I read and interpret about 4 different chart for that, you cant rely on one chart to show trends like dilution or accumulation. I have to look at 3-4 at the same time to get an idea whats happening and observe the trading. i do it for every stock i trade just to see if there is underlying buying/selling, dumping/dilution, it can show you which way a stock is going to go days or weeks ahead, not right all the time cause there are unexpected things a company can do. Its not only reading it, it tells a story. Im not much of a technical reader, i just read volume, money and momentum. L2 is more my forte but i use charts for direction of movement...its an art!