergies, 2022
Crude oil and natural gas are crucial to the Russian economy. Therefore, this study examined the interconnections between crude oil price, natural gas price, and Russian economic policy uncertainty (EPU) over the period 1994–2019 using multivariate DCC-MGARCH models.
Salim Hamza Ringim   +3 more
openaire   +2 more sources

Estimating Portfolio Value at Risk in the Electricity Markets Using an Entropy Optimized BEMD Approach

open access: yesEntropy, 2015
In this paper, we propose a new entropy-optimized bivariate empirical mode decomposition (BEMD)-based model for estimating portfolio value at risk (PVaR). It reveals and analyzes different components of the price fluctuation.
Yingchao Zou, Lean Yu, Kaijian He
doaj   +1 more source

DCC-GARCH Modeli Yardımıyla İslami Bankalar Arasındaki Etkileşimin Belirlenmesi

open access: yesGaziantep Üniversitesi Sosyal Bilimler Dergisi, 2023
Son yıllarda İslam ekonomilerindeki büyüme ve finansal sistemin gelişimiyle birlikte İslami bankaların finansal piyasalar üzerindeki etkileri artmıştır.
Semra Taspunar Altuntaş   +1 more
doaj   +1 more source

Sensitivity Analysis of Two-Step Multinomial Backtests for Evaluating Value-at-Risk [PDF]

open access: yesتحقیقات مالی, 2022
Objective: Nowadays, the measurement of the risk of the marketplace has a significant effect on investments; however, the inadequate evaluation of this risk will cause a financial crisis and possible bankruptcy.
Mohamad Ali Rastegar, Mehdi Hemati
doaj   +1 more source

Multivariate Asymmetric GARCH Model with Dynamic Correlation Matrix

open access: yesФинансы: теория и практика, 2022
This study examines the problem of modeling the joint dynamics of conditional volatility of several financial assets under an asymmetric relationship between volatility and shocks in returns (leverage effect).
Ju. S. Trifonov, B. S. Potanin
doaj   +1 more source

Comparison of Markowitz Model and DCC-tCopula-LVaR for Portfolio Optimization in the Tehran Stock Exchange [PDF]

open access: yesتحقیقات مالی, 2023
Objective: Considering that investing in the stock market is associated with risk, therefore, its measurement is one of the most important issues for investors.
Gholamreza Taghizadegan   +3 more
doaj   +1 more source

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