While it is widely acknowledged that internal R&D is a fundamental source of the ability to absorb, select and use external knowledge, severe data limitations prevent from capturing differences across firms in this respect. Using a novel dataset supplied by the Italian Bureau of Statistics, we highlight that, when controlling for internal R&D efforts, not all firms are equally prone to gain access to external technology, and to the knowledge provided by universities in particular. We find that firms which do not only perform R&D activities but also belong to a group exhibit a higher propensity to access external knowledge by either contracting out R&D or cooperating with external parties, as compared to independent firms that are not organi...