We document a sizeable increase in the frequency of price adjustments following the large energy shocks of 2022. We use a tractable New Keynesian model, calibrated to the pre-shock data, to interpret ...

Collis, David, and Haisley Wert. "Less Is More: Will Aldi's Expansion Plans Pay Off in a Crowded U.S. Grocery Market?" Harvard Business School Case 725-416, January 2025.

Zhang, Shunyuan, and Narakesari Narayandas. "Engaging Customers with AI in Online Chats: Evidence from a Randomized Field Experiment." Management Science (forthcoming).