Document de treball de l'IEB 2016/12 Cities and Innovation Documents de Treball de l'IEB 2016/12 SMALL SHOPS FOR SALE! THE EFFECTS OF BIG-BOX OPENINGS ON GROCERY STORES Maria Sanchez-Vidal The IEB research program in Cities and Innovation aims at promoting research in the Economics of Cities and Regions. The main objective of this program is to contribute to a better understanding of agglomeration economies and 'knowledge spillovers'. The effects of agglomeration economies and 'knowledge spillovers' on the Location of economic Activities, Innovation, the Labor Market and the Role of Universities in the transfer of Knowledge and Human Capital are particularly relevant to the program. The effects of Public Policy on the Economics of Cities are also considered to be of interest. This program puts special emphasis on applied research and on work that sheds light on policy-design issues. Research that is particularly policy-relevant from a Spanish perspective is given special consideration. Disseminating research findings to a broader audience is also an aim of the program. The program enjoys the support from the IEB-Foundation. Documents de Treball de l'IEB 2016/12 SMALL SHOPS FOR SALE! THE EFFECTS OF BIG-BOX OPENINGS ON GROCERY STORES *