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Umbrella Effects

Roman Inderst, Frank Maier-Rigaud and Ulrich Schwalbe
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Ulrich Schwalbe: Universität Hohenheim

No 2013-ECO-17, Working Papers from IESEG School of Management

Abstract: We analyse the key determinants of umbrella effects, which arise when the price increase or quantity reduction of a cartel diverts demand to substitute products. Umbrella effects arise irrespective of whether non cartelists act as price takers (“competitive fringe”) or respond strategically to the increased demand. Sizable umbrella effects can also arise when non-cartelists are outside the relevant market (in the sense of a SSNIP test), provided that the cartel’s price increase is substantial. Further, a shift of demand to non-cartelists, triggering a price increase, can be induced also when their purchasers themselves benefit from higher demand as rivals purchase from the cartel and pass-on the respective price increase. To identify the actual damage it is thus key to take into account the overall adjustments among cartel members and outsiders as well as their respective, potentially competing purchasers. We also discuss how future analysis of the endogenous formation of cartels with partial market coverage should inform theories of the determinants of umbrella effects.

Keywords: umbrella effect; partial cartel; pass-on; cartel effect; quantification of damages; merger effects; private enforcement; standing; market definition; cellophane fallacy; antitrust (search for similar items in EconPapers)
JEL-codes: K21 L13 L41 (search for similar items in EconPapers)
Pages: 22 pages
Date: 2013-07
New Economics Papers: this item is included in nep-com, nep-lam, nep-law, nep-ltv, nep-mkt and nep-neu
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Citations: View citations in EconPapers (4)

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Journal Article: UMBRELLA EFFECTS (2014) Downloads
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