A form of price manipulation is buy walls and sell walls done by a handful of individuals with massive holdings, known as whales. once you hear that cryptocurrency markets are volatile, then remember that there are many factors affecting it other than walls, what are the other causes you know?
Yes I have noticed this trend and I can conclude that they are group or collection of people who intentionally bring down the prices of products and then in their free hour, they also pump up the prices and have more gains than any one else would
In situation like this; random individual should pack when it dumps and also sell when it pumps
Follow the sequence sinuosoidally and make your profits