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...

We analyze the effects of monetary policy announcements on stock market liquidity using intraday data. We show that the impairment in liquidity associated with policy announcements occurs primarily after, rather than before, the announcements, and is relatively short-lived, lasting about 1.5...

In this study, we argue that share price reaction to a ®rm's capital expenditure decisions depends critically on the market's assessment of the quality of its investment opportunities. We postulate that announcements of increases (decreases) in capital expenditures positively (negatively)...

Prior studies have provided a number of possible explanations for delayed market reactions to earnings announcements. However, there has been relatively little effort to predict the magnitude of the post-earnings announcement drift (PEAD). We show that the squared correlation coefficient (p2 )...

The implementation of the new revenue recognition standard (ASC 606) has significantly changed the impact of earnings announcements on various measures of market quality and trading activities. In contrast to prior research findings, we show that earning announcements are accompanied by a...