The volume-based strategy is quite common in trading. Competent interpretation of indicators can tell trader a lot about what is happening now in the market, and how the forces are distributed between buyers and sellers. Analyzing market volumes, people can make a decisions and predict how market will act. But that's about stock markets, not about forex. Within the forex market, it makes no sense to apply this type of data at all for a number of reasons. The first reason is lack of data. The Forex market is decentralized, respectively, we can not obtain data on the real situation. That is, we're not given information about how much money was invested by market participants in assets. Instead, there is a tick volume in the forex market, which reflects the quantitative index of price movement for a certain period of time and it is reasonable to use it. There are even tick volume indicators.