Analysis of Relationship Between BIST-100 and BIST Sector Indices with VIX Index

The VIX index is an important index used as an indicator for estimating future expected movements of capital markets worldwide. The aim of this study is to determine the causality relation between the VIX index, the BIST National 100 index and the BIST sectoral indices (Bank, Financial and Technology) for the period between 05.01.2010-22.06.2018. ADF and PP unit root tests, ARDL boundary test and Toda-Yamamoto causality test were used for analysis. According to the cointegration test results, there is a long and statistically significant relationship between VIX index and BIST National 100 (XU100), BIST Bank (XBANK), BIST Financial (XUMAL) and BIST Technology (XUTEK) indices. According to Toda-Yamamoto causality test results, one-way causality relation was found from VIX index towards XU100, XBANK, XUMAL and XUTEK indices