This document discusses how different institutional logics shape open data ecosystems and how these logics can be mediated. It analyzes the UK open data ecosystem through interviews and defines two main logics: a "digital commons logic" that focuses on openness and sharing, and a "commercial-efficiency logic" that emphasizes economic growth. These logics are mediated in hybrid organizations that combine elements of both. The document also proposes future research on open data ecosystems at the municipal level and the role of triadic hybrids.