The information content of trades: An analysis of KOSPI 200 index derivatives

D Ryu - Journal of Futures Markets, 2015 - Wiley Online Library
This study examines and compares the information content of futures and options trades by
analyzing the transaction dataset of derivatives underlying the KOSPI 200 index. This …

The impact of net buying pressure on index options prices

D Ryu, D Ryu, H Yang - Journal of Futures Markets, 2021 - Wiley Online Library
This study examines whether the demand for options, as measured by the net buying
pressure of index options, explains the implied volatility structure created by options prices …

Insider trading and information asymmetry: Evidence from the Korea Exchange

D Ryu, H Yang, J Yu - Emerging Markets Review, 2022 - Elsevier
This study examines whether pre-announcement insider trading significantly resolves or
intensifies information asymmetry in the Korean emerging stock market. Local institutions …

Information asymmetry and investor trading behavior around bond rating change announcements

H Yang, HJ Ahn, MH Kim, D Ryu - Emerging Markets Review, 2017 - Elsevier
This study examines stock market reactions to public announcements (corporate bond rating
changes), including changes in stock prices and investor behavior in terms of trading …

The impacts of public news announcements on intraday implied volatility dynamics

J Lee, D Ryu - Journal of Futures Markets, 2019 - Wiley Online Library
We examine the responses of intraday option‐implied volatilities to scheduled
announcements of macroeconomic indicators. The increase in implied volatility around …

Option market characteristics and price monotonicity violations

H Yang, HS Choi, D Ryu - Journal of Futures Markets, 2017 - Wiley Online Library
This study reexamines whether option price monotonicity properties hold in a liquid market
with little market friction and considers the validity of the monotonicity properties in light of …

Trade duration, informed trading, and option moneyness

KH Chung, D Ryu - International Review of Economics & Finance, 2016 - Elsevier
This study shows the relationship between the price impact of a trade and the duration
between trades by extending a trade indicator microstructure model. Using the intraday …

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

W Song, D Ryu, RI Webb - Quantitative Finance, 2018 - Taylor & Francis
This study uses an endogenous Markov-switching framework to examine the
interrelatedness of the volatility dynamics of the US and Korean markets. Previous literature …

Time‐series momentum in China's commodity futures market

H Ham, H Cho, H Kim, D Ryu - Journal of Futures Markets, 2019 - Wiley Online Library
This study examines the time‐series momentum in China's commodity futures market. We
find that a time‐series momentum strategy outperforms classical passive long and cross …

The directional information content of options volumes

D Ryu, H Yang - Journal of Futures Markets, 2018 - Wiley Online Library
This study examines the directional information content realized by trades in a highly liquid
options market by constructing put–call volume ratios and decoupled options‐to‐spot …