This paper introduces a new approach to understanding investment. The distinctive feature of our approach is that shocks to the economic fundamentals have both persistent and transitory components, and that firms must disentangle the persistent from the transitory shocks. The model generates...

We develop and analyze a model of a multi-stage investment project that captures many features of R&D ventures and start-up companies. An important feature these problems share is that the firm learns about the potential profitability of the project throughout its life, but that research and...

Using detailed project-level data, we document a novel mechanism through which information externalities distort investment. Firms anticipate information spillover from peers’ investment decisions and delay project exercise to learn from their peers’ outcomes. To establish a causal...