This indicator attempts to detect moments of abnormal and accelerating increase in volume. Because pumps happen over short time frames, this script is potentially better used on smaller timeframes (1 - 15 minutes). It takes two inputs: [1] The length of the lookback for the volume rate of change (vroc) calculation (default=20), and [2] The threshold over which a pump is determined to have happened (0-100, default=50). The vroc has been normalised to a result between 0 (no rate of change) and 100 (maximum rate of change the asset has ever undergone to date).