Monday, September 22nd, 2025
9:30 – 10:30 Opening - Chair: Elena Navajas-Cawood (JRC)
Welcome address: Michele Vespe (Head of the Digital Economy Unit, JRC)
Keynote by Rita Wezembeek Director Dir. D, DG CNECT: “State of play on DMA enforcement”
11:00 – 13:00 Session 1 - Chair: Amelia Fletcher (University of East Anglia)
Imke Reimers (Cornell University and ZEW) and Joel Waldfogel (University of Minnesota, NBER, ZEW): “The Elusive Goal of Defining Self-Preferencing”
Chiara Farronato (Harvard University, NBER and CEPR), Andrey Fradkin (Boston University, MIT IDE) and Alexander MacKay (University of Virginia): “Vertical lntegration and Consumer Choice: Evidence from a Field Experiment“
Alexandre de Cornière (TSE), Kinshuk Jerath (Columbia University) and Greg Taylor (University of Oxford): “Seller-Side Tying of Platform Services”
Sverrir Arnorsson (University of Zurich), Stefan Bechtold (ETH Zurich), Reinhold Kesler (University of Düsseldorf), Filippo Lancieri (Georgetown University), Christian Peukert (University of Lausanne) and Amit Zac (University of Amsterdam): “Shrinking Shelf: The Effects of Digital Regulotion on Amazon”
14:00 – 15:30 Session 2 - Chair: Fiona Scott-Morton
Martino Banchio (Bocconi University), Francesco Oecarolis (Bocconi University), Carl-Christian Groh (University of Bonn), Rafael Jimenez-Duran (Bocconi University) and Miguel Risco (Bocconi University): “Contestability and Optimal Regulation in Social Media Platjorm Markets”
Jack (Peiyao) Ma (University of Oxford), Laura Lasio (JRC), Andrea Mantovani (Toulouse Business School), Carlo Reggiani (JRC) and Néstor Duch-Brown (JRC): “Online Travel Agencies and Beyond: The Raie of Sales Channels for Hotels and Consumers”
Richard Feasey (CMA and CERRE), Giorgio Monti (Tilburg University and CERRE) and Alexandre de Streel (University of Namur, College of Europe and CERRE): “The Process of Enforcing the DMA”
16:00 – 18:00 Session 3 - Chair: Alexandre de Cornière
Leonardo Madia (University of Padua), Fabio M. Manenti (University of Padua) and Massimo Motta (University Pompeu Fabra): “Platform envelopment and antitrust”
Joan Calzada (University of Barcelona), Néstor Duch-Brown (JRC), Xavier Fageda (University of Barcelona) and Nicandro Quirós (University of Barcelona): “Who benefits from Google's SERP? The impact of the DMA on the Air Travel Market”
Louis-Daniel Pape (Télécom Paris, Center for Research in Economies (CREST) - Institut Polytechnique de Paris) and Michelangelo Rossi (Télécom Paris, Center for Research in Economies (CREST) - Institut Polytechnique de Paris, and CESifo): “Is competition only one click away? The Digital Markets Act Impact on Google Maps”
Xiaoxia Lei (Shanghai Jiao Tong University), Yixing Chen (University of Notre Dame) and Ananya Sen (Carnegie Mellon University): “Trade-offs in leveraging external data capabilities: Evidence from a field experiment in an online search market”
Tuesday, September 23rd, 2025
8:30– 10:00 - Session 4 - Chair: Zhiqi Chen
Marc Bourreau (Telecom Paris, Institut Polytechnique de Paris, CREST and CESifo), Adrien Raizonville (Telecom Paris, Institut Polytechnique de Paris) and Guillaume Thébaudin (Telecom Paris, Institut Polytechnique de Paris): “lnteroperability between Ad-Financed Plaiforms with Endogenous Multi-Homing”
Francesco Decarolis (Bocconi University), Tommaso Pellegrinetti (Bocconi University), Gabriele Rovigatti (Bank of ltaly and CEPR), Michele Rovigatti (Bocconi University) and Ksenia Shakhgildyan (Bocconi University): “Algorithmic Competition and lnformational Advantage in Digital Markets: Evidence from Search Auctions”
Stefano Comino (University of Udine), Alessandro Fedele (Free University of Bolzano) and Fabio M. Manenti (University of Padua): “Cyber(in)security in Digital Services: The Unintended Effects of lnteroperability”
10:30 – 12:00 Session 5 - Chair: Néstor Duch-Brown (JRC)
Heski Bar-Isaac (University of Toronto) and Sandro Shelegia (University Pompeu Fabra): “Algorithms, Leaming, and Pricing”
Jiayi Hou (Peking University), Xuan Teng (University of Munich) and Xuan Wang (Peking University): “Cross-Plaiform Entry Effect of Commission Rate: Evidence from Mobile Applications in China”
Gaston Llanes (Catholic University of Chile) and Leonardo Madia (University of Padua): “App store competition”
12:00 – 13:30 Closing - Chair: Nestor Duch-Brown (JRC)
Keynote by Julian Wright (National University of Singapore): “App Stores and Contestability”