The authors apply the original variance bounds tests to the present value model for the U.K. stock market and amend these tests to take account of revisions in the model's parameters. They show that variance bounds tests that correct for this are no longer violated. However, they claim there is...

This paper investigates whether excess stock price volatility may be due in part to a failure of the market to form rational expectations. Using data on analysts' expectations of long run earnings growth for individual companies, the authors report a number of interrelated results which lend...

This paper investigates the determinants of price quote revisions on the London Stock Exchange for a sample of highly liquid stocks over a two-week settlement period in September 1990. In our theoretical model the level of optimal price quotes set by market makers are a function of the expected...

This paper compares trading costs for institutional investors subject to liquidity shocks, in auction and dealer markets. The batch auction restricts the institutions' ability to exploit informational advantages because of competition between institutions when they simultaneously submit orders....

This paper examines the effect of a change in the percentage of informed participants in an asset market on the variability of prices. The authors consider equilibrium in the asset market before the information is revealed to a subset of traders. They find that ex ante price variability is...