Heteroskedasticity in Stock Return Data: Volume versus GARCH Effects

  • Author(s): CHRISTOPHER G. LAMOUREUX, WILLIAM D. LASTRAPES
  • Published: Apr 30, 2012
  • Pages: 221-229
  • DOI: 10.1111/j.1540-6261.1990.tb05088.x

ABSTRACT

This paper provides empirical support for the notion that Autoregressive Conditional Heteroskedasticity (ARCH) in daily stock return data reflects time dependence in the process generating information flow to the market. Daily trading volume, used as a proxy for information arrival time, is shown to have significant explanatory power regarding the variance of daily returns, which is an implication of the assumption that daily returns are subordinated to intraday equilibrium returns. Furthermore, ARCH effects tend to disappear when volume is included in the variance equation.

Jump to menu

Main Navigation

Search the Site / Journal

Search Keywords

Search Tips

Members' Login

Credentials

Members' Options

Site Footer

View Mobile Version