IDEAS home Printed from https://ideas.repec.org/
MyIDEAS: Login to save this paper or follow this series

An Empirical Model of Inventory Investment by Durable Commodity Intermediaries

  • George Hall

    (Yale University)

  • John Rust

    (Yale University)

We present a new detailed data set of high-frequency observations on inventory investment by a U.S. steel wholesaler. Our analysis of the data leads to six main conclusions: orders and sales are made infrequently; orders are more volatile than sales; order sizes vary considerably; there is considerable day-to-day variability in sales prices; inventory/sales ratios are unstable; and there are occasional stockouts. We model the firm generically as a durable commodity intermediary. We demonstrate that the firm's behavior at the product level is well approximated by an optimal trading strategy derived from a multi-dimensional nonlinear dynamic programming problem with continuous state and control variables which are subject to frequently binding inequality constraints. We show that the optimal trading strategy takes the form of a generalized (S,s) rule in which the (S,s) bands are decreasing functions of the spot price. We simulate a calibrated version of this model, and show that the simulated data exhibit the key features of inventory investment we observe in our data.

If you experience problems downloading a file, check if you have the proper application to view it first. In case of further problems read the IDEAS help page. Note that these files are not on the IDEAS site. Please be patient as the files may be large.

File URL: http://econwpa.repec.org/eps/mac/papers/9904/9904005.ps.gz
Download Restriction: no

File URL: http://econwpa.repec.org/eps/mac/papers/9904/9904005.pdf
Download Restriction: no

Paper provided by EconWPA in its series Macroeconomics with number 9904005.

as
in new window

Length: 40 pages
Date of creation: 12 Apr 1999
Date of revision:
Handle: RePEc:wpa:wuwpma:9904005
Note: TeX file, Postscript version submitted, 40 pages
Contact details of provider: Web page: http://econwpa.repec.org

References listed on IDEAS
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:

as in new window
  1. Kenneth D. West, 1985. "A Variance Bounds Test of the Linear Quardractic Inventory Model," NBER Working Papers 1581, National Bureau of Economic Research, Inc.
  2. Jeffrey A. Miron & Stephen P. Zeldes, . "Production, Sales and the Change in Inventories: An Identity that Doesn't Add Up," Rodney L. White Center for Financial Research Working Papers 20-87, Wharton School Rodney L. White Center for Financial Research.
  3. Deaton, A. & Laroque, G., 1989. "On The Behavior Of Commodity Prices," Papers 145, Princeton, Woodrow Wilson School - Development Studies.
  4. 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).
  5. Ray C. Fair, 1990. "The Production Smoothing Model is Alive and Well," NBER Working Papers 2877, National Bureau of Economic Research, Inc.
  6. Andrew B. Abel, 1985. "Inventories, Stock-Outs, and Production Smoothing," NBER Working Papers 1563, National Bureau of Economic Research, Inc.
  7. John Rust, 1997. "A Comparison of Policy Iteration Methods for Solving Continuous-State, Infinite-Horizon Markovian Decision Problems Using Random, Quasi-random, and Deterministic Discretizations," Computational Economics 9704001, EconWPA.
  8. Blanchard, Olivier J, 1983. "The Production and Inventory Behavior of the American Automobile Industry," Journal of Political Economy, University of Chicago Press, vol. 91(3), pages 365-400, June.
  9. Eichenbaum, Martin, 1989. "Some Empirical Evidence on the Production Level and Production Cost Smoothing Models of Inventory Investment," American Economic Review, American Economic Association, vol. 79(4), pages 853-64, September.
  10. Timothy F. Bresnahan & Valerie A. Ramey, 1992. "Output Fluctuations at the Plant Level," NBER Working Papers 4105, National Bureau of Economic Research, Inc.
  11. Jonas D.M. Fisher & Andreas Hornstein, 1995. "(S,s) inventory policies in general equilibrium," Discussion Paper / Institute for Empirical Macroeconomics 104, Federal Reserve Bank of Minneapolis.
  12. Blinder, Alan S, 1986. "Can the Production Smoothing Model of Inventory Behavior Be Saved?," The Quarterly Journal of Economics, MIT Press, vol. 101(3), pages 431-53, August.
  13. Jeffrey A. Miron & Stephen P. Zeldes, . "Seasonality, Cost Shocks and the Production Smoothing Model of Inventories," Rodney L. White Center for Financial Research Working Papers 1-87, Wharton School Rodney L. White Center for Financial Research.
  14. Alan S. Blinder, 1986. "More on the Speed of Adjustment in Inventory Models," NBER Working Papers 1913, National Bureau of Economic Research, Inc.
  15. Kahn, James A, 1992. "Why Is Production More Volatile Than Sales? Theory and Evidence on the Stockout-Avoidance Motive for Inventory-Holding," The Quarterly Journal of Economics, MIT Press, vol. 107(2), pages 481-510, May.
  16. Hall, George J., 2000. "Non-convex costs and capital utilization: A study of production scheduling at automobile assembly plants," Journal of Monetary Economics, Elsevier, vol. 45(3), pages 681-716, June.
  17. 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.
  18. 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.
  19. Kahn, James A, 1987. "Inventories and the Volatility of Production," American Economic Review, American Economic Association, vol. 77(4), pages 667-79, September.
  20. Caplin, Andrew S, 1985. "The Variability of Aggregate Demand with (S, s) Inventory Policies," Econometrica, Econometric Society, vol. 53(6), pages 1395-1409, November.
  21. repec:cup:cbooks:9780521326162 is not listed on IDEAS
  22. John Rust & Joseph Traub & Henryk Wozniakowski, 1999. "No Curse of Dimensionality for Contraction Fixed Points Even in the Worst Case," Computational Economics 9902001, EconWPA.
  23. John Rust, 1997. "Using Randomization to Break the Curse of Dimensionality," Econometrica, Econometric Society, vol. 65(3), pages 487-516, May.
  24. Martin Feldstein & Alan Auerbach, 1976. "Inventory Behavior in Durable-Goods Manufacturing: The Target-Adjustment Model," Brookings Papers on Economic Activity, Economic Studies Program, The Brookings Institution, vol. 7(2), pages 351-408.
  25. Eichenbaum, Martin S., 1984. "Rational expectations and the smoothing properties of inventories of finished goods," Journal of Monetary Economics, Elsevier, vol. 14(1), pages 71-96, July.
Full references (including those not matched with items on IDEAS)

This item is not listed on Wikipedia, on a reading list or among the top items on IDEAS.

When requesting a correction, please mention this item's handle: RePEc:wpa:wuwpma:9904005. See general information about how to correct material in RePEc.

For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (EconWPA)

If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

If references are entirely missing, you can add them using this form.

If the full references list an item that is present in RePEc, but the system did not link to it, you can help with this form.

If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your profile, as there may be some citations waiting for confirmation.

Please note that corrections may take a couple of weeks to filter through the various RePEc services.

This information is provided to you by IDEAS at the Research Division of the Federal Reserve Bank of St. Louis using RePEc data.