NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH
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Vishal Singh

New York University

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Institutional Affiliation: New York University

NBER Working Papers and Publications

April 2020A Sticky-Price View of Hoarding
with Christopher Hansman, Harrison Hong, Áureo de Paula: w27051
Hoarding of staples has long worried policymakers due to concerns about shortages. We quantify how sticky store prices---delayed price adjustment to shocks by reputable retailers---exacerbate hoarding. When prices are sticky, households hoard not only for precautionary motives but also non-precautionary motives: they stockpile as they would during a standard retail promotion or for the purpose of retail arbitrage. Using US supermarket scanner data covering the 2008 Global Rice Crisis, an episode driven by an observable cost shock due an Indian ban on raw rice exports, we find that sticky prices account for a sizeable fraction of hoarding. Hoarding is mostly for own use and more prevalent among richer households. Our findings are consistent with media reports of distributional concerns as...
February 2015Hoard Behavior and Commodity Bubbles
with Harrison Hong, Áureo de Paula: w20974
Hoarding by large speculators is often blamed for contributing to commodity market panics and bubbles. Using supermarket scanner data on US household purchases during the 2008 Rice Bubble, we show that hoarding is in fact more systemic, affecting even households who have no resale motive. Export bans led to a spike in prices worldwide in the first half of 2008, which spilled over into US markets. Anticipating shortages, US households with previous purchases of rice, especially those of Asian ethnicity, nearly doubled their buying around the peak of the bubble. We document transmission mechanisms through over-extrapolation from high prices and contagion, as many households bought rice for the first and last time during the bubble.
 
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