Results 51 to 60 of about 1,041,681 (327)

Modelling the volatility of crude oil returns: Jumps and volatility forecasts

open access: yesInternational Journal of Finance and Economics, 2020
© 2020 John Wiley & Sons, Ltd. This is the peer reviewed version of the following article: Dutta, A., Bouri, E., Roubaud, D. (2020). Modelling the volatility of crude oil returns: Jumps and volatility forecasts.
Anupam Dutta, Elie Bouri, D. Roubaud
semanticscholar   +1 more source

Asymmetric thresholds of macroeconomic volatility's impact on stock volatility in developing economies: a study in Vietnam [PDF]

open access: yesJournal of Economics and Development
Purpose – This paper examines the impact of macroeconomic volatility on stock volatility, both under normal conditions and during the COVID-19 pandemic in Vietnam.
Lien Thi Nguyen   +2 more
doaj   +1 more source

Volatility of Volatility and Tail Risk Premiums [PDF]

open access: yesFinance and Economics Discussion Series, 2013
This paper reports on tail risk premiums in two tail risk hedging strategies: the S&P 500 puts and the VIX calls. As a new measure of tail risk, we suggest using a model-free, risk-neutral measure of the volatility of volatility implied by a cross section of the VIX options, which we call the VVIX index.
openaire   +4 more sources

The Long-lived Volatility of Korean Stock Market and Its Relation to Macroeconomic Conditions

open access: yesKDI Journal of Economic Policy, 2013
This study aims to understand the long-run movement of volatility in Korean stock market by decomposing stock volatility into the long-lived and the short-lived components.
Kim, Young Il
doaj   +1 more source

COVID-19 Shock and the Time-Varying Volatility Spillovers Among the Energy and Precious Metals Markets: Evidence From A DCC-GARCH-CONNECTEDNESS Approach

open access: yesFrontiers in Public Health, 2022
The outbreak of the COVID-19 epidemic intensified the volatility of commodity markets (the energy and precious metals markets), which created a significant negative impact on the volatility spillovers among these markets. It may also have triggered a new
Xiaoyu Tan   +5 more
doaj   +1 more source

A VOLATILITY-OF-VOLATILITY EXPANSION OF THE OPTION PRICES IN THE SABR STOCHASTIC VOLATILITY MODEL [PDF]

open access: yesInternational Journal of Theoretical and Applied Finance, 2014
We propose a new type of asymptotic expansion for the transition probability density function (or heat kernel) of certain parabolic partial differential equations (PDEs) that appear in option pricing. As other, related methods developed by Costanzino, Hagan, Gatheral, Lesniewski, Pascucci, and their collaborators, among others, our method is based on ...
Nistor, Victor   +2 more
openaire   +6 more sources

Virtual volatility [PDF]

open access: yesPhysica A: Statistical Mechanics and its Applications, 2007
We introduce the concept of virtual volatility. This simple but new measure shows how to quantify the uncertainty in the forecast of the drift component of a random walk. The virtual volatility also is a useful tool in understanding the stochastic process for a given portfolio.
A. Christian Silva, Richard E. Prange
openaire   +3 more sources

The carboxylate “gripper” of the substrate is critical for C‐4 stereo‐inversion by UDP‐glucuronic acid 4‐epimerase

open access: yesFEBS Letters, EarlyView.
UDP‐glucuronic acid 4‐epimerase (UGAepi) catalyzes NAD+‐dependent interconversion of UDP‐glucuronic acid (UDP‐GlcA) and UDP‐galacturonic acid (UDP‐GalA) via C4‐oxidation, 4‐keto‐intermediate rotation, and C4‐reduction. Here, Borg et al. examined the role of the substrate's carboxylate group in the enzymic mechanism by analyzing NADH‐dependent reduction
Annika J. E. Borg   +2 more
wiley   +1 more source

Intensity and Direction of Volatility Spillover Effect in Carbon–Energy Markets: A Regime-Switching Approach

open access: yesAlgorithms, 2022
This paper advances a volatility-regime-switching mechanism to investigate the intensity and direction of the volatility spillover effect in carbon–energy markets.
Leon Li
doaj   +1 more source

TRPM8 levels determine tumor vulnerability to channel agonists

open access: yesMolecular Oncology, EarlyView.
TRPM8 is a Ca2+ permissive channel. Regardless of the amount of its transcript, high levels of TRPM8 protein mark different tumors, including prostate, breast, colorectal, and lung carcinomas. Targeting TRPM8 with channel agonists stimulates inward calcium currents followed by emptying of cytosolic Ca2+ stores in cancer cells.
Alessandro Alaimo   +18 more
wiley   +1 more source

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