The compass rose pattern cannot be observed in daily returns in the spot fo
reign exchange (forex) market, but is observable when intraday forex return
s are used. Monte Carlo simulations show that the pattern is visible only w
hen the tick/volatility ratio is above some threshold level, a condition th
at is readily met with intraday returns. (C) 2000 Elsevier Science S.A. All
rights reserved. JEL classification: C22; F31; G15.