期刊名称：Jurnal Perspektif Pembiayaan dan Pembangunan Daerah
印刷版ISSN：2338-4603
电子版ISSN：2335-8520
出版年度：2020
卷号：7
期号：4
页码：375-392
DOI：10.22437/ppd.v7i4.8795
语种：English
出版社：Program Magister Ilmu Ekonomi Fakultas Ekonomi dan Bisnis Universitas Jambi
摘要：In this paper, we account for memory failure or otherwise in the daily evolution of stock return and volatility within the purview of short and long ranges based on the arrival of fundamental news. This accounts for the return on assets in the current period to be a function of returns realized in the pasts. To achieve this objective, we estimated ARMA, ARFIMA, GARCH, FIGARCH and HYGARCH models. After implementing maximum likelihood estimation technique, we found out that the ARMA coefficients were not significant, the GARCH coefficients were significant and the memory coefficients in terms of ARFIMA, FIGARCH and HYGARCH were statistically significant. In the light of these, we propose the rejection of efficient hypothesis in the long range and document a single memory in volatility in the short range. The study recommends that ARFIMA and HYGARCH are the best forecasting models for return and volatility respectively in the Nigerian stock market.
