We quantify the prevalence of undisclosed influencer posts on Twitter across a large set of brands based on a unique data set of over 100 million posts. We develop a novel method to detect undisclosed influencer posts and find that 96% of influencer posts are not disclosed as such. Despite...

Subsidy programs are widely offered in both developing and developed countries to encourage consumption of products that generate positive social, health and environmental externalities. We study the effect of subsidies on product consumption under uncertain market demand. To reach a target...

We systematically study market share and product assortment dispersion of national brands in 25 consumer packaged goods industries across 199 markets and 109 retailers in the US. Previous findings by Bronnenberg et al. (2007, 2009) highlight the persistent differences in market shares of...