The average volume in stocks is calculated by summing the total volume of trades over a specified period and then dividing by the number of trading days within that period. Here's how it's done:
- Total Volume Over a Period: Add up the total volume of shares traded for each day over the calculation period. For example, if you're calculating the average daily trading volume (ADTV) for 30 days, you would sum the daily volumes for each of those days.
- Number of Trading Days: Identify the total number of trading days within the calculation period. Typically, this is the same as the number of days you're using to calculate the average, but it's important to specify whether you're using business days or weekdays.
- Calculate the Average: Divide the total volume by the number of trading days to get the average volume. This gives you the average number of shares traded per day over the specified period.
For instance, if you want to calculate the ADTV of a stock XYZ over the last 30 days, you would:
- Sum the volume of shares of XYZ traded each day for the last 30 days, which might give you a total of 10,000 shares.
- Since you're using 30 days, you would divide this total by 30 to get an average of 333.33 shares per day1.
This method provides a robust way to assess the liquidity and market interest in a security, helping traders and investors make informed decisions about entering or exiting positions.