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Valuation, investment and the pure profit share


  • Pierre Lafourcade


This paper explores some implications for valuation and investment of challenging the standard assumption that there are no aggregate pure profits in the US economy. First, it highlights the theoretical importance of monopoly rents for fluctuations in average Q. A series for such rents is then computed by assuming that production is Cobb-Douglas, as fluctuations in the output share of pure profits may be inferred from variations in the labor share. Consequently, the paper focuses on the correlation between a measure of rents and observable average Q. It also reassesses the empirical disconnection between investment and a measure of marginal q purged of monopoly rents. The paper finds that the existence of pure profits as constructed from unit labor costs only accounts for about 5% of fluctuations in observed Q, and alters only minimally the empirical relationship between q and investment.

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  • Pierre Lafourcade, 2004. "Valuation, investment and the pure profit share," Finance and Economics Discussion Series 2004-08, Board of Governors of the Federal Reserve System (U.S.).
  • Handle: RePEc:fip:fedgfe:2004-08

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    References listed on IDEAS

    1. Robert E. Hall, 2001. "The Stock Market and Capital Accumulation," American Economic Review, American Economic Association, vol. 91(5), pages 1185-1202, December.
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    4. Caballero, Ricardo J., 1999. "Aggregate investment," Handbook of Macroeconomics,in: J. B. Taylor & M. Woodford (ed.), Handbook of Macroeconomics, edition 1, volume 1, chapter 12, pages 813-862 Elsevier.
    5. Stephen Bond, 2000. "Noisy Share Prices and the Q Model of Investment," Econometric Society World Congress 2000 Contributed Papers 1320, Econometric Society.
    6. Steven M. Fazzari & R. Glenn Hubbard & Bruce C. Petersen, 1988. "Financing Constraints and Corporate Investment," Brookings Papers on Economic Activity, Economic Studies Program, The Brookings Institution, vol. 19(1), pages 141-206.
    7. Julio J. Rotemberg & Michael Woodford, 1993. "Dynamic General Equilibrium Models with Imperfectly Competitive Product Markets," NBER Working Papers 4502, National Bureau of Economic Research, Inc.
    8. Abel, Andrew B & Blanchard, Olivier J, 1986. "The Present Value of Profits and Cyclical Movements in Investment," Econometrica, Econometric Society, vol. 54(2), pages 249-273, March.
    9. Olivier Blanchard & Changyong Rhee & Lawrence Summers, 1993. "The Stock Market, Profit, and Investment," The Quarterly Journal of Economics, Oxford University Press, vol. 108(1), pages 115-136.
    10. Narayana R. Kocherlakota, 1996. "The Equity Premium: It's Still a Puzzle," Journal of Economic Literature, American Economic Association, vol. 34(1), pages 42-71, March.
    11. Robertson, Donald & Wright, Stephen, 1998. "The Good News and the Bad News about Long-run Stock Market Returns," Cambridge Working Papers in Economics 9822, Faculty of Economics, University of Cambridge.
    12. Rotemberg, Julio J & Woodford, Michael, 1996. "Real-Business-Cycle Models and the Forecastable Movements in Output, Hours, and Consumption," American Economic Review, American Economic Association, vol. 86(1), pages 71-89, March.
    13. Abel, Andrew B., 1999. "Risk premia and term premia in general equilibrium," Journal of Monetary Economics, Elsevier, vol. 43(1), pages 3-33, February.
    14. Hayashi, Fumio, 1982. "Tobin's Marginal q and Average q: A Neoclassical Interpretation," Econometrica, Econometric Society, vol. 50(1), pages 213-224, January.
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    Investments ; Rent (Economic theory);

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