This year's Summer Institute in Competition Policy was organized in cooperation with Aalto University in Helsinki and was held from June 1-5 in Hanko, Finland. Researchers from MaCCI and Helsinki as well as invited scholars from all over the world presented a diverse array of theoretical and empirical work in competition economics. This included several contributions on collusion, merger control, and competition issues on digital platforms. As always, the Summer Institute offered numerous opportunities for initiating and continuing collaborative research projects.