Francisco, are you familiar with the paper by Francois Gerard, a grad student from Berkeley on the market this year? He has a very similar paper, studying the same incident and finding largely similar impacts using the same identification strategy. But I think he also reaches some conclusions about the mechanism underlying the change -- e.g. he shows that the response can't be explained by private incentives alone. Any thoughts on how your papers differ? It looks like both of you have been working independently on the same thing for the past 2-3 years, as well as presenting it publicly. This is a really tricky situation for us grad students, I know. But you should be citing his paper -- it looks like it was on SSRN in June, although there may be an updated version on his website. http://papers.ssrn.com/sol3/papers.cfm?abstract_id=2097195 https://sites.google.com/site/fransgerard/research Good luck on the market. The project is very interesting!