Theory on high-frequency traders (HFT) predicts that market liquidity for a security decreases in the number of HFT trading the security. We test this prediction by studying a new Canadian stock exchange, Alpha, that experienced the entry of 11 HFT firms over four years. Bid-ask spreads on Alpha...

1. Monopoly -- 2. Simultaneous quantity competition -- 3. Simultaneous price competition -- 4. Sequential competition -- 5. Regulating imperfectly competitive markets -- 6. R&D incentives -- 7. Mergers and Collusion -- 8. Bundling incentives -- 9. Incomplete information, signaling, and...

In this paper, we analyze the equilibrium amount of entertainment in news coverage of newspapers and television stations. We find that a shift in the inclination to read, expressed by a shift in the (psychological) distance costs, induces both media outlets to incorporate more entertaining...

This paper reconsiders the explanation of R&D subsidies by Spencer and Brander (1983) and others by allowing firms to license their innovations and to pool their R&D investments. We show that in equilibrium R&D joint ventures are formed and licensing occurs in a way that eliminates the strategic...

I model the strategic interaction between firms, that face decisions on investment, forward contracts and spot market quantities. For an investment decision that takes place after firms have contracted forward but before firms compete on the spot market (medium term investment), competition...