We derive and test q-theory implications for cross-sectional stock returns. Under constant returns to scale, stock returns equal levered investment returns, which are tied directly to firm characteristics. When we use GMM to match average levered investment returns to average observed stock...

Welch (2013) critiques recent work in dynamic corporate finance. We offer the contrasting view that there is no logical reason to dismiss entire research methodologies, and that many methods can be useful. We explain why dynamic models and structural estimation are useful research tools, as well...

We estimate a dynamic investment model in which firms finance with equity, cash, or debt. Misvaluation affects equity values, and firms optimally issue and repurchase overvalued and undervalued shares. The funds flowing to and from these activities come from investment, dividends, or net cash....

This paper studies how introducing a central bank digital currency (CBDC) can affect the banking system. We show that CBDC need not reduce bank lending unless frictions and synergies bind deposits and lending together. We then estimate a dynamic banking model to quantify the importance of these...

Why do firms purchase technology instead of developing it internally? This paper studies two main motives behind technology-driven acquisitions: synergies and competition. We argue that the key determinant for the firm's choice of organic growth or acquisition of innovation is its profit shock...

We quantify the impact of bank market power on monetary policy transmission through banks to borrowers. We estimate a dynamic banking model in which monetary policy affects imperfectly competitive banks’ funding costs. Banks optimize the pass-through of these costs to borrowers and depositors,...

We develop a method for estimating the stock market impact of aggregate events. Based on using data on both stock and options prices, our technique accounts for two important sources of bias present in traditional methods. First, our method takes into account market anticipation, without the...