Abstract
Risk appetite refers to investors' willingness to carry risks. Therefore, risk appetite is accepted and calculated by many countries as the stability criterion of financial markets. The relationship between BIST 100 index with domestic and foreign investors risk appetite data is investigated in the period of 1974-2016, by using time series analysis. Firstly Augmented Dickey Fuller (ADF) and Phillips Perron (PP) unit root tests were used to test the stability of the series and series were found to be stationary in the first differences. The Johansen Cointegration test was conducted to determine the existence of the long run relationship between BIST 100 index with domestic and foreign investor risk appetite index which are stationary at the same level. After finding the long run relationship, the error correction model was established. The coefficient of error terms was statistically significant and negative sign that it is moving back to the equilibrium in the case of a deviation. In order to see the direction of the relationship between the series, Granger Causality analysis was made and a significant causality relationship was found from BIST 100 index to both domestic and foreign investor risk appetite index.