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Consumer Search, Productivity Heterogeneity, Prices, Markups, and Pass-through: Theory and Estimation

Author

Listed:
  • Alex Chernoff

    (Bank of Canada)

  • Allen Head

    (Queen's University)

  • Beverly Lapham

Abstract

We develop and estimate a search model in which identical consumers trade with price-setting firms that differ in productivity. In the model, equilibrium distributions of both prices and markups are non-degenerate and continuous with a firm's price decreasing in its productivity. Variation in the markup across firms is more complicated and depends on both the search process and the distribution of productivity. The model parameters governing each of these are estimated using firm-level data on retail industries in Canada. We use the estimated model to characterize the qualitative and quantitative differences in prices and markups across firms. These differences stem from firm-level variation in demand elasticities driven by productivity heterogeneity and imperfect information about prices. Additionally, we derive analytical expressionsto determine how individual firm prices and markups respond to cost and demand changes. This allows us to analyze empirically heterogeneity in firm-level price and markup pass-through. Our findings reveal substantial heterogeneity in pass-through across firms, highlighting the distributional impact of shocks across consumers purchasing in different regions of the price distribution. Finally, our analysis underscores the importance of accounting for individual firm price and markup adjustments to fully understand pass-through to average prices.

Suggested Citation

  • Alex Chernoff & Allen Head & Beverly Lapham, 2024. "Consumer Search, Productivity Heterogeneity, Prices, Markups, and Pass-through: Theory and Estimation," Working Paper 1523, Economics Department, Queen's University.
  • Handle: RePEc:qed:wpaper:1523
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    File URL: https://www.econ.queensu.ca/sites/econ.queensu.ca/files/wpaper/qed_wp_1523.pdf
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    References listed on IDEAS

    as
    1. George Alessandria, 2009. "Consumer Search, Price Dispersion, And International Relative Price Fluctuations," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 50(3), pages 803-829, August.
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    Cited by:

    1. Alex Chernoff & Allen Head & Beverly Lapham, 2025. "Markups, Pass-Through, and Firm Heterogeneity with Sequentially Mixed Search," Working Paper 1525, Economics Department, Queen's University.

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    More about this item

    Keywords

    Markups; Productivity; Firm Heterogeneity; Search; Pass-through;
    All these keywords.

    JEL classification:

    • J11 - Labor and Demographic Economics - - Demographic Economics - - - Demographic Trends, Macroeconomic Effects, and Forecasts
    • D43 - Microeconomics - - Market Structure, Pricing, and Design - - - Oligopoly and Other Forms of Market Imperfection
    • E31 - Macroeconomics and Monetary Economics - - Prices, Business Fluctuations, and Cycles - - - Price Level; Inflation; Deflation

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