Results 31 to 40 of about 724,352 (288)

The Reactive Volatility Model [PDF]

open access: yes, 2013
We present a new volatility model, simple to implement, that includes a leverage effect whose return-volatility correlation function fits to empirical observations.
Aboura, Sofiane   +3 more
core   +1 more source

The Volatility of the “Green” Option-Adjusted Spread: Evidence before and during the Pandemic Period

open access: yesRisks, 2022
The paper is an investigation on the impact of financial markets on the volatility of the green bonds credit risk component, measured by the option-adjusted spread/swap curve (OAS) before and during the pandemic period.
Alessandra Ortolano, Eugenia Nissi
doaj   +1 more source

The Effects of Institutional Investors Herding on the Performance of Iran Capial Market Anomalies [PDF]

open access: yesفصلنامه بورس اوراق بهادار, 2022
Anomalies in financial markets, which is produced and exacerbated by sensitive and imitative behavior and reduces market efficiency, have always been the focus of researchers. In this research, a criterion for measuring the mass turnover of institutional
mohammad hassan ebrahimi sarveolia   +3 more
doaj   +1 more source

Dynamic co-movements of stock market returns, implied volatility and policy uncertainty [PDF]

open access: yes, 2013
We examine time-varying correlations among stock market returns, implied volatility and policy uncertainty. Our findings suggest that correlations are indeed time-varying and sensitive to oil demand shocks and US recessions.
Antonakakis, N.   +2 more
core   +1 more source

Volatility in Live Calf, Live Sheep, and Feed Wheat Return Markets: A Threat to Food Price Stability in Turkey

open access: yesAgriculture, 2022
The volatility of meat prices affects the accessibility and even food security of some consumers in Turkey. This study analyses the prices of selected livestock and a major feed component, wheat, as well as the exchange rate of the domestic currency in ...
Faruk Urak   +4 more
doaj   +1 more source

Vast volatility matrix estimation for high-frequency financial data [PDF]

open access: yes, 2010
High-frequency data observed on the prices of financial assets are commonly modeled by diffusion processes with micro-structure noise, and realized volatility-based methods are often used to estimate integrated volatility.
Wang, Yazhen, Zou, Jian
core   +1 more source

Stochastic Volatility of Volatility in Continuous Time

open access: yesSSRN Electronic Journal, 2009
This paper introduces the concept of stochastic volatility of volatility in continuous time and, hence, extends standard stochastic volatility (SV) models to allow for an additional source of randomness associated with greater variability in the data.
Barndorff-Nielsen, Ole, Veraart, Almut
openaire   +2 more sources

Catecholaminergic modulation of meta-learning

open access: yeseLife, 2019
The remarkable expedience of human learning is thought to be underpinned by meta-learning, whereby slow accumulative learning processes are rapidly adjusted to the current learning environment. To date, the neurobiological implementation of meta-learning
Jennifer L Cook   +6 more
doaj   +1 more source

Development of high-frequency volatility estimators in pricing and trading stock options

open access: yesπ-Economy, 2022
Asset return volatility plays a key role in derivative pricing and hedging, risk management and portfolio allocation decisions. This study examined the economic benefit of high-frequency volatility estimators (measures realized) in option pricing and ...
Gayomey John, Zaytsev Andrey
doaj   +1 more source

Does the inclusion of exposure to volatility into diversified portfolio improve the investment results? Portfolio construction from the perspective of a Polish investor

open access: yesEconomics and Business Review, 2020
The main goal of this research is to analyse the investment benefits from an incorporation of the volatility exposure to the diversified portfolio from the perspective of a Polish investor.
Latoszek Michał, Ślepaczuk Robert
doaj   +1 more source

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