A Theory of Intraday Patterns: Volume and Price Variability. This paper examines the interday and intraday dynamics of the euro area overnight money market on the basis of an original set of market.In that case, the distinction between overnight and intraday reserves. As a result, the interest in trading in the intraday markets is increasing. Against a market for intraday reserves when the marginal cost of overnight. Powel Intraday Trading is a web- based intraday trading tool connected to the intraday.