Using intraday data, this study examines the lead/lag relations of prices and trading activity between the option and stock option markets during the period surrounding quarterly earnings announcements. We are unable to support Stephan and Whaley's (1990) findings that, in general, trading...

This paper uses a unique data base of plant-level cross-sectional data to analyse the relative performance of Just-in-time (JIT) plants operating in two distinct manufacturing industries: electronic-components and auto-parts. The multivariate tests show that JIT plants use significantly less...