This study is motivated by two major considerations. First, the Fletcher andTaylor (1996) approach has yet to be applied to short-date markets to assess thediminishing role of transaction costs in explaining the devjatjons of observed forwardforeign exchange prices from interest parity forward...

We provide nonparametric quantile regressions to test for autocorrelation patterns for weekly and monthly stock returns. We test in four developed markets (North America, Europe, Japan, and Asia without Japan) and five market-size portfolios. We find greater heteroskedasticity for the...