Abrupt Changes in Volatility: Evidence from TEPIX Index in Tehran Stock Exchange
Mansour Khalili Araghi and
Majid Mirzaee Ghazani
Additional contact information
Mansour Khalili Araghi: Faculty of Economics, University of Tehran, Iran.
Majid Mirzaee Ghazani: Faculty of Economics, University of Tehran, Iran.
Iranian Economic Review (IER), 2015, vol. 19, issue 3, 377-393
Abstract:
In this paper, we have examined abrupt changes in volatility of TEPIX index in Tehran stock exchange during August 23, 2010 to June 12, 2014. Applying the iterated cumulative sum of squares (ICSS) algorithm proposed by Inclan and Tiao (1994) and the modified version of this algorithm consisting Kappa 1 and Kappa 2 test statistics developed by Sansó et al. (2004), we have specified that the detection of abrupt changes are mainly explained by local economic and political factors and probably they are behind those changes. This finding is in line with that of Aggarwal et al. (1999) who discovered that countryspecific factors play a key role in determining those sudden shifts in financial markets. In addition, the results of this study ratify the findings of the previous ones suggesting that, when the abrupt changes are embedded into standard GARCH models, the estimated persistence of volatility is decreased significantly.
Keywords: Stock Return Volatility; Volatility Persistence; ICSS Algorithm; GARCH Models. (search for similar items in EconPapers)
Date: 2015
References: View references in EconPapers View complete reference list from CitEc
Citations:
Downloads: (external link)
ftp://80.66.179.253/eut/journl/20153-8.pdf (application/pdf)
Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.
Export reference: BibTeX
RIS (EndNote, ProCite, RefMan)
HTML/Text
Persistent link: https://EconPapers.repec.org/RePEc:eut:journl:v:19:y:2015:i:3:p:377
Access Statistics for this article
Iranian Economic Review (IER) is currently edited by Dr.Hossien Abbasinejad
More articles in Iranian Economic Review (IER) from Faculty of Economics,University of Tehran.Tehran,Iran Contact information at EDIRC.
Bibliographic data for series maintained by [z.rahimalipour] ().