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

SCHOLARLY PAPERS

72

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19,818

SSRN CITATIONS
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Top 882

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464

CROSSREF CITATIONS

801

Scholarly Papers (72)

1.
Downloads 2,469 ( 8,024)
Citation 21

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 2,469 (7,891)
Citation 26

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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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2.

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: 27 Apr 2021
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 – Questrom School of Business
Downloads 1,808 (13,271)

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Digital Markets Act, Regulation, Competition Policy, Digital Platforms

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
Chief Economist Team, DG Competition, European Commission, ECA Economics GmbH and Imperial College Business School
Downloads 1,090 (28,425)
Citation 9

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Mergers, innovation, efficiencies

4.

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 877 (38,714)
Citation 5

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increasing market power, merger control, potential competition

5.

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 847 (40,552)
Citation 3

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antitrust, breakups, merger, Big Tech

6.
Downloads 752 ( 47,586)
Citation 27

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 423 (96,808)
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 323 (131,143)

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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 (898,760)
Citation 5
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Innovation, Investment, Net neutrality, Platform competition, Two-sided markets

Net Neutrality with Competing Internet Platforms

The Journal of Industrial Economics, Vol. 63, Issue 1, pp. 30-73, 2015
Number of pages: 44 Posted: 31 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 3 (898,760)
Citation 1

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7.

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 719 (50,484)

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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 446 (91,014)

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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 139 (287,716)

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mergers, antitrust, European Union, concentrations, industries

9.

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 478 (84,569)
Citation 1

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Universal Service Obligations, Regulation, Competition

10.
Downloads 475 ( 85,203)
Citation 53

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 468 (85,937)
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 7 (851,305)
Citation 12
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regulation, telephony, termination rates

11.

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 443 (92,507)
Citation 3

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buyer power, retail concentration

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 413 (99,492)
Citation 3

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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
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differentiated products, mergers, Unilateral Effects

13.

Price Discrimination and Price Dispersion in a Duopoly

Number of pages: 39 Posted: 06 Nov 1998
Tommaso M. Valletti
Imperial College Business School
Downloads 405 (102,573)
Citation 1

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14.

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
Chief Economist Team, DG Competition, European Commission, ECA Economics GmbH and Imperial College Business School
Downloads 401 (103,800)
Citation 27

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innovation, R&D, mergers

15.

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 399 (104,418)
Citation 3

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16.
Downloads 372 (113,037)
Citation 35

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 341 (123,795)
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 (639,178)
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Telecommunication, interconnection, two-way access charges, investment quality

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 360 (117,320)
Citation 3

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Merger Control, Margins, Competitive Effects

18.

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 360 (117,320)

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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 294 (144,761)
Citation 1

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Parallel trade, price discrimination, investments

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

Journal of Industrial Economics, Vol. 54, No. 4, pp. 499-526, December 2006
Number of pages: 28 Posted: 15 Dec 2006
Tommaso M. Valletti and Stefan Szymanski
Imperial College Business School and Imperial College London - Imperial College of Science, Technology and Medicine
Downloads 25 (682,882)
Citation 5

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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 (690,843)
Citation 1
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Parallel trade, price discrimination, investments

20.

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 338 (125,732)

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mobile telephony, market definition and call termination

21.

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
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 326 (130,652)
Citation 1

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

22.

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 326 (130,652)

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

23.

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

Number of pages: 3 Posted: 19 Jan 2009
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 326 (130,652)
Citation 3

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24.

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 322 (132,323)
Citation 39

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Two-Part Access Pricing and Imperfect Competition

Number of pages: 25 Posted: 06 Nov 1998
Tommaso M. Valletti
Imperial College Business School
Downloads 297 (143,252)

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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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26.

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 275 (155,717)
Citation 25

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Price Discrimination, Uniform Pricing, Input Market

27.

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 270 (158,720)
Citation 3

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

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 248 (172,040)
Citation 29

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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 (930,046)
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media, voting

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 219 (194,163)
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 (898,760)
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Investments, market structure, mergers, Mobile telecommunications, prices

30.

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 215 (197,738)
Citation 2

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Net neutrality; Internet fragmentation; Exclusivity

31.
Downloads 189 (222,298)
Citation 32

Network Competition and Entry Deterrence

Number of pages: 23 Posted: 03 Oct 2006
Joan Calzada and Tommaso M. Valletti
University of Barcelona - Department of Political Economics and Imperial College Business School
Downloads 165 (249,926)
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 University of Barcelona - Department of Political Economics
Downloads 24 (690,843)
Citation 6
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Telecommunications, interconnection, entry deterrence

32.

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 184 (227,500)
Citation 16

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Countervailing buyer power, Nash bargaining

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 172 (241,283)
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 (885,825)
Citation 1
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Airlines, Airports, Countervailing power, Landing fees

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 165 (249,926)
Citation 10

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

Platform Pricing and Consumer Foresight: The Case of Airports

Journal of Economics & Management Strategy, Vol. 27, Issue 4, pp. 705-725, 2018
Number of pages: 21 Posted: 29 Oct 2018
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 2 (913,434)
Citation 3

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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 150 (270,669)

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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 (759,677)
Citation 1
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Size distribution of firms, independent submarkets, insurance companies, price dispersion

36.

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 156 (261,585)
Citation 2

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price discrimination, parallel trade, investment

37.

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 153 (265,626)
Citation 26

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

38.

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 148 (272,861)

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39.

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 140 (285,035)

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Product Rollover, Version Management, Perceived Obsolescence, Release Time

40.

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 133 (296,457)
Citation 3

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

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
University of Barcelona - Department of Political Economics and Imperial College Business School
Downloads 122 (317,668)

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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
University of Barcelona - Department of Political Economics and Imperial College Business School
Downloads 5 (873,645)
Citation 2
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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
University of Barcelona - Department of Political Economics 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
University of Barcelona - Department of Political Economics and Imperial College Business School

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

42.

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
Imperial College London - Department of Computing, Imperial College London, Imperial College Business School and Imperial College London
Downloads 125 (310,590)

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

43.
Downloads 123 (312,444)
Citation 4

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
Downloads 123 (315,815)

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Limit pricing, two-sided markets, platforms, entry deterrence, monopolisation

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 69 (456,103)
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 49 (538,286)
Citation 1

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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 (913,434)
Citation 6
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capitalization, digital speed, Internet, property prices, universal access to broadband

45.

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 107 (346,396)

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Interconnection, Network Competition, Regulation, Mobile Phones

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 89 (393,234)
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
Downloads 5 (873,645)
Citation 2
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Network competition, Non-uniform calling patterns, Termination charges

47.

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 93 (379,297)

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Merger control, innovation, market definition, markets

48.

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
Downloads 85 (400,746)
Citation 2

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49.

News Content and Advertising Effectiveness: Evidence from an Eye-Tracking Experiment

Number of pages: 50 Posted: 04 May 2021 Last Revised: 22 Feb 2022
Andrey Simonov, Tommaso M. Valletti and Andre Veiga
Columbia University - Columbia Business School, Imperial College Business School and Imperial College London
Downloads 83 (406,404)
Citation 1

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

50.

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 2022
National Bureau of Economic Research (NBER)Harvard University - Technology & Operations Management Unit, University of Mannheim - Department of Economics and Imperial College Business School
Downloads 81 (412,175)
Citation 11

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51.

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 69 (450,350)
Citation 1

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

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 & Political Science (LSE) - London School of Economics, KU Leuven and Imperial College Business School
Downloads 37 (601,594)
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 & Political Science (LSE) - London School of Economics, KU Leuven and Imperial College Business School
Downloads 19 (732,754)
Citation 1

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53.

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 38 (582,679)

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Waterbed effect, Regulation, Termination rates, mobile telephony

54.

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 (599,388)
Citation 14
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Advertising, media, product differentiation, two-sided markets

55.

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 30 (629,464)
Citation 3

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

56.

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

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

Information Exchange and Competition in Communications Networks

The Journal of Industrial Economics, Vol. 56, Issue 4, pp. 707-728, December 2008
Number of pages: 22 Posted: 02 Jan 2009
Carlo Cambini and Tommaso M. Valletti
Politecnico di Torino & EUI - Florence School of Regulation and Imperial College Business School
Downloads 3 (898,760)

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58.

Firm Size Distribution in Small Samples

Number of pages: 10 Posted: 08 Oct 2004
Luigi Buzzacchi and Tommaso M. Valletti
Polytechnic University of Turin and Imperial College Business School
Downloads 21 (693,717)

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59.

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

60.

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 5
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input price discrimination

61.

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

62.

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 15 (742,922)
Citation 1

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

63.

Book Reviews

Number of pages: 8 Posted: 09 Jul 2003
Dennis C. Mueller, Tommaso M. Valletti, Walter Eltis and Ronald Schettkat
University of Vienna - Center for Business Studies - Department of Economics, Imperial College Business School, University of Oxford and University of Wuppertal - Department of Economics
Downloads 14 (751,856)

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64.

Buyer Power and the Waterbed Effect

The Journal of Industrial Economics, Vol. 59, Issue 1, pp. 1-20, 2011
Number of pages: 20 Posted: 28 Mar 2011
Roman Inderst and Tommaso M. Valletti
Goethe University Frankfurt and Imperial College Business School
Downloads 5 (839,968)
Citation 15

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65.

Indirect Versus Direct Constraints in Markets with Vertical Integration

Scandinavian Journal of Economics, Vol. 111, Issue 3, pp. 527-546, September 2009
Number of pages: 20 Posted: 15 Oct 2009
Roman Inderst and Tommaso M. Valletti
Goethe University Frankfurt and Imperial College Business School
Downloads 5 (839,968)

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66.

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
Chief Economist Team, DG Competition, European Commission, ECA Economics GmbH and Imperial College Business School
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Citation 30
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Innovation, mergers, R&D

67.

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

68.

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
Downloads 2 (875,625)
Citation 23
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government spending, waste

69.

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

70.

Mortgage Market Disruptions

CEPR Discussion Paper No. DP15381
Number of pages: 31 Posted: 03 Nov 2020
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

71.

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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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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