Accumulation or distribution has typically occurred before a trend day of significant range. Thus one clue is in the analysis of the accumulation and distribution points leading up to the trading day (hence the idea of multi-frame analysis perhaps acting as a leading indicator). If "support has held" or "resistance has been an effective ceiling" to price movement in the absence of undigested news predictions with a modicum of accuracy can be placed. Then if volume corroborates price movement you may have an unbalanced market which will trend all day to a new balance point. Market profile type of stuff.
