This article builds on the concept of nested hybridity. It emphasizes professional practices and organizational design in studying hybridity of steering and management of professional public service organization. The article compares public sector dynamics in higher education in Finland, Norway, and Sweden. The data consists of surveys and interviews on performance management in Nordic universities. Previous studies on hybridity of professional work and public organizations define hybridity as a multidimensional concept that occurs at different levels of social practices. While the multifaceted nature of hybridity is clear, demarcating between levels of hybridity and theoretical approaches remains complex. Based on our empirical findings, no clear top-down or bottom-up causality chains are identified. We question whether hybridity is nested as the levels of hybridity are intervened and connected, but not all levels have implications for all other levels.