contribute, on average, 20% of the total merger value added. Moreover, we find that multimarket efficiency gains dominate …

We analyse the effects of investment decisions and firms internal organisation on the efficiency and stability of …. We show that often stable mergers do not lead to more e.ciency and may even lead to efficiency losses. These mergers lead … to lower total welfare, suggesting that a regulator should be careful in assuming that possible efficiency gains of a …

We study upstream horizontal mergers and their potential efficiency gains. We show that an upstream horizontal merger … can give rise to two efficiency-enhancing effects when firms trade through two-part tariffs. It increases R&D investments … efficiency gains can overcome its anti-competitive effects in terms of welfare, we show that when firms merge usually both of the …