TY - JOUR AB - Purpose This paper aims to examine the impact of the Greek economic crisis on the sustainability of the Turkish economy.Design/methodology/approach A generalized autoregressive conditional heteroskedasticity (GARCH) model is used over the Thomson Reuter’s Turkey Index for the period of May 1999 to August 2018 using monthly data. The control variables introduced in the proposed model are the S&P 500 of the US stock market and crude oil prices which are used to isolate more general systemic factors.Findings The structural analysis of volatility with the EGARCH model has shown that current volatility is more influenced by past volatility than by previous month shocks.Research limitations/implications The results can be exploited by investors, portfolio managers and policy makers in their decision-making process.Originality/value It is a first-time effort that examines the impact of the Greek economic crisis on the sustainability of the Turkish economy. The developed methodology can be used by investors, portfolio managers and policy makers in their decision-making process. VL - 49 IS - 4 SN - 0368-492X DO - 10.1108/K-10-2018-0547 UR - https://doi.org/10.1108/K-10-2018-0547 AU - Tsioptsia Kyriaki Argyro AU - Mallidis Ioannis AU - Siskou Thomas AU - Sariannidis Nikolaos PY - 2019 Y1 - 2019/01/01 TI - The impact of the Greek economic crisis on the sustainability of the Turkish economy: A GARCH-based decision-making methodology T2 - Kybernetes PB - Emerald Publishing Limited SP - 1127 EP - 1142 Y2 - 2024/04/24 ER -