
The weighted average shares outstanding (WASO) is a financial metric that helps investors and analysts understand a company's capital structure and earnings per share (EPS) calculation. It's a crucial concept in financial analysis.
WASO takes into account the varying number of shares outstanding over a specific period, giving more weight to the periods with higher shares outstanding. This is because the company's capital structure can change significantly over time, affecting its EPS.
To calculate WASO, you need to know the number of shares outstanding for each period and the corresponding weight, which is usually the number of days in that period.
What is Weighted Average Shares Outstanding?
Weighted Average Shares Outstanding (WASO) is a calculation that takes into account the changing number of shares outstanding over time.
It's a key metric for investors and analysts to understand a company's financial performance and growth.
The calculation is based on the number of shares outstanding at the end of each period, weighted by the time each period represents.
What Are Weighted Average Shares Outstanding?
Weighted Average Shares Outstanding is a key metric used in finance to calculate the average number of shares outstanding over a specific period.
It takes into account changes in the number of shares outstanding due to stock splits, stock dividends, or new share issuances.
The formula for Weighted Average Shares Outstanding involves multiplying the number of shares outstanding by the weight, which is the time period for which the shares were outstanding.
For example, if a company had 100 shares outstanding for 6 months and 150 shares outstanding for the remaining 6 months, the Weighted Average Shares Outstanding would be calculated using these two numbers.
Importance of Weighted Average Shares Outstanding
Calculating a weighted average of outstanding shares is crucial for determining a company's earnings per share (EPS), a key metric for potential investors.
Potential investors rely on EPS as an indicator of a company's profitability, and they compare it with the EPS of other companies to make informed investment decisions.
A company's EPS can vary significantly depending on the number of shares used in the calculation, as illustrated by a company that issues new shares halfway through the year, increasing the total shares outstanding from 100,000 to 200,000.
If the company reports earnings of $200,000, using the original 100,000 shares would result in an EPS of $2, while using the new total of 200,000 shares would result in an EPS of $1.
Calculating Weighted Average Shares Outstanding
Calculating weighted average shares outstanding is a straightforward process that involves finding the common shares count at the beginning of the year and the changes in common shares during the year.
The first step is to find the common shares count at the beginning of the year and the changes in common shares during the year. This is essential in determining the weighted average shares outstanding.
To calculate the updated common shares after each change, you need to consider the portion of the year between each change and the next change. This is where the concept of weights comes in.
Weights are calculated by dividing the number of days outstanding by 365 or the number of months outstanding by 12. For example, if a company issues new shares on April 1st, the weight for the first three months would be 3/12.
Here's a simple example to illustrate this:
As you can see, the weighted average shares outstanding is calculated by summing up the weighted average share calculations for each period.
The weighted average shares outstanding can also be calculated using a formula: (Number of shares outstanding x Weight) + (Number of shares outstanding x Weight) + ... = Total weighted average shares outstanding.
For instance, if a company has 1 lakh shares initially and issues 10,000 shares on April 1st, the weighted average shares outstanding would be calculated as:
1,00,000 x 3/12 = 25,000
1,10,000 x 9/12 = 82,500
Total weighted average shares outstanding = 25,000 + 82,500 = 1,07,500 shares.
This is just a basic example, but the concept is the same for any company that issues new shares or repurchases existing ones.
Impact of Stock Splits and Buybacks
Stock splits and buybacks can significantly impact the number of shares outstanding, making it essential to understand how they affect a company's weighted average shares outstanding.
A stock split occurs when a company decides to divide each existing share into a certain number of new shares. For example, if a company has 50,000 shares outstanding and orders a 2-1 stock split, there would be 100,000 shares outstanding.
The value of the shares remains the same before and after the stock split, so the investor doesn't gain or lose from this measure. However, the weighted average number of shares outstanding doubles as a result of the stock split.
A stock split can be useful for companies with extremely high stock prices, as it makes the shares more affordable for retail investors. However, it can also lead to a decrease in the market capitalization of the company.
On the other hand, share buybacks can reduce the number of shares outstanding by allowing investors to be entitled to more earnings per share (EPS). When a company buys back its shares, it signals to investors that the company believes its current share price is undervalued.
Here's an example of how share buybacks can impact the number of shares outstanding:
In the case of a stock split, the weighted average number of shares outstanding doubles, as illustrated in the example of a 2-1 stock split resulting in 100,000 shares outstanding.
Calculating Examples and Key Takeaways
Calculating weighted average shares outstanding can be a complex task, but understanding the basics is essential. To calculate the weighted average, you need to consider the number of shares outstanding and the portion of the reporting period those shares covered. This involves multiplying the number of shares by the weight of the time period.
For example, if a company has 1 lakh shares initially and issues 10,000 shares on 1st April, the weighted average shares outstanding would be calculated as 25,000 shares for the first 3 months and 82,500 shares for the remaining 9 months, resulting in a total of 1,07,500 shares.
Here are some key takeaways to keep in mind:
- The weighted average of outstanding shares is a calculation that reflects any changes in the number of a company's outstanding shares over a reporting period.
- Events that can cause the number of a company's outstanding shares to fluctuate include share buybacks, employees exercising stock options, the issuance of new shares, and the retirement of existing shares.
- To calculate the weighted average of outstanding shares, take the number of outstanding shares and multiply the portion of the reporting period those shares covered; do this for each portion and then add the totals together.
- It's essential for a company to have an accurate weighted average of outstanding shares because the number is used to calculate key financial measurements, such as earnings per share (EPS).
Calculation Examples
Calculating weighted average shares outstanding can be a bit tricky, but let's break it down with some examples.
The first step is to find the common shares count at the beginning of the year and the changes in common shares during the year. This is essential in calculating the weighted average shares outstanding.
To calculate the weighted average shares outstanding, you need to weight the shares outstanding by the portion of the year between this change and the next change. This is done by dividing the number of days outstanding by 365 (or months outstanding by 12).
Let's look at some examples to make it clearer. In Example 1, Company A had 1 lakh shares initially and issued 10,000 shares on 1st April. The calculation of weighted average shares outstanding would thus be – 1,00,000 X 3/12 = 25,000 and 1,10,000 X 9/12 = 82,500. Thus, the weighted average shares calculated at the end of the year stand at 25,000 shares plus 82,500 shares, i.e., 1,07,500 shares.

Here are some key takeaways from the examples:
- The weighted average shares outstanding calculation involves finding the common shares count at the beginning of the year and the changes in common shares during the year.
- You need to weight the shares outstanding by the portion of the year between this change and the next change.
- The calculation of weighted average shares outstanding can be complex, but it's essential for accurate financial calculations.
For example, in Example 2, Company B had a total outstanding of 5 lakh shares at the beginning of the financial year 2019-20. The weighted average shares calculation is thus made below.
Thus, the outstanding weighted average shares of a company for the given year is 5,82,500 shares.
Key Takeaways
Calculating the weighted average of outstanding shares is a crucial step in financial reporting. This calculation helps reflect changes in the number of a company's outstanding shares over a reporting period.
The number of outstanding shares can fluctuate due to share buybacks, employees exercising stock options, new share issuances, and the retirement of existing shares. These events can have a significant impact on a company's financial measurements.
To calculate the weighted average, you multiply the number of outstanding shares by the portion of the reporting period they covered, and then add up the totals. This process can be complex, but it's essential for getting an accurate picture of a company's financial health.

The weighted average of outstanding shares is used to calculate key financial measurements like earnings per share (EPS). This is why it's so important to get this calculation right.
Here are some common events that can affect the number of outstanding shares:
- Share buybacks
- Employees exercising stock options
- New share issuances
- Retirement of existing shares
Frequently Asked Questions
What is the difference between shares outstanding and weighted average?
Shares outstanding refers to the total number of shares issued by a company, while weighted average shares takes into account the timing of changes in shares outstanding to provide a more accurate picture of a company's equity
What is the weighted average value of shares?
The weighted average value of shares is a calculation that takes into account the price of each share, giving more importance to the shares bought at a higher price. It's calculated by multiplying the number of shares by their respective prices, adding them up, and then dividing by the total number of shares.
How to calculate weighted average number of shares in Excel?
To calculate the weighted average number of shares in Excel, use the SUMPRODUCT function to multiply each value by its corresponding weight, then divide the result by the sum of the weights. This process involves using the SUM function to calculate the total weight and applying it to the SUMPRODUCT result.
Sources
- https://www.wallstreetmojo.com/weighted-average-shares-outstanding/
- https://www.fool.com/investing/how-to-calculate/weighted-average-number-of-outstanding-shares/
- https://www.wallstreetprep.com/knowledge/shares-outstanding/
- https://groww.in/p/weighted-average-shares
- https://www.investopedia.com/ask/answers/05/weightedoutstandingshares.asp
Featured Images: pexels.com