It is often argued that a rational bubble, because it is positive, must increase the price of a stock. This argument is not valid in general: as soon as bubbles affect interest rates, the fundamental value of a stock depends on whether or not a bubble is present. The existence of a rational bubble then might, by raising equilibrium interest rates, depress the fundamental to such an extent that the sum of the positive bubble and decreased fundamental falls short of the fundamental, no-bubble price. Under conditions made precise below, there can therefore be price decreasing bubbles, and an asset can be "undervalued."
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Paper provided by National Bureau of Economic Research, Inc in its series NBER Working Papers with number
2821.
Length: Date of creation: Jan 1989 Date of revision: Handle: RePEc:nbr:nberwo:2821
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Bernheim, B Douglas & Bagwell, Kyle, 1988.
"Is Everything Neutral?,"
Journal of Political Economy,
University of Chicago Press, vol. 96(2), pages 308-38, April.
[Downloadable!] (restricted)
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B. Douglas Bernheim & Kyle Bagwell, 1989.
"Is Everything Neutral?,"
NBER Working Papers
2086, National Bureau of Economic Research, Inc.
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Cited by: (explanations, 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.)
Ricardo J. Caballero & Mohamad L. Hammour, 2002.
"Speculative Growth,"
NBER Working Papers
9381, National Bureau of Economic Research, Inc.
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