We present an empirical investigation of the role of marketing agencies in Google's online ad auctions. By combining data on advertisers' affiliation to marketing agencies with data on bidding in ad auctions, we analyze how changes in the concentration of clients in the same industry under the...

Despite successive reforms, public procurement in Italy is still highly fragmented and vulnerable to collusion, corruption and ex-post renegotiation. Other defects are found in the planning stages of the works. These problems are due in part to the regulations on the awarding of public works...

The presence of a pervasive and evolving local regulation in the Italian public procurement offers a way to study the effects of a vast series of reforms involving firms qualifications, contracts awarding and subcontracting. This paper documents the legal aspects of these local regulations and,...

This paper shows how favoritism in public procurement can emerge despite the use of rigid procedures for awarding contracts and of transparent criteria for allowing firms to bid. The paper analyzes data on the awarding of public works in Italy to illustrate how differences in fine regulation...

This paper presents evidence on the perverse trade-off that first price auctions induce between low prices at the awarding stage and poor ex post performance when bids are not binding commitments. By exploiting the different timing with which first price auctions were introduced in Italy to...