We study the market response to firm-specific shocks in a natural experiment setting. In 2006, a boycott of Danish products in several Arab countries was devastating for Danish cheese products firms. In Saudi Arabia their market share collapsed from 16.5% in January to below 1% in March and...

We study the ability of firms of various sizes to cater to the taste of consumers who differ in their geographic location, store choice, and type or purchase history. Using data on purchases at the household-barcode level from Nielsen, we find that heterogeneity across consumer segments accounts...

This paper examines jointly optimal monetary and macroprudential policies through the lens of targeting rules that are both implementable and optimal. Based on a DSGE framework that features nominal rigidity, housing, and an incomplete financial market, our targeting rules outperform an optimal...

The issue of measuring product variety has received relatively little attention due to its inherent difficulty. In the language of index numbers, an expansion in the range of inputs or outputs is a 'new goods' problem: a good that is newly available will have an observed price and quantity, but...