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URL:  https://boards.fool.com/duration-of-price-moves-18276091.aspx

Subject:  duration of price moves Date:  12/10/2002  8:41 PM
Author:  solasis Number:  240 of 297


http://www.econ.ucsd.edu/%7Eatimmerm/dur-14-2.pdf

Duration Dependence in Stock Prices:
An Analysis of Bull and Bear Markets
ASGER LUNDE
Department of Information Science,
The Aarhus School of Business, Fuglesangs All ´e 4, DK-8210 Aarhus V, Denmark
ALLAN TIMMERMANN
Department of Economics, University of California, San Diego,
9500 Gilman Drive La Jolla, CA 92093-0508, USA

ABSTRACT
This paper studies time series dependence in the direction of stock prices by modelling the (instantaneous)
probability that a bull or bear market terminates as a function of its age and a set of underlying state
variables such as interest rates. A random walk model is rejected both for bull and bear markets. Although
it fits the data better, a GARCH model is also found to be inconsistent with the very long bull markets observed
in the data. The strongest effect of increasing interest rates is found to be a lower bear market hazard
rate and hence a higher chance of continued declines in stock prices.


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