期刊
APPLIED ECONOMICS
卷 54, 期 52, 页码 5991-6007出版社
ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD
DOI: 10.1080/00036846.2022.2108540
关键词
Network analysis; graph theory; BIST 100; volatility; Covid-19
类别
This study investigates the impact of Covid-19 on the network structure of BIST 100 firms. The results show that there is a significant increase in interconnectedness among firms during the Covid-19 period.
This article investigates the effects of Covid-19 on the network structure of BIST 100 firms. Analysis are carried out with filtered daily volatilities. Even after filtering out common factors, correlation and autocorrelation heat maps of the filtered volatilities indicate that there are still some patterns. Granger and contemporaneous type volatility networks are estimated and visualized for both the pre-Covid-19 and Covid-19 periods to determine the network structure differences. The article shows that there are centrality-type structures in the Granger network and chain-type linkages in the contemporaneous network for the pre-Covid-19 periods. The degree of interconnectedness is multiplied three times in the Granger network and eight times in the contemporaneous network with Covid-19.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据