Stock Dilution

What is Stock Dilution?

Stock Dilution is defined as decrease in the percentage of the ownership held by the existing shareholders of the company because of the new shares issued by the company and such a dilution can happen either by offering shares in exchange of funds or can also be due to conversion of dilutive securities like stock options, convertible debt etc.


Stock dilution is a corporate action that decreases the ownership of the existing stockholders of a company by means of issuing new stocks in the market. The new stock increases the total outstanding shares in the market, which results in dilution of the ownership of the existing shareholders. An increase in the outstanding shares can be a result of a primary or secondary market offering, which includes an Initial Public OfferingInitial Public OfferingAn initial public offering (IPO) occurs when a private company makes its shares available to the general public for the first time. IPO is a means of raising capital for companies by allowing them to trade their shares on the stock more, issuance/conversion of convertible bonds, warrants into stock, and issuance of preferred stock, new stock options, etc.

Examples of Stock Dilution with Calculation

In the examples below, the three primary sources of stock dilution calculation have been explained

‘Mber Inc’ is a design and engineering startup and has a new coffee mug that customizes the drinking temperature of coffee or tea. Year ending 2018, Mber had a common stock outstanding of 100,000 shares with a market capitalizationMarket CapitalizationMarket capitalization is the market value of a company’s outstanding shares. It is computed as the product of the total number of outstanding shares and the price of each more of $1 million and $100 of net profits. Merry Andrew is an individual investor who bought 10,000 shares of Mber on 31st Dec 2018. When the company announced its earningsEarningsEarnings are usually defined as the net income of the company obtained after reducing the cost of sales, operating expenses, interest, and taxes from all the sales revenue for a specific time period. In the case of an individual, it comprises wages or salaries or other more, Merry was merrier to know that his investment has earned $10 of Mber’s profits.

Stock Dilution

You are free to use this image on your website, templates etc, Please provide us with an attribution linkHow to Provide Attribution?Article Link to be Hyperlinked
For eg:
Source: Stock Dilution (

#1 – Stock Dilution through Issuance of New Shares to Employees

In 2019, Mber issues 100,000 stock optionsStock OptionsStock options are derivative instruments that give the holder the right to buy or sell any stock at a predetermined price regardless of the prevailing market prices. It typically consists of four components: the strike price, the expiry date, the lot size, and the share more to its CEO. As of now, it has an outstanding shareOutstanding ShareOutstanding shares are the stocks available with the company's shareholders at a given point of time after excluding the shares that the entity had repurchased. It is shown as a part of the owner's equity in the liability side of the company's balance more of 100,000 shares. But eventually, when the CEO exercises the stock options, Mber will have a diluted share count of 200,000 shares.

Well, after this, nothing is merry for Merry, our investor. He still owns 10,000 shares, and once the company issues the additional stock, his ownership stake will be diluted. The initial outstanding share count was 100,000, and the profit earned was $100, Merry was entitled to $10 of the profits, which were 10% (10,000 / 100,000). After the issuance of the additional shares in the market, Merry’s ownership will not be 10% but would topple to 5% (10,000 / 200,000) of the total outstanding shares, which means, for every $100 profit, Merry would only earn $5. Don’t you feel bad for Merry? The CEO just got lucky with this move; he gets his hands on 50% (100,000 / 200,000) shares of the company.

#2 – Issuance of New Shares for Expansion

Let’s assume Mber wants to expand its business, but the temperature control mug is yet to be a hit among the masses. That is a problem! The management thinks the solution to this problem is to buy out its rival, Vecup. Since Mber hasn’t sold any of the mugs and has no money to make a move; it would exchange its own shares to Vecup shareholders. Confused?

Breaking it down – Mber will take ownership of Vecup in exchange for new shares issued in the market. Vecup being a massive player in the market has a market capitalization of $20 billion, and Mber having a market value of $10 per share will need to make an issuance of 2 billion new shares to crack this deal. This will dilute the ownership of its existing shareholders, including Merry, by 200,000 times. Looking at the larger picture, Merry’s cut from the profit after the merger of Member and Vecup looks much smaller than his cut from the profit of Member alone. But the net profit would be much bigger. Merry would receive a small share from a bigger profit of Member and Vecup in exchange for his original investment of a big share from a small profit. Simply put, it is a smaller piece out of a bigger cake.

#3 – Secondary Offering

Stock Dilution can also be done by secondary issuance. Earlier, when Mber issues 100,000 shares to its CEO, the shareholders are impacted negatively since it is offered at a nominal price. Before the management issues the new shares to the CEO, Member starts to make it a hit among the masses with the cutting edge technology and the state of the art service to its customers. Mber’s shares a burgeon and sell the additional 100,000 shares at $500 per share. If the share price has increased without any change in its intrinsic value, Merry will be merrier than ever.

Mbers worth increased not just because of the mass popularity, the intrinsic value of the company increased as it traded $50 million for the 100,000 additional shares that were issued in the market. Merry’s 5% stake, i.e., 10,000 shares out of 200,000 shares, now have a whopping $2.5 million value.

Advantages of Stock Dilution

  • For an organization that wants to reduce external ownership, dilution helps in increasing internal ownership by issuing additional stocks to its employees.
  • Even if the shares are issued in the open market, the valuation of the company increases in the market with the additional inflow of funds made by the increase in the outstanding shares.
  • When a company issues shares priced higher than the intrinsic value, an external shareholder will always benefit without the ownership stake being diluted.


  • Investors hate dilution as, in most cases, it represents a transfer of ownership from external shareholders to insiders.
  • Reduces the ownership stake of existing shareholders;

Final Thoughts

  • Stock Dilution decreases the ownership stake of existing shareholders in a company.
  • It is one of the most critical factors for a startup.
  • An investor can benefit, make losses, or have no change in his position depending on the situation.

Recommended Articles

This has been a guide to what is Stock Dilution and its definition. Here we discuss the three primary sources of stock dilution along with calculation, examples, advantages, and disadvantages. You can learn more about accounting from the following articles –