There exist two possible aggregation issues in studies to asymmetric price responses: (i) an issue due to aggregation over time, and (ii) an issue due to aggregation over space. Empirical studies already confirm the existence of the first issue. This paper confirms the existence of the second issue by studying daily retail prices of individual gasoline stations. I find that 38% of the stations respond asymmetrically to changes in the gasoline spot market price. Hence, asymmetric pricing is a feature of individual firms.
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Riemer P. Faber (2015) studied this question.
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