Tommaso M. Valletti

Imperial College Business School

Professor of Economics

South Kensington Campus

Exhibition Road

London SW7 2AZ, SW7 2AZ

United Kingdom

Centre for Economic Policy Research (CEPR)

Fellow

London

United Kingdom

  • Imperial College Business School

SCHOLARLY PAPERS

72

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826

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751

Scholarly Papers (72)

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1.

The EU Digital Markets Act: A Report from a Panel of Economic Experts

Cabral, L., Haucap, J., Parker, G., Petropoulos, G., Valletti, T., and Van Alstyne, M ., The EU Digital Markets Act, Publications Office of the European Union, Luxembourg, 2021,ISBN 978-92-76-29788-8, d oi:10.2760/139337, JRC122910., Boston University Questrom School of Business Research Paper No. 3783436, NYU Stern School of Business Forthcoming
Number of pages: 36 Posted: 18 Feb 2021 Last Revised: 02 Aug 2023
Luis M. B. Cabral, Justus Haucap, Justus Haucap, Geoffrey Parker, Georgios Petropoulos, Tommaso M. Valletti and Marshall W. Van Alstyne
New York University (NYU) - Leonard N. Stern School of Business - Department of Economics, German Institute for Economic Research (DIW Berlin)Heinrich Heine University Dusseldorf - Department of Economics, Dartmouth College, Massachusetts Institute of Technology (MIT), Imperial College Business School and Boston University - Department of Management Information Systems
Downloads 5,311 (3,267)

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Digital Markets Act, Regulation, Competition Policy, Digital Platforms

2.

Attention Oligopoly

Downloads 2,995 ( 8,420)
Citation 35

Attention Oligopoly

American Economic Journal: Microeconomics, Forthcoming
Number of pages: 40 Posted: 21 Jun 2018 Last Revised: 05 Jun 2021
Andrea Prat and Tommaso M. Valletti
Columbia University - Columbia Business School, Finance and Imperial College Business School
Downloads 2,995 (8,271)
Citation 32

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media mergers, attention oligopoly

Attention Oligopoly

CEPR Discussion Paper No. DP16231
Number of pages: 43 Posted: 14 Jul 2021
Andrea Prat and Tommaso M. Valletti
Columbia University - Columbia Business School, Finance and Imperial College Business School
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Citation 11
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3.

Horizontal Mergers and Product Innovation

Number of pages: 20 Posted: 19 Jul 2017 Last Revised: 28 Mar 2018
Giulio Federico, Gregor Langus and Tommaso M. Valletti
Oxera Consulting LLP, ECA Economics GmbH and Imperial College Business School
Downloads 1,255 (32,403)
Citation 9

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Mergers, innovation, efficiencies

4.

Scrambled Eggs and Paralyzed Policy: Breaking Up Consummated Mergers and Dominant Firms

Industrial and Corporate Change
Number of pages: 48 Posted: 14 Dec 2020 Last Revised: 30 Jul 2021
John E. Kwoka Jr. and Tommaso M. Valletti
Northeastern University - Department of Economics and Imperial College Business School
Downloads 1,157 (36,431)
Citation 7

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antitrust, breakups, merger, Big Tech

5.

Increasing Market Power and Merger Control

Competition Law & Policy Debate, Vol. 5, No. 1, pp. 26-35, 2019
Number of pages: 16 Posted: 14 Jun 2019 Last Revised: 16 Jun 2019
Tommaso M. Valletti and Hans Zenger
Imperial College Business School and European Union - Directorate General for Competition
Downloads 1,119 (38,139)
Citation 8

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increasing market power, merger control, potential competition

6.

Concentration and Competition: Evidence from Europe and Implications for Policy

Downloads 1,110 (38,621)
Citation 3

Concentration and Competition: Evidence from Europe and Implications for Policy

Number of pages: 40 Posted: 28 Dec 2021 Last Revised: 15 Mar 2022
Gabor Koltay, Szabolcs Lorincz and Tommaso M. Valletti
European Union - Directorate General for Competition, European Commission, DG Competition, Chief Economist's Team and Imperial College Business School
Downloads 757 (64,616)
Citation 2

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mergers, antitrust, European Union, concentration, industries

Concentration and Competition: Evidence from Europe and Implications for Policy

CESifo Working Paper No. 9640
Number of pages: 42 Posted: 07 Apr 2022
Gabor Koltay, Szabolcs Lorincz and Tommaso M. Valletti
European Union - Directorate General for Competition, European Commission, DG Competition, Chief Economist's Team and Imperial College Business School
Downloads 353 (163,809)
Citation 1

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mergers, antitrust, European Union, concentrations, industries

7.

Net Neutrality with Competing Internet Platforms

Downloads 825 (58,504)
Citation 22

Net Neutrality with Competing Internet Platforms

Number of pages: 35 Posted: 20 May 2012
Marc Bourreau, Frago Kourandi and Tommaso M. Valletti
Telecom ParisTech, National and Kapodistrian University of Athens - Department of Economics and Imperial College Business School
Downloads 469 (118,079)
Citation 5

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net neutrality, two-sided markets, platform competition, investment, innovation

Net Neutrality with Competing Internet Platforms

CEIS Working Paper No. 307
Number of pages: 46 Posted: 15 Feb 2014 Last Revised: 12 Mar 2015
Marc Bourreau, Frago Kourandi and Tommaso M. Valletti
Telecom ParisTech, National and Kapodistrian University of Athens - Department of Economics and Imperial College Business School
Downloads 353 (163,809)
Citation 8

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Net neutrality; Two-sided markets; Platform competition; Investment; Innovation.

Net Neutrality with Competing Internet Platforms

CEPR Discussion Paper No. DP9827
Number of pages: 46 Posted: 02 Jun 2014
Marc Bourreau, Frago Kourandi and Tommaso M. Valletti
Telecom ParisTech, National and Kapodistrian University of Athens - Department of Economics and Imperial College Business School
Downloads 3 (1,220,230)
Citation 9
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Innovation, Investment, Net neutrality, Platform competition, Two-sided markets

8.

Political Power and Market Power

Downloads 816 (59,449)
Citation 5

Political Power and Market Power

CEPR Discussion Paper No. DP17178
Number of pages: 83 Posted: 16 Mar 2023 Last Revised: 10 Nov 2023
Bo Cowgill, Andrea Prat and Tommaso M. Valletti
Columbia University - Columbia Business School, Columbia University - Columbia Business School, Finance and Imperial College Business School
Downloads 816 (58,566)

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Political influence, lobbying, mergers, industrial concentration.

Political Power and Market Power

CEPR Discussion Paper No. DP17178
Number of pages: 58 Posted: 27 May 2022
Bo Cowgill, Andrea Prat and Tommaso M. Valletti
Columbia University - Columbia Business School, Columbia University - Columbia Business School, Finance and Imperial College Business School
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9.

The Theory of Access Pricing: An Overview for Infrastructure Regulators

Number of pages: 35 Posted: 20 Apr 2016
Tommaso M. Valletti and Antonio Estache
Imperial College Business School and Université Libre de Bruxelles (ULB) - European Center for Advanced Research in Economics and Statistics (ECARES)
Downloads 752 (66,146)

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10.

Mergers with Differentiated Products: Where Do We Stand?

Downloads 636 (81,920)
Citation 7

Mergers with Differentiated Products: Where Do We Stand?

Review of Industrial Organization, Vol. 58, No. 1, pp. 179-212, 2021
Number of pages: 44 Posted: 28 Sep 2020 Last Revised: 17 Feb 2021
Tommaso M. Valletti and Hans Zenger
Imperial College Business School and European Union - Directorate General for Competition
Downloads 635 (81,008)
Citation 13

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Mergers, Unilateral Effects, Differentiated Products

Mergers with Differentiated Products: Where Do We Stand?

CEPR Discussion Paper No. DP15066
Number of pages: 46 Posted: 28 Jul 2020 Last Revised: 16 Aug 2020
Tommaso M. Valletti and Hans Zenger
Imperial College Business School and European Union - Directorate General for Competition
Downloads 1 (1,248,433)
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differentiated products, mergers, Unilateral Effects

11.

Active and Passive Waste in Government Spending: Evidence from a Policy Experiment

CEIS Working Paper No. 115
Number of pages: 61 Posted: 08 Apr 2008
Oriana Bandiera, Andrea Prat and Tommaso M. Valletti
London School of Economics & Political Science (LSE) - Suntory and Toyota International Centres for Economics and Related Disciplines (STICERD), Columbia University - Columbia Business School, Finance and Imperial College Business School
Downloads 552 (97,957)
Citation 3

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12.

A Simple Model of Mergers and Innovation

CESifo Working Paper Series No. 6539
Number of pages: 15 Posted: 21 Jul 2017
Giulio Federico, Gregor Langus and Tommaso M. Valletti
Oxera Consulting LLP, ECA Economics GmbH and Imperial College Business School
Downloads 547 (99,151)
Citation 38

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innovation, R&D, mergers

13.

Buyer Power and the 'Waterbed Effect'

CEIS Research Paper No. 107
Number of pages: 27 Posted: 31 Mar 2008 Last Revised: 21 Feb 2014
Roman Inderst and Tommaso M. Valletti
Goethe University Frankfurt and Imperial College Business School
Downloads 514 (106,986)
Citation 3

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buyer power, retail concentration

14.

Testing the 'Waterbed' Effect in Mobile Telephony

Downloads 504 (109,604)
Citation 57

Testing the 'Waterbed' Effect in Mobile Telephony

CEIS Working Paper No. 110
Number of pages: 55 Posted: 03 Apr 2008
Christos Genakos and Tommaso M. Valletti
Cambridge University and Imperial College Business School
Downloads 494 (110,940)
Citation 5

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Testing the 'Waterbed' Effect in Mobile Telephony

CEPR Discussion Paper No. DP7611
Number of pages: 68 Posted: 11 Jan 2010
Christos Genakos and Tommaso M. Valletti
Cambridge University and Imperial College Business School
Downloads 10 (1,135,960)
Citation 16
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regulation, telephony, termination rates

15.

Attention Spillovers from News to Ads: Evidence from an Eye-Tracking Experiment

Number of pages: 88 Posted: 04 May 2021 Last Revised: 28 Feb 2023
Andrey Simonov, Tommaso M. Valletti and Andre Veiga
Columbia University - Columbia Business School, Imperial College Business School and Imperial College London
Downloads 502 (110,689)
Citation 2

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Online Advertising, Online News, Experiments, Attention, E-commerce

16.

The Interplay between Regulation and Competition: The Case of Universal Service Obligations

Number of pages: 20 Posted: 13 May 2002
Steffen Hoernig and Tommaso M. Valletti
Nova School of Business and Economics and Imperial College Business School
Downloads 497 (111,445)
Citation 1

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Universal Service Obligations, Regulation, Competition

17.

Should Profit Margins Play a More Decisive Role in Merger Control? - A Rejoinder to Jorge Padilla

Journal of European Competition Law & Practice, Vol. 9, No. 5, pp. 336-342, 2018
Number of pages: 14 Posted: 29 Apr 2018 Last Revised: 01 Jun 2018
Tommaso M. Valletti and Hans Zenger
Imperial College Business School and European Union - Directorate General for Competition
Downloads 468 (119,736)
Citation 3

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Merger Control, Margins, Competitive Effects

18.

Price Discrimination and Price Dispersion in a Duopoly

Number of pages: 39 Posted: 06 Nov 1998
Tommaso M. Valletti
Imperial College Business School
Downloads 427 (133,249)
Citation 1

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19.

Innovation Concerns in European Merger Control: The Agrochemical Saga (DOW/DuPont and Bayer/Monsanto)

Forthcoming In: Antitrust Economics at a Time of Upheaval By J. Kwoka, T. Valletti and L. White (Editors)
Number of pages: 22 Posted: 04 Nov 2022
Daniel Coublucq, David Kovo and Tommaso M. Valletti
Independent, Independent and Imperial College Business School
Downloads 419 (136,238)

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mergers, innovation

20.

Recent Developments at DG Competition: 2017/2018

Review of Industrial Organization, Vol. 53, No. 4, pp. 653-679, 2018
Number of pages: 27 Posted: 14 Nov 2018 Last Revised: 27 Nov 2018
Andrea Amelio, Thomas Buettner, Cyril Hariton, Gabor Koltay, Penelope Papandropoulos, Geza Sapi, Tommaso M. Valletti and Hans Zenger
European Union - Directorate General for Competition, Independent, Toulouse Business School, European Union - Directorate General for Competition, European Union - Directorate General for Competition, European Commission, DG Competition, Chief Economist's Team, Imperial College Business School and European Union - Directorate General for Competition
Downloads 414 (138,575)
Citation 1

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Competition Policy, Antitrust, Mergers, State Aid, Counterfactual, Google, Price Discrimination

21.

Evaluating Market Consolidation in Mobile Communications

Downloads 395 (145,812)
Citation 24

Evaluating Market Consolidation in Mobile Communications

CESifo Working Paper Series No. 6509
Number of pages: 72 Posted: 26 Jun 2017
Christos Genakos, Tommaso M. Valletti and Frank Verboven
Cambridge University, Imperial College Business School and KU Leuven
Downloads 392 (145,767)
Citation 9

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Mobile Telecommunications, Market Structure, Prices, Investments, Mergers

Evaluating Market Consolidation in Mobile Communications

CEPR Discussion Paper No. DP12054
Number of pages: 73 Posted: 22 May 2017
Christos Genakos, Tommaso M. Valletti and Frank Verboven
Cambridge University, Imperial College Business School and KU Leuven
Downloads 3 (1,220,230)
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Investments, market structure, mergers, Mobile telecommunications, prices

22.

Investments and Network Competition

Downloads 393 (146,615)
Citation 37

Investments and Network Competition

Number of pages: 38 Posted: 04 Jun 2003
Tommaso M. Valletti and Carlo Cambini
Imperial College Business School and Politecnico di Torino & EUI - Florence School of Regulation
Downloads 362 (159,375)
Citation 44

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Telecommunications, Interconnection, Two-way Access Charges, Investment, Quality

Investments and Network Competition

Number of pages: 37 Posted: 13 May 2003
Carlo Cambini and Tommaso M. Valletti
Politecnico di Torino & EUI - Florence School of Regulation and Imperial College Business School
Downloads 31 (906,440)
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Telecommunication, interconnection, two-way access charges, investment quality

23.

The Value of Personal Information in Markets with Endogenous Privacy

CEIS Working Paper No. 352
Number of pages: 40 Posted: 07 Aug 2015
Rodrigo Montes, Wilfried Sand‐Zantman and Tommaso M. Valletti
University of Toulouse 1 - Toulouse School of Economics (TSE), University of Toulouse 1 - Toulouse School of Economics (TSE) and Imperial College Business School
Downloads 382 (151,321)
Citation 84

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24.

Telecommunication Reforms, Access Regulation, and Internet Adoption in Latin America

Number of pages: 44 Posted: 20 Apr 2016
Antonio Estache, Marco Manacorda, Marco Manacorda and Tommaso M. Valletti
Université Libre de Bruxelles (ULB) - European Center for Advanced Research in Economics and Statistics (ECARES), London School of Economics & Political Science (LSE) - Centre for Economic Performance (CEP)Queen Mary, University of London and Imperial College Business School
Downloads 378 (153,167)

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25.

Statement by European Academics on the Inappropriateness of Imposing Increased Internet Regulation in the EU

Number of pages: 3 Posted: 19 Jan 2009
Martin E. Cave, N.A.N.M. van Eijk, Luigi Prosperetti, Richard Collins, Alexandre de Streel, Pierre Larouche and Tommaso M. Valletti
University of Warwick - Warwick Business School, affiliation not provided to SSRN, Law School - University of Milan, The Open University, University of Namur, Université de Montréal and Imperial College Business School
Downloads 366 (158,774)
Citation 3

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26.

Mobile Call Termination: A Tale of Two-Sided Markets

Communications & Strategies, No. 61, First Quarter 2006
Number of pages: 17 Posted: 11 Apr 2007
Tommaso M. Valletti
Imperial College Business School
Downloads 361 (161,179)

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mobile telephony, market definition and call termination

27.

Europe, Middle East, and North Africa (Emn) Region Population Projections: 1989-90 Edition

World Bank Policy Research Working Paper No. 328
Number of pages: 260 Posted: 20 Apr 2016
Tommaso M. Valletti, Rodolfo Andres Bulatao and Patience W. Stephens
Imperial College Business School, affiliation not provided to SSRN and affiliation not provided to SSRN
Downloads 355 (164,127)

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Health Information & Communications Technologies, Demographics, Health Indicators, Health Monitoring & Evaluation

28.

Parallel Trade, International Exhaustion and Intellectual Property Rights: A Welfare Analysis

Downloads 348 (167,694)
Citation 6

Parallel Trade, International Exhaustion and Intellectual Property Rights: A Welfare Analysis

Journal of Industrial Economics, Forthcoming
Number of pages: 32 Posted: 03 Oct 2006
Tommaso M. Valletti and Stefan Szymanski
Imperial College Business School and Imperial College London - Imperial College of Science, Technology and Medicine
Downloads 324 (179,766)
Citation 1

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Parallel trade, price discrimination, investments

Parallel Trade, International Exhaustion and Intellectual Property Rights: A Welfare Analysis

CEPR Discussion Paper No. 5022
Number of pages: 36 Posted: 24 Aug 2005
Stefan Szymanski and Tommaso M. Valletti
Imperial College London - Imperial College of Science, Technology and Medicine and Imperial College Business School
Downloads 24 (975,409)
Citation 2
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Parallel trade, price discrimination, investments

29.

Two-Part Access Pricing and Imperfect Competition

Downloads 313 (187,712)

Two-Part Access Pricing and Imperfect Competition

Number of pages: 25 Posted: 06 Nov 1998
Tommaso M. Valletti
Imperial College Business School
Downloads 313 (186,396)

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Two-Part Access Pricing and Imperfect Competition

Information Economics & Policy, Vol. 10, 1998
Posted: 03 Dec 1998
Tommaso M. Valletti
Imperial College Business School

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30.

Innovation Considerations in Horizontal Merger Control

Journal of Antitrust Enforcement, 2020; 16 (2): 220–261
Number of pages: 23 Posted: 16 Nov 2021
Ioannis Kokkoris and Tommaso M. Valletti
Queen Mary University of London and Imperial College Business School
Downloads 312 (188,312)
Citation 3

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Merger control, innovation, market definition, markets

31.

Price Discrimination in Input Markets

Number of pages: 43 Posted: 21 Mar 2006
Roman Inderst and Tommaso M. Valletti
Goethe University Frankfurt and Imperial College Business School
Downloads 310 (189,651)
Citation 35

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Price Discrimination, Uniform Pricing, Input Market

32.

Consumer Profiling with Data Requirements: Structure and Policy Implications

Number of pages: 52 Posted: 09 Apr 2016 Last Revised: 18 Sep 2019
Tommaso M. Valletti and Jiahua Wu
Imperial College Business School and Imperial College Business School
Downloads 304 (193,695)
Citation 6

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profiling, privacy, price discrimination, signal accuracy, big data

33.

Internet and Politics: Evidence from U.K. Local Elections and Local Government Policies

Downloads 294 (200,639)
Citation 56

Internet and Politics: Evidence from U.K. Local Elections and Local Government Policies

Number of pages: 52 Posted: 08 Dec 2015 Last Revised: 20 Feb 2018
Alessandro Gavazza, Mattia Nardotto and Tommaso M. Valletti
London School of Economics & Political Science (LSE) - Department of Economics, KU Leuven and Imperial College Business School
Downloads 293 (200,075)
Citation 53

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Voting, Media, Internet

Internet and Politics: Evidence from U.K. Local Elections and Local Government Policies

CEPR Discussion Paper No. DP10991
Number of pages: 54 Posted: 20 Sep 2017 Last Revised: 05 Mar 2018
Alessandro Gavazza, Mattia Nardotto and Tommaso M. Valletti
London School of Economics & Political Science (LSE) - Department of Economics, KU Leuven and Imperial College Business School
Downloads 1 (1,248,433)
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media, voting

34.

Net Neutrality, Exclusivity Contracts and Internet Fragmentation

Information Systems Research, Forthcoming
Number of pages: 93 Posted: 21 Dec 2014
Frago Kourandi, Jan Kraemer and Tommaso M. Valletti
National and Kapodistrian University of Athens - Department of Economics, University of Passau and Imperial College Business School
Downloads 261 (226,404)
Citation 2

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Net neutrality; Internet fragmentation; Exclusivity

35.

Vertical Bargaining and Countervailing Power

CEIS Working Paper No. 160
Number of pages: 27 Posted: 03 Mar 2010 Last Revised: 25 Feb 2014
Alberto Iozzi and Tommaso M. Valletti
Universita degli Studi di Roma and Imperial College Business School
Downloads 215 (273,036)
Citation 16

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Countervailing buyer power, Nash bargaining

36.

Network Competition and Entry Deterrence

Downloads 212 (276,607)
Citation 34

Network Competition and Entry Deterrence

Number of pages: 23 Posted: 03 Oct 2006
Joan Calzada and Tommaso M. Valletti
Universitat de Barcelona and Imperial College Business School
Downloads 186 (311,141)
Citation 7

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Telecommunications, Interconnection, Entry deterrence

Network Competition and Entry Deterrence

CEPR Discussion Paper No. 5381
Number of pages: 25 Posted: 22 Feb 2006
Tommaso M. Valletti and Joan Calzada
Imperial College Business School and Universitat de Barcelona
Downloads 26 (954,707)
Citation 6
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Telecommunications, interconnection, entry deterrence

37.

Market Structure, Countervailing Power and Price Discrimination: The Case of Airports

Downloads 201 (290,598)
Citation 4

Market Structure, Countervailing Power and Price Discrimination: The Case of Airports

CEIS Working Paper No. 177
Number of pages: 34 Posted: 10 Dec 2010
Jonathan Haskel, Alberto Iozzi and Tommaso M. Valletti
Imperial College Business School, Universita degli Studi di Roma and Imperial College Business School
Downloads 197 (295,109)
Citation 1

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Airports, Airlines, Landing Fees, Countervailing Power

Market Structure, Countervailing Power and Price Discrimination: The Case of Airports

CEPR Discussion Paper No. DP8280
Number of pages: 33 Posted: 14 Mar 2011
Jonathan Haskel, Alberto Iozzi and Tommaso M. Valletti
Imperial College Business School, Universita degli Studi di Roma and Imperial College Business School
Downloads 4 (1,207,582)
Citation 1
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Airlines, Airports, Countervailing power, Landing fees

38.

Firm Size Distribution: Testing the 'Independent Submarkets Model' in the Italian Motor Insurance Industry

Downloads 184 (314,620)
Citation 4

Firm Size Distribution: Testing the 'Independent Submarkets Model' in the Italian Motor Insurance Industry

STICERD, London School of Economics Discussion Paper Series, EI/24
Number of pages: 36 Posted: 05 Sep 2000
Tommaso M. Valletti and Luigi Buzzacchi
Imperial College Business School and Polytechnic University of Turin
Downloads 168 (340,958)

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Size distribution of firms, Independent submarkets, Insurance companies, Price dispersion

Firm Size Distribution: Testing the 'Independent Submarkets Model' in the Italian Motor Insurance Industry

Number of pages: 39 Posted: 03 Sep 2002
Luigi Buzzacchi and Tommaso M. Valletti
Polytechnic University of Turin and Imperial College Business School
Downloads 16 (1,065,200)
Citation 1
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Size distribution of firms, independent submarkets, insurance companies, price dispersion

39.

Platform Pricing and Consumer Foresight: The Case of Airports

CEIS Working Paper No. 335
Number of pages: 35 Posted: 27 Mar 2015
Ricardo Flores-Fillol, Alberto Iozzi and Tommaso M. Valletti
Universitat Rovira i Virgili (URV), Universita degli Studi di Roma and Imperial College Business School
Downloads 183 (316,163)
Citation 10

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two-sided markets, platform pricing, one-way demand complementarity, consumer foresight.

40.

Differential Pricing, Parallel Trade, and the Incentive to Invest

Journal of International Economics, Vol. 70, 2006
Number of pages: 16 Posted: 03 Oct 2006
Tommaso M. Valletti
Imperial College Business School
Downloads 182 (317,761)
Citation 6

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price discrimination, parallel trade, investment

41.

Reassessing Competition Concerns in Electronic Communications Markets

ZEW - Centre for European Economic Research Discussion Paper No. 14-101
Number of pages: 30 Posted: 15 Dec 2014
Martin Peitz and Tommaso M. Valletti
University of Mannheim - Department of Economics and Imperial College Business School
Downloads 176 (327,507)
Citation 3

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Telecommunications, OTT, relevant market, two-sided markets, market power

42.

Designing Digital Rollovers: Managing Perceived Obsolescence through Release Times

Production and Operations Management (forthcoming)
Number of pages: 56 Posted: 18 Mar 2020 Last Revised: 28 Apr 2021
Esma Koca, Tommaso M. Valletti and Wolfram Wiesemann
Imperial College Business School, Imperial College Business School and Imperial College Business School
Downloads 174 (330,887)
Citation 2

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Product Rollover, Version Management, Perceived Obsolescence, Release Time

43.

Privacy, Adoption, and Truthful Reporting: A Simple Theory of Contact Tracing Applications

Economics Letters, Forthcoming
Number of pages: 13 Posted: 12 Sep 2020 Last Revised: 24 Nov 2020
Yves-Alexandre de Montjoye, Tarun Ramadorai, Tommaso M. Valletti and Ansgar Walther
Imperial College London - Department of Computing, Imperial College London, Imperial College Business School and Imperial College London
Downloads 171 (335,944)
Citation 1

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pandemic, COVID-19, coronavirus, contact tracing, privacy, truthful reporting, public health

44.

Unbundling the Incumbent: Evidence from UK Broadband

CEIS Working Paper No. 331
Number of pages: 40 Posted: 05 Oct 2014 Last Revised: 21 Mar 2015
Mattia Nardotto, Tommaso M. Valletti and Frank Verboven
KU Leuven, Imperial College Business School and KU Leuven - Faculty of Business and Economics (FEB)
Downloads 171 (335,944)
Citation 26

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regulation, competition, entry, telecommunications, broadband, local loop unbundling

45.

Competition in Communication Networks: Pricing and Regulation

Oxford Review of Economic Policy, Vol. 17, No. 3, 2001
Number of pages: 42 Posted: 06 Oct 2003
Robin A. Mason and Tommaso M. Valletti
University of Southampton - Division of Economics and Imperial College Business School
Downloads 168 (341,187)

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46.

Speed 2.0: Evaluating Access to Universal Digital Highways

Downloads 164 (348,269)
Citation 25

Speed 2.0: Evaluating Access to Universal Digital Highways

CEIS Working Paper No. 328
Number of pages: 50 Posted: 07 Sep 2014
Gabriel M. Ahlfeldt, Pantelis Koutroumpis and Tommaso M. Valletti
London School of Economics & Political Science (LSE) - Department of Geography and Environment, Oxford Martin Programme of Technological and Economic Change and Imperial College Business School
Downloads 98 (520,777)
Citation 10

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Internet, property prices, capitalization, digital speed, universal access to broadband

Speed 2.0 - Evaluating Access to Universal Digital Highways

CESifo Working Paper Series No. 5186
Number of pages: 49 Posted: 05 Feb 2015
Gabriel M. Ahlfeldt, Pantelis Koutroumpis and Tommaso M. Valletti
London School of Economics & Political Science (LSE) - Department of Geography and Environment, Oxford Martin Programme of Technological and Economic Change and Imperial College Business School
Downloads 64 (672,227)
Citation 16

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internet, property prices, capitalization, digital speed, universal access to broadband

Speed 2.0 - Evaluating Access to Universal Digital Highways

CEPR Discussion Paper No. DP11046
Number of pages: 62 Posted: 20 Jan 2016
Gabriel M. Ahlfeldt, Pantelis Koutroumpis and Tommaso M. Valletti
London School of Economics & Political Science (LSE) - Department of Geography and Environment, Oxford Martin Programme of Technological and Economic Change and Imperial College Business School
Downloads 2 (1,233,778)
Citation 6
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capitalization, digital speed, Internet, property prices, universal access to broadband

47.

Exclusionary Pricing in Two-Sided Markets

Downloads 155 (363,188)
Citation 5

Exclusionary Pricing in Two-Sided Markets

International Journal of Industrial Organization, Forthcoming
Number of pages: 39 Posted: 16 Mar 2020
Andrea Amelio, Liliane Karlinger and Tommaso M. Valletti
European Union - Directorate General for Competition, European Commission - Directorate General for Competition and Imperial College Business School
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Limit pricing, two-sided markets, platforms, entry deterrence, monopolisation

48.

Intertemporal Movie Distribution: Versioning When Customers Can Buy Both Versions

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Citation 13

Intertemporal Movie Distribution: Versioning When Customers Can Buy Both Versions

CEIS Working Paper No. 198
Number of pages: 44 Posted: 28 Jun 2011
Joan Calzada and Tommaso M. Valletti
Universitat de Barcelona and Imperial College Business School
Downloads 149 (377,479)

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Product segmentation, versioning, sequential introduction, distribution channels, movie industry, information goods

Intertemporal Movie Distribution: Versioning When Customers can Buy Both Versions

CEPR Discussion Paper No. DP8279
Number of pages: 45 Posted: 14 Mar 2011
Joan Calzada and Tommaso M. Valletti
Universitat de Barcelona and Imperial College Business School
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Citation 4
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Distribution channels, Information goods, Movie industry, Product segmentation, Sequential release, Versioning

Intertemporal Movie Distribution: Versioning When Customers Can Buy Both Versions

Marketing Science, Forthcoming
Posted: 09 Mar 2012
Joan Calzada and Tommaso M. Valletti
Universitat de Barcelona and Imperial College Business School

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Product segmentation, versioning, sequencing, distribution channels, movie industry, information goods

Intertemporal Movie Distribution: Versioning When Customers Can Buy Both Versions

Marketing Science, Vol. 31, No. 4, pp. 649-667, 2012, DOI: 10.1287/mksc.1120.0716
Posted: 23 Oct 2012
Joan Calzada and Tommaso M. Valletti
Universitat de Barcelona and Imperial College Business School

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product segmentation, versioning, sequencing, distribution channels, movie industry, information goods

49.

Towards an Effective Merger Review Policy: A Defence of Rebuttable Structural Presumptions

Number of pages: 21
Filippo Lancieri and Tommaso M. Valletti
Georgetown University Law Center and Imperial College Business School
Downloads 137

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50.

Seesaw in the Air: Interconnection Regulation and the Structure of Mobile Tariffs

Number of pages: 30 Posted: 05 Oct 2010
Christos Genakos and Tommaso M. Valletti
Cambridge University and Imperial College Business School
Downloads 128 (424,879)
Citation 1

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Interconnection, Network Competition, Regulation, Mobile Phones

51.

Testing the 'Waterbed' Effect in Mobile Telephony

Journal of the European Economic Association (Vol. 9, Issue 6, pp. 1114-1142), 2011
Number of pages: 45 Posted: 19 Jan 2016
Christos Genakos and Tommaso M. Valletti
University of Cambridge, Cambridge Judge Business School and Imperial College Business School
Downloads 126 (430,065)

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Waterbed effect, Regulation, Termination rates, mobile telephony

52.

Calling Circles: Network Competition with Non-Uniform Calling Patterns

Downloads 119 (449,074)
Citation 16

Calling Circles: Network Competition with Non-Uniform Calling Patterns

CEIS Working Paper No. 206
Number of pages: 38 Posted: 18 Jul 2011
Steffen Hoernig, Roman Inderst and Tommaso M. Valletti
Nova School of Business and Economics, Goethe University Frankfurt and Imperial College Business School
Downloads 114 (466,214)
Citation 7

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Network competition, non-uniform calling patterns, termination charge

Calling Circles: Network Competition with Non-Uniform Calling Patterns

CEPR Discussion Paper No. DP8114
Number of pages: 32 Posted: 29 Nov 2010
Steffen Hoernig, Roman Inderst and Tommaso M. Valletti
Nova School of Business and Economics, Goethe University Frankfurt and Imperial College Business School
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Citation 2
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Network competition, Non-uniform calling patterns, Termination charges

53.

Net Neutrality: A Fast Lane to Understanding the Trade-Offs

NBER Working Paper No. w21950
Number of pages: 32 Posted: 01 Feb 2016 Last Revised: 24 Jun 2023
Shane M. Greenstein, Shane M. Greenstein, Martin Peitz and Tommaso M. Valletti
National Bureau of Economic Research (NBER)Harvard University - Technology & Operations Management Unit, University of Mannheim - Department of Economics and Imperial College Business School
Downloads 114 (463,802)
Citation 16

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54.

Evaluating a Decade of Mobile Termination Rate Regulation

CEIS Working Paper No. 303
Number of pages: 30 Posted: 11 Jan 2014 Last Revised: 17 Feb 2015
Christos Genakos and Tommaso M. Valletti
University of Cambridge, Cambridge Judge Business School and Imperial College Business School
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Citation 6

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55.

Internet and Politics: Evidence from U.K. Local Elections and Local Government Policies

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Citation 2

Internet and Politics: Evidence from U.K. Local Elections and Local Government Policies

DIW Berlin Discussion Paper No. 1691
Number of pages: 52 Posted: 20 Oct 2017
Alessandro Gavazza, Mattia Nardotto and Tommaso M. Valletti
London School of Economics, KU Leuven and Imperial College Business School
Downloads 62 (683,335)
Citation 2

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Internet, newspaper, media, elections, policy

Internet and Politics: Evidence from U.K. Local Elections and Local Government Policies

CESifo Working Paper Series No. 6659
Number of pages: 52 Posted: 24 Oct 2017
Alessandro Gavazza, Mattia Nardotto and Tommaso M. Valletti
London School of Economics, KU Leuven and Imperial College Business School
Downloads 41 (821,377)
Citation 1

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56.

Mixing Goods with Two-Part Tariffs

Number of pages: 24 Posted: 03 Oct 2006
Steffen Hoernig and Tommaso M. Valletti
Nova School of Business and Economics and Imperial College Business School
Downloads 85 (564,934)
Citation 2

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Two-part tariffs, flat fees, combinable products, pay-per-view

57.

Seesaw in the Air: Interconnection Regulation and the Structure of Mobile Tariffs

Information, Economics and Policy (Vol. 23, n. 2, pp. 159-170), 2011
Number of pages: 30 Posted: 19 Jan 2016
Christos Genakos and Tommaso M. Valletti
University of Cambridge, Cambridge Judge Business School and Imperial College Business School
Downloads 70 (630,432)
Citation 1

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Mobile telephony, termination rates, two-way access charges, regulation

58.

Mergers, Lobbying, and Elections: Is there a "Curse of Bigness"?

Number of pages: 47 Posted: 12 Jul 2024
Matteo Broso and Tommaso M. Valletti
University of Turin - Collegio Carlo Alberto and Imperial College Business School
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Lobbying, Political Agency, Mergers and Acquisitions, Antitrust JEL Classification P16, L41, D72, G34

59.

Regulating Prices in Two-Sided Markets: The Waterbed Experience in Mobile Telephony

Telecommunications Policy (2012, Vol. 36, Issue 5, pp. 360-368)
Number of pages: 19 Posted: 19 Jan 2016
Christos Genakos and Tommaso M. Valletti
University of Cambridge, Cambridge Judge Business School and Imperial College Business School
Downloads 54 (715,004)
Citation 5

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Mobile telephony, two-sided markets, termination rates, waterbed effect

60.

Is Having an Expert “Friend” Enough? An Analysis of Consumer Switching Behavior in Mobile Telephony

Number of pages: 47 Posted: 16 Jul 2022
Christos Genakos, Costas Roumanias and Tommaso M. Valletti
University of Cambridge, Cambridge Judge Business School, Athens University of Economics and Business and Imperial College Business School
Downloads 44 (779,151)

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tariff/plan choice, inertia, switching, loss aversion, mobile telephony

61.

Content and Advertising in the Media: Pay-Tv Versus Free-to-Air

Number of pages: 36 Posted: 15 Feb 2005
Martin Peitz and Tommaso M. Valletti
University of Mannheim - Department of Economics and Imperial College Business School
Downloads 35 (846,959)
Citation 26
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Advertising, media, product differentiation, two-sided markets

62.

Mixing Media with Two-Part Tariffs

CEPR Discussion Paper No. 5437
Number of pages: 21 Posted: 17 Apr 2006
Tommaso M. Valletti and Steffen Hoernig
Imperial College Business School and Nova School of Business and Economics
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Two-part tariffs, pay-per-view, flat fees, combinable products

63.

First and Second Prizes in Imperfectly Discriminating Contests

Number of pages: 25 Posted: 12 Aug 2004
Stefan Szymanski and Tommaso M. Valletti
Imperial College London - Imperial College of Science, Technology and Medicine and Imperial College Business School
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Imperfectly discriminating (logit) contests, prizes

64.

Input Price Discrimination with Downstream Cournot Competitors

Number of pages: 22 Posted: 01 Nov 2002
Tommaso M. Valletti
Imperial College Business School
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Citation 11
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input price discrimination

65.

Universal Service and Entry: The Role of Uniform Pricing and Coverage Constraints

Number of pages: 30 Posted: 14 May 2001
Tommaso M. Valletti, Steffen Hoernig and Pedro P. Barros
Imperial College Business School, Nova School of Business and Economics and Universidade Nova de Lisboa
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Citation 2
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Competition, coverage constraint, uniform pricing constraint, universal service

66.

Information Exchange and Competition in Communications Networks

CEPR Discussion Paper No. 5031
Number of pages: 45 Posted: 12 Sep 2005
Carlo Cambini and Tommaso M. Valletti
Politecnico di Torino & EUI - Florence School of Regulation and Imperial College Business School
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Citation 6
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Interconnection, access charges, reception charges, bill-and-keep, information exchange

67.

Towards an Effective Merger Review Policy: A Defence of Rebuttable Structural Presumptions

George J. Stigler Center for the Study of the Economy & the State Working Paper No. 345
Number of pages: 22 Posted: 18 Sep 2024
Filippo Lancieri and Tommaso M. Valletti
Georgetown University Law Center and Imperial College Business School
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68.

Horizontal Mergers and Product Innovation

CEPR Discussion Paper No. DP12759
Number of pages: 23 Posted: 06 Mar 2018
Giulio Federico, Gregor Langus and Tommaso M. Valletti
Oxera Consulting LLP, ECA Economics GmbH and Imperial College Business School
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Citation 44
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Innovation, mergers, R&D

69.

When Two-Part Tariffs are Not Enough: Mixing with Nonlinear Pricing

CEPR Discussion Paper No. DP7720
Number of pages: 27 Posted: 09 Mar 2010
Steffen Hoernig and Tommaso M. Valletti
Nova School of Business and Economics and Imperial College Business School
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Exclusivity, Mixing goods, Nonlinear tariffs, Two-part tariffs

70.

Active and Passive Waste in Government Spending: Evidence from a Policy Experiment

CEPR Discussion Paper No. DP6799
Number of pages: 63 Posted: 12 Jun 2008
Oriana Bandiera, Andrea Prat and Tommaso M. Valletti
London School of Economics & Political Science (LSE) - Suntory and Toyota International Centres for Economics and Related Disciplines (STICERD), Columbia University - Columbia Business School, Finance and Imperial College Business School
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Citation 23
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government spending, waste

71.

Mortgage Market Disruptions

CEPR Discussion Paper No. DP15381
Number of pages: 31 Posted: 03 Nov 2020
Philippe Bracke, Karen Croxson, Daoud Fakhri, Paolo Surico and Tommaso M. Valletti
Financial Conduct Authority, Financial Conduct Authority, affiliation not provided to SSRN, London Business School and Imperial College Business School
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Citation 5
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Covid pandemic, credit supply, financial crisis, mortgage originations

72.

Market Analysis in the Presence of Indirect Constraints and Captive Sales

Journal of Competition Law and Economics, Vol. 3, Issue 2, pp. 203-231, 2007
Posted: 14 Jul 2008
Roman Inderst and Tommaso M. Valletti
Goethe University Frankfurt and Imperial College Business School

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