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Inventories and the business cycle: an equilibrium analysis of (S,s) policies

  • Aubhik Khan
  • Julia K. Thomas

The authors develop an equilibrium business cycle model in which final goods producers pursue generalized (S,s) inventory policies with respect to intermediate goods, a consequence of nonconvex factor adjustment costs. Calibrating their model to reproduce the average inventory-to-sales ratio in postwar U.S. data, the authors find that it explains half of the cyclical variability of inventory investment. Moreover, inventory accumulation is strongly procyclical, and production is more volatile than sales, as in the data. The comovement between inventory investment and final sales is often interpreted as evidence that inventories amplify aggregate fluctuations. However, the authors' model economy exhibits a business cycle similar to that of a comparable benchmark without inventories.

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Paper provided by Federal Reserve Bank of Philadelphia in its series Working Papers with number 02-20.

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Date of creation: 2002
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Handle: RePEc:fip:fedpwp:02-20
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  1. Caballero, Ricardo J & Engel, Eduardo M R A, 1991. "Dynamic (S, s) Economies," Econometrica, Econometric Society, vol. 59(6), pages 1659-86, November.
  2. Caballero, R.J., 1994. "Explaining Investment Dynamics in U.S. Manufacturing: Generalized (S,s) Approach," Working papers 94-32, Massachusetts Institute of Technology (MIT), Department of Economics.
  3. Per Krusell & Anthony A. Smith, Jr., . "Income and Wealth Heterogeneity in the Macroeconomy," GSIA Working Papers 1997-37, Carnegie Mellon University, Tepper School of Business.
  4. Daniele Coen-Pirani, 2003. "Microeconomic Inventory Behavior and Aggregate Inventory Dynamics," GSIA Working Papers 2003-E28, Carnegie Mellon University, Tepper School of Business.
  5. James H. Stock & Mark W. Watson, 2003. "Has the business cycle changed?," Proceedings - Economic Policy Symposium - Jackson Hole, Federal Reserve Bank of Kansas City, pages 9-56.
  6. Brad R Humphreys & Louis J Maccini & Scott Schuh, 2000. "Input and Output Inventories," Economics Working Paper Archive 426, The Johns Hopkins University,Department of Economics.
  7. Robert G. King & Sergio T. Rebelo, 2000. "Resuscitating Real Business Cycles," RCER Working Papers 467, University of Rochester - Center for Economic Research (RCER).
  8. Hall, George & Rust, John, 2000. "An empirical model of inventory investment by durable commodity intermediaries," Carnegie-Rochester Conference Series on Public Policy, Elsevier, vol. 52(1), pages 171-214, June.
  9. Kahn, James A, 1987. "Inventories and the Volatility of Production," American Economic Review, American Economic Association, vol. 77(4), pages 667-79, September.
  10. Prescott, Edward C., 1986. "Theory ahead of business-cycle measurement," Carnegie-Rochester Conference Series on Public Policy, Elsevier, vol. 25(1), pages 11-44, January.
  11. Per Krusell & Anthony A. Smith, Jr., . "Income and Wealth Heterogeneity, Portfolio Choice, and Equilibrium Asset Returns," GSIA Working Papers 1997-45, Carnegie Mellon University, Tepper School of Business.
  12. Caplin, Andrew S, 1985. "The Variability of Aggregate Demand with (S, s) Inventory Policies," Econometrica, Econometric Society, vol. 53(6), pages 1395-1409, November.
  13. Aubhik Khan & Julia K. Thomas, 2000. "Nonconvex factor adjustments in equilibrium business cycle models: do nonlinearities matter?," Working Papers 00-10, Federal Reserve Bank of Philadelphia.
  14. Ramey, Valerie A, 1989. "Inventories as Factors of Production and Economic Fluctuations," American Economic Review, American Economic Association, vol. 79(3), pages 338-54, June.
  15. repec:cup:macdyn:v:1:y:1997:i:2:p:387-422 is not listed on IDEAS
  16. Gary Hansen, 2010. "Indivisible Labor and the Business Cycle," Levine's Working Paper Archive 233, David K. Levine.
  17. Bils, M. & Kahn, J.A., 1996. "What Inventory Behavior Tells Us About Business Cycles," RCER Working Papers 428, University of Rochester - Center for Economic Research (RCER).
  18. Martin S. Eichenbaum, 1988. "Some Empirical Evidence on the Production Level and Production Cost Smoothing Models of Inventory Investment," NBER Working Papers 2523, National Bureau of Economic Research, Inc.
  19. Valerie A. Ramey & Daniel J. Vine, 2004. "Tracking the Source of the Decline in GDP Volatility: An Analysis of the Automobile Industry," NBER Working Papers 10384, National Bureau of Economic Research, Inc.
  20. Valerie A. Ramey & Kenneth D. West, 1997. "Inventories," NBER Working Papers 6315, National Bureau of Economic Research, Inc.
    • Ramey, Valerie A. & West, Kenneth D., 1999. "Inventories," Handbook of Macroeconomics, in: J. B. Taylor & M. Woodford (ed.), Handbook of Macroeconomics, edition 1, volume 1, chapter 13, pages 863-923 Elsevier.
  21. repec:oup:restud:v:67:y:2000:i:1:p:117-45 is not listed on IDEAS
  22. Jonathan McCarthy & Egon Zakrajsek, 2000. "Microeconomic inventory adjustment: evidence from U.S. firm-level data," Finance and Economics Discussion Series 2000-24, Board of Governors of the Federal Reserve System (U.S.).
  23. Eric J. Bartelsman & Wayne Gray, 1996. "The NBER Manufacturing Productivity Database," NBER Technical Working Papers 0205, National Bureau of Economic Research, Inc.
  24. Rogerson, Richard, 1988. "Indivisible labor, lotteries and equilibrium," Journal of Monetary Economics, Elsevier, vol. 21(1), pages 3-16, January.
  25. Andreas Hornstein, 1998. "Inventory investment and the business cycle," Economic Quarterly, Federal Reserve Bank of Richmond, issue Spr, pages 49-71.
  26. Ramey, Valerie A, 1991. "Nonconvex Costs and the Behavior of Inventories," Journal of Political Economy, University of Chicago Press, vol. 99(2), pages 306-34, April.
  27. Christiano, Lawrence J., 1988. "Why does inventory investment fluctuate so much?," Journal of Monetary Economics, Elsevier, vol. 21(2-3), pages 247-280.
  28. Kydland, Finn E & Prescott, Edward C, 1982. "Time to Build and Aggregate Fluctuations," Econometrica, Econometric Society, vol. 50(6), pages 1345-70, November.
  29. Scott Schuh, 1996. "Evidence on the link between firm-level and aggregate inventory behavior," Finance and Economics Discussion Series 96-46, Board of Governors of the Federal Reserve System (U.S.).
  30. Patricia C. Mosser, 1991. "Trade Inventories and (S,s)," The Quarterly Journal of Economics, Oxford University Press, vol. 106(4), pages 1267-1286.
  31. Alan S. Blinder, 1981. "Retail Inventory Behavior and Business Fluctuations," Brookings Papers on Economic Activity, Economic Studies Program, The Brookings Institution, vol. 12(2), pages 443-520.
  32. Alan S. Blinder & Louis J. Maccini, 1991. "Taking Stock: A Critical Assessment of Recent Research on Inventories," Journal of Economic Perspectives, American Economic Association, vol. 5(1), pages 73-96, Winter.
  33. Terry J. Fitzgerald, 1997. "Inventories and the business cycle: an overview," Economic Review, Federal Reserve Bank of Cleveland, issue Q III, pages 11-22.
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