Aggregate Short Interest and Market Valuations
AbstractWe examine some basic data on the evolution of aggregate short interest, both during the dot-com era, and at other times in history. Total short interest moves in a countercyclical fashion. For example, short interest in NASDAQ stocks actually declines as the NASDAQ index approaches its peak. Moreover, this decline does not seem to reflect a substitution away from outright short-selling and towards put options, as the ratio of put-to-call volume displays the same countercyclical tendency. The evidence suggests that: i) arbitrageurs are reluctant to bet against aggregate mispricings; and ii) short-selling does not play a particularly helpful role in stabilizing the overall stock market.
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Bibliographic InfoPaper provided by National Bureau of Economic Research, Inc in its series NBER Working Papers with number 10218.
Date of creation: Jan 2004
Date of revision:
Publication status: published as Lamont, Owen A. and Jeremy C. Stein. "Aggregate Short Interest And Market Valuations," American Economic Review, 2004, v94(2,May), 29-32.
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Other versions of this item:
- Owen A. Lamont & Jeremy C. Stein, 2003. "Aggregate Short Interest and Market Valuations," Harvard Institute of Economic Research Working Papers 2027, Harvard - Institute of Economic Research.
- G12 - Financial Economics - - General Financial Markets - - - Asset Pricing; Trading Volume; Bond Interest Rates
- G14 - Financial Economics - - General Financial Markets - - - Information and Market Efficiency; Event Studies; Insider Trading
This paper has been announced in the following NEP Reports:
- NEP-ALL-2004-01-12 (All new papers)
- NEP-FIN-2004-01-12 (Finance)
- NEP-FMK-2004-01-12 (Financial Markets)
- NEP-RMG-2004-01-12 (Risk Management)
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