Dark pools are private trading exchanges that are not available to outside retail investors. The main reason for the existence of dark pools is to facilitate block trading between big institutional investors. The Dark pool indicator provides a way of peeking into the secret exchanges. Dark Pools are so important to retail traders is that the liquidity they are drawing and their activity often precedes a huge sudden momentum action in individual stocks. Individual stock traders can benefit greatly from being able to identify their Dark Pool Buy Zones. The Dark Pools use special, complex, automated orders that trigger when a certain set of criteria is present for each stock. This criteria is based on the stock, market conditions, and activity in the stock chart.