The sentix economic index is calculated from a monthly survey of over 5,500 private and institutional investors (as of September 2022) on their assessment of the economic situation and their economic expectations (6-month expectations). sentix economic index combines these two sub-questions into an overall index.The sentix economic index is the "first mover" among the monthly sentiment indicators on economic development. It is surveyed within two days at the beginning of the month among investors registered with Sentix and published shortly afterwards. Thus, it is the first available among the leading indicators such as the ZEW economic expectations, the business climate or the economic sentiment.