The authors re-examine the return-volatility relationship and its dynamics under a new vector autoregression (VAR) identification framework. By analyzing two model-free impliedvolatility indices - the well-established VIX (in the United States) and the recently published VKOSPI (in Korea) - and...

We examine whether stock-level options information drives mutual fund performance. Our paper is motivated by existing studies indicating that options prices or implied volatilities predict stock returns. We find that stock-implied volatility innovations forecast mutual fund performance....

This study examines the responses of investor sentiment and stock market returns to announcements of changes in analyst recommendation as well as the effect of these announcements on the relationship between sentiment and stock returns. Investor sentiment is more sensitive to upgrade...

This study examines price disagreements and adjustments between actual futures prices and options-implied futures prices in an elaborate setting. We identify which market triggers each type of price disagreement and find that the market that initiates the disagreement adjusts more to eliminate...

This study examines the response of intraday options-implied volatilities to scheduled announcements of major macroeconomic indicators. By analyzing the KOSPI 200 options intraday data, we find that the abnormal implied volatility significantly increases around announcements of macroeconomic...

This study examines price disagreements and adjustments between actual futures prices and options-implied futures prices in an elaborate setting. We identify which market triggers each type of price disagreement and find that the market that initiates the disagreement adjusts more to eliminate...

This study shows that analysts generate firm-specific information rather than market-wide information. While previous studies just report the positive relationship between stock price synchronicity and analyst coverage, we newly suggest that the positive relation can be attributed to the...