4 papers
Bridging Quasi-Experimental and Structural Approaches for Robust Evaluation of US Airline Mergers
Gaurab Aryal, Anirban Chattopadhyaya, Federico Ciliberto
We bridge quasi-experimental and structural approaches to merger retrospectives. First, we derive the difference-in-differences (DiD) equation as a reduced form of a demand-and-sup…
Common Subcontracting and Airline Prices
Gaurab Aryal, Dennis J. Campbell, Federico Ciliberto +1
In the US airline industry, independent regional airlines fly passengers on behalf of several national airlines across different markets, giving rise to $\textit{common subcontract…
Valuing Pharmaceutical Drug Innovations
Gaurab Aryal, Federico Ciliberto, Leland E. Farmer +1
We propose a methodology to estimate the market value of pharmaceutical drugs. Our approach combines the event study method with a discounted cash flow model that infers drug value…
Coordinated Capacity Reductions and Public Communication in the Airline Industry
Gaurab Aryal, Federico Ciliberto, Benjamin T. Leyden
We investigate the allegation that legacy U.S. airlines communicated via earnings calls to coordinate with other legacy airlines in offering fewer seats on competitive routes. To t…