Results 1 to 10 of about 128,425 (215)

Jump test and Estimate the Size and Probability of Jump in the Stock Market Using Stochastic Volatility Models [PDF]

open access: yesمدلسازی اقتصادسنجی, 2022
New findings show that volatility models with jump component are more successful than without jumping models in modeling stylized facts about the stock market.
Alireza Najjarpour, Mojtaba Rostami
doaj   +1 more source

Testing for the Presence of the Leverage Effect without Estimation

open access: yesMathematics, 2022
Problem: The leverage effect plays an important role in finance. However, the statistical test for the presence of the leverage effect is still lacking study.
Zhi Liu
doaj   +1 more source

Modeling Crude Oil Price Dynamics: Investigation of Jump and Volatility Using Stochastic Volatility Models (Case study: WTI crude oil prices in 2020 and 2021) [PDF]

open access: yesPizhūhishnāmah-i Iqtiṣād-i Inirzhī-i Īrān, 2020
Due to the strategic role of volatility and instability of crude oil prices and their effects on all countries of the world, different methods of modeling and forecasting are necessary.
mojtaba rostami   +1 more
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

Assessing the Impact of Credit Risk on Equity Options via Information Contents and Compound Options

open access: yesRisks, 2023
This work aims to develop a measure of how much credit risk is priced into equity options. Such a measure appears particularly appealing when applied to a portfolio of equity options, as it allows for the factoring in of firm-specific default dynamics ...
Federico Maglione, Maria Elvira Mancino
doaj   +1 more source

Economic impact of industry-sponsored clinical trials in inflammatory bowel diseases: Results from the national institute of gastroenterology “Saverio de Bellis”

open access: yesFrontiers in Pharmacology, 2022
Introduction: The majority of the money spent on possible new medications’ clinical trials is accounted for by the innovative pharmaceutical sector, which also stimulates the economy of a nation.
Maurizio Gaetano Polignano   +5 more
doaj   +1 more source

Investigating Short and Long Run Volatility Movements in the Context of COVID-19 Pandemic: A Case Study for Norwegian Stock Market [PDF]

open access: yesOvidius University Annals: Economic Sciences Series, 2021
The main aim of this empirical study is to examine short and long run volatility movements based on a case study for Norwegian Stock Market, i.e. Oslo Stock Exchange.
Cristi Spulbar   +2 more
doaj  

The Impact of the COVID-19 Pandemic on the Cryptocurrency Market

open access: yesScientific Annals of Economics and Business, 2022
The purpose of our paper is to analyze the main factors which influence fiscal balance’s evolution and thereby identify solutions for configuring a sustainable fiscal policy.
Nidhal Mgadmi   +3 more
doaj   +1 more source

Properties of returns and variance and the implications for time series modelling: Evidence from South Africa

open access: yesModern Finance, 2023
This paper investigates the properties of South African stock returns and the underlying variance. The investigation into the properties of stock returns and the behaviour of the variance underlying returns is undertaken using model-free approaches and ...
Jan Jakub Szczygielski   +1 more
doaj   +1 more source

Modeling the exchange rate of the euro against the dollar using the ARCH/GARCH models [PDF]

open access: yesBankarstvo, 2016
The analysis of time series with conditional heteroskedasticity (changeable time variability, conditional variance instability, the phenomenon called volatility) is the main task of ARCH and GARCH models.
Kovačević Radovan
doaj   +1 more source

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