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cc-by-nc-nd, (c) Perdiguero et al., 2012
Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/58307

Mergers and difference-in-difference estimator : why firms do not increase prices?

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Difference-in-Difference (DiD) methods are being increasingly used to analyze the impact of mergers on pricing and other market equilibrium outcomes. Using evidence from an exogenous merger between two retail gasoline companies in a specific market in Spain, this paper shows how concentration did not lead to a price increase. In fact, the conjectural variation model concludes that the existence of a collusive agreement before and after the merger accounts for this result, rather than the existence of efficient gains. This result may explain empirical evidence reported in the literature according to which mergers between firms do not have significant effects on prices.

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PERDIGUERO, Jordi and JIMÉNEZ GONZÁLEZ, Juan Luis. Mergers and difference-in-difference estimator : why firms do not increase prices?. IREA – Working Papers. 2012. Vol.  IR12/05. ISSN 2014-1254. [consulted: 20 of August of 2026]. Available at: https://hdl.handle.net/2445/58307

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