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Bottom-Up Markup Fluctuations*
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DOI：10.1093/qje/qjaf029.png)
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Abstract
En 中文
We study markup cyclicality in a granular macroeconomic model with oligopolistic competition. We first characterize how firm, sectoral, and aggregate markups comove with output at different levels of aggregation in response to firm-level shocks. We quantify the model's ability to reproduce salient features of the cyclical properties of measured markups in French administrative firm-level data from the bottom (firm) level to the aggregate level. We document that (i) firm-level markups rise with market share and sector-level markups with concentration, (ii) the relationship between markups and sectoral output varies by firm size-negative for small firms but positive for large ones, (iii) sector-level markups move positively with sectoral output, and (iv) sectoral markups show no systematic relationship with aggregate output. Our model helps rationalize these seemingly conflicting patterns of markup cyclicality in the data.
Keywords:
CYCLICAL BEHAVIOR
FIRM DYNAMICS
MARGINAL COST
PRICES
ORIGINS
TRADE
COMPETITION
ENTRY
POWER
MODEL
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