On 24 May 2022, The Competition Law Hub exchanged ideas on ongoing projects with Anna Gerbrandy’s research group from Utrecht, including on modern bigness and data-driven assessment of competition law infringements. In addition to the Hub members, we were glad to host Anna Gerbrandy and Viktorija Morozovaite (University of Utrecht), Eva Fischer (LMU Munich), Lena Hornkohl (MPI Luxembourg) and Blerina Nazeraj (University of Siena) for this Jour fixe.