期刊名称：Zbornik radova Ekonomskog fakulteta u Rijeci, Časopis za ekonomsku teoriju praksu
印刷版ISSN：1331-8004
出版年度：2019
卷号：37
期号：2
页码：741-758
DOI：10.18045/zbefri.2019.2.741
出版社：University of Rijeka Faculty of Economics
摘要： The purpose of this study is to analyse Zagreb Stock Exchange CROBEX Index reactions to selected macroeconomic announcements within ultra-short time intervals. We utilize 5-minute rates of returns from September 2017 to March 2018 and 25 macroeconomic announcements. After carefully arranging the data, we ran the regression with dummy variables capturing the exact announcement times. We used heteroscedasticity and autocorrelation consistent (HAC) estimations in order to account for specific characteristics of intraday data and to retain the robustness of the results. Our results indicate that, for short intraday periods, some reactions are statistically significant, but the majority stays insignificant. These conclusions support the semi-strong form of the efficient-market hypothesis and are in line with inferences of similar studies of advanced economies.
