The Accumulation/Distribution indicator is a tool used in finance to analyze price and volume changes. As a knowledgeable professor, I can tell you that this indicator is based on the idea that when volume accompanies a price move, the move is more significant. This tool helps us confirm changes in prices by comparing the associated volume. A rise in the Accumulation/Distribution indicates that the security is being accumulated, while a decline suggests distribution. Furthermore, divergences between the indicator and the security's price signal an imminent change. In such cases, the prices usually reverse to confirm the accumulation/distribution. To calculate this indicator, we add the difference between the daily high and low price if the day's change is positive, and subtract the range if it's negative.