The accumulation/distribution indicator (or A/D) is a cumulative indicator used to provide insight into how strong a trend is. It uses volume and price to determine if a stock is under accumulation or distribution. If the price is rising but the indicator is falling, it can be an indication that buyers are not enough to support the rising price, meaning a decline could me imminent.
We don't know everything about the markets. We're just devoted to learners. Taken from those smarter than ourselves, here's how we define Accumulation Pattern.