This paper argues that links between academia and other economic sectors are increasing, especially through intersectoral mobility of university graduates. Murray [(2010). "The Oncomouse that Roared: Hybrid Exchange Strategies as a Source of Distinction at the Boundary of Overlapping Institutions." "American Journal of Sociology" 116 (2): 341-388] has identified literature pointing both to blending and continuing co-existence of the academic and commercial worlds. Based on a European-wide study of PhD graduates in the social sciences and humanities (SSH), this paper considers the extent to which intersectoral mobility reflects blending. It finds that intersectoral communities of practice exist mainly in applied fields of knowledge. However, in many areas of the SSH, differences in institutional norms and values inhibit intersectoral mobility, particularly in mid-career stages.