Italy Fainmesser II

Itay Fainmesser, PhD

Associate Professor
Academic AreaEconomics
Academic AreaMarketing

Itay Fainmesser joined Johns Hopkins Carey Business School in 2014. Professor Fainmesser studies how social networks and social media affect and are affected by market activities and market rules. His current work studies the pricing of network goods, the role of intermediaries in markets, the shape and evolution of trust networks, the market for online influence, and user privacy in online platforms.


  • Ph. D, Business Economics, Harvard University
  • MA, Economics, Harvard University
  • MA, Economics, Tel Aviv University
  • B.Sc, Computer Science and Economics, Tel Aviv University


Selected publications

Working Papers

  • Digital Privacy (with Andrea Galeotti and Ruslan Momot)
  • Ratings, Reviews, and the Marketing of New Products (with Dominique Lauga and Elie Ofek)
  • The Market for Online Influence (with Andrea Galeotti)



  • Economics for Decision Making
  • Competitive Strategy

In the media

  • Les influenceurs courent à leur perte selon le modèle mathématique d’un économiste, La Réclame — 5/6/2019
  • Advertising regulations harm social media influencers, followers, and marketers alike, HUB Daily — 4/15/2019
  • Under the Influence, Changing Business Magazine — 3/19/2019
  • How transparency is damaging social media marketing, London Business School Review — 11/20/2018