Does financialization retard growth? Time series and cross-sectional evidence

Although financial development is essential for economic development, excessive financialization of the economy is believed to exert a negative effect on output growth. In this article, empirical evidence is presented on the relation between economic growth and financialization as measured by the ratio of credit to GDP and the ratio of publicly traded shares to GDP. The empirical results are based on annual time series data for six country groups as well as cross-sectional data covering a large number of countries. The model is initially specified with unobserved components and estimated in a time-varying parametric framework to account for missing variables. Thereafter, the issue of linear versus quadratic specifications is examined. The results are robust with respect to model specification, estimation method, data type and variable definition, showing in general that financialization has a negative impact on growth. Some evidence is also presented to support the notion of the financial Kuznets curve.