While the term corporate entrepreneurship (CE) generally is assumed to concern large firms, CE also exists within small firms, although perhaps with different antecedents and outcomes (Nason, McKelvie & Lumpkin, 2013). For instance, Fini et al. (2012) state that CE activities in smaller firms may be driven more by grassroots initiatives as opposed to top-down, management driven processes. Indeed, many larger firms have engaged in intentional tactics to “act smaller” to stimulate entrepreneurial activity (Kuratko, et al., 2001). In this study, we examine how organizational size affects CE activities. We build upon the extant literature on CE antecedents to explicate how and why there are differences across organizations of different sizes. We explore CE antecedents as part of the CEAI dimensions and link them to outputs such as product launches and financial performance.