Cascades in Networks and Aggregate Volatility
We provide a general framework for the study of cascade effects created by interconnections between sectors, firms or financial institutions. Focusing on a multi sector economy linked through a supply network, we show how structural properties of the supply network determine both whether aggregate volatility disappears as the number of sectors increases (i.e., whether the law of large numbers holds) and when it does, the rate at which this happens. Our main results characterize the relationship between first order interconnections (captured by the weighted degree sequence in the graph induced by the input-output relations) and aggregate volatility, and more importantly, the relationship between higher-order interconnections and aggregate volatility. These higher-order interconnections capture the cascade effects, whereby low productivity or the failure of a set of suppliers propagates through the rest of the economy as their downstream sectors/firms also suffer and transmit the negative shock to their downstream sectors/firms. We also link the probabilities of tail events (large negative deviations of aggregate output from its mean) to sector-specific volatility and to the structural properties of the supply network.
|Date of creation:||Nov 2010|
|Date of revision:|
|Publication status:||published as (With Vasco Carvalho, Asuman Ozdaglar, Alireza Tahbaz - Salehi ) Network Origins of Aggregate Fluctuat ions, September 2012, Econometrica , 80(5), pp.1977 - 2016.|
|Contact details of provider:|| Postal: National Bureau of Economic Research, 1050 Massachusetts Avenue Cambridge, MA 02138, U.S.A.|
Web page: http://www.nber.org
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- Xavier Gabaix, 2009.
"Power Laws in Economics and Finance,"
Annual Review of Economics,
Annual Reviews, vol. 1(1), pages 255-294, 05.
- Vasco Carvalho, 2007.
"Aggregate fluctuations and the network structure of intersectoral trade,"
Economics Working Papers
1206, Department of Economics and Business, Universitat Pompeu Fabra, revised Oct 2010.
- Vasco M Carvalho, 2008. "Aggregate Fluctuations and the Network Structure of Intersectoral Trade," 2008 Meeting Papers 1062, Society for Economic Dynamics.
- Xavier Gabaix & Rustam Ibragimov, 2007.
"Rank-1/2: A Simple Way to Improve the OLS Estimation of Tail Exponents,"
NBER Technical Working Papers
0342, National Bureau of Economic Research, Inc.
- Xavier Gabaix & Rustam Ibragimov, 2011. "Rank - 1 / 2: A Simple Way to Improve the OLS Estimation of Tail Exponents," Journal of Business & Economic Statistics, Taylor & Francis Journals, vol. 29(1), pages 24-39, January.
- Franklin Allen & Ana Babus & Elena Carletti, 2010.
"Financial Connections and Systemic Risk,"
Economics Working Papers
ECO2010/30, European University Institute.
- Franklin Allen & Ana Babus & Elena Carletti, 2010. "Financial Connections and Systemic Risk," NBER Working Papers 16177, National Bureau of Economic Research, Inc.
- Allen, F. & Babus, A. & Carletti, E., 2010. "Financial Connections and Systemic Risk," Discussion Paper 2010-88S, Tilburg University, Center for Economic Research.
- Franklin Allen & Ana Babus & Elena Carletti, 2010. "Financial Connections and Systemic Risk," Economics Working Papers ECO2010/26, European University Institute.
- Allen, Franklin & Babus, Ana & Carletti, Elena, 2010. "Financial Connections and Systemic Risk," Working Papers 10-20, University of Pennsylvania, Wharton School, Weiss Center.
- Dupor, Bill, 1999. "Aggregation and irrelevance in multi-sector models," Journal of Monetary Economics, Elsevier, vol. 43(2), pages 391-409, April.
- Markus K. Brunnermeier & Gary Gorton & Arvind Krishnamurthy, 2011.
in: NBER Macroeconomics Annual 2011, Volume 26, pages 149-176
National Bureau of Economic Research, Inc.
- Xavier Gabaix, 2011.
"The Granular Origins of Aggregate Fluctuations,"
Econometric Society, vol. 79(3), pages 733-772, 05.
- Timothy G. Conley & Bill Dupor, 2003. "A Spatial Analysis of Sectoral Complementarity," Journal of Political Economy, University of Chicago Press, vol. 111(2), pages 311-352, April.
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