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Volatility dynamics under an endogenous Markov-switching framework : a cross-market approach

Song, Wonho; Ryu, Doojin; Webb, Robert I. - In: Quantitative finance 18 (2018) 9, pp. 1559-1571

Persistent link: https://www.econbiz.de/10011913204

Implied volatility index of KOSPI200 : information contents and properties

Ryu, Doojin - In: Emerging markets finance & trade : a journal of the … 48 (2012), pp. 24-39

Persistent link: https://www.econbiz.de/10009682531

An investigation of return-volatility relationship using high-frequency VKOSPI data

Bagchi, Debasis; Lee, Changjun; Ryu, Doojin - In: Afro-Asian Journal of Finance and Accounting : AAJFA 3 (2012/13) 3, pp. 256-273

Persistent link: https://www.econbiz.de/10010210130

Effects of the US stock market return and volatility on the VKOSPI

Han, Heejoon; Kutan, Ali Mustafa; Ryu, Doojin - 2015

The KOSPI (Korea Composite Stock Price Index) 200 options are one of the most actively traded derivatives in the world. This paper empirically examines (a) the statistical properties of the Korea's representative implied volatility index (VKOSPI) derived from the KOSPI 200 options and (b) the...

Persistent link: https://www.econbiz.de/10011376746

Are the KOSPI 200 implied volatilities useful in value-at-risk models?

Kim, Jun Sik; Ryu, Doojin - In: Emerging markets review 22 (2015), pp. 43-64

Persistent link: https://www.econbiz.de/10011304192

Regime-dependent relationships between the implied volatility index and stock market index

Lee, Jaeram; Ryu, Doojin - In: Emerging markets finance & trade : a journal of the … 50 (2014) 5, pp. 5-17

Persistent link: https://www.econbiz.de/10010485198

Weather and stock market volatility : the case of a leading emerging market

Shim, Hyein; Kim, Hyeyoen; Kim, Junyeup; Ryu, Doojin - In: Applied economics letters 22 (2015) 10/12, pp. 987-992

Persistent link: https://www.econbiz.de/10011286532

Modeling and predicting the market volatility index : the case of VKOSPI

Han, Heejoon; Kutan, Ali Mustafa; Ryu, Doojin - 2015

The KOSPI 200 options are one of the most actively traded derivatives in the world. This paper empirically examines (a) the statistical properties of the Korea's representative implied volatility index (VKOSPI) derived from the KOSPI 200 options and (b) macroeconomic and financial variables that...

Persistent link: https://www.econbiz.de/10010478493

Asymmetric and negative return-volatility relationship: the case of the VKOSPI

Guo, Biao; Han, Qian; Ryu, Doojin; Webb, Robert I. - 2013

This study examines the short-term relationship between stock market returns and implied volatility using high frequency data . This is the first study to analyze high frequency data on the VKOPSIa newly introduced volatility index implied by the KOSPI200 options. KOSPI 200 optioins are...

Persistent link: https://www.econbiz.de/10011003232

Modeling and predicting the market volatility index: The case of VKOSPI

Han, Heejoon; Kutan, Ali M.; Ryu, Doojin - 2015

Persistent link: https://www.econbiz.de/10010478805