HomeFinance & EconomicsStartups & Venture CapitalWhat is Dilution?
Finance & Economics·2 min·Updated Mar 11, 2026

What is Dilution?

Dilution of Ownership

Quick Answer

Dilution refers to the reduction in ownership percentage of existing shareholders in a company due to the issuance of new shares. This often occurs when a startup raises additional capital by selling equity to new investors.

Overview

Dilution occurs when a company issues new shares, which increases the total number of shares available. This can happen during funding rounds when startups seek investment to grow their business. As new shares are created and sold to investors, the percentage of ownership that existing shareholders hold in the company decreases, even though the total value of the company may increase with the new investment. For example, consider a startup with 1,000 shares owned by its founders. If the company decides to raise money by issuing an additional 500 shares to new investors, the total number of shares will increase to 1,500. The founders' ownership percentage drops from 100% to about 67%, even though the value of their shares may rise if the investment helps the company grow. Understanding dilution is crucial for founders and investors alike in the startup and venture capital world. It affects not only the ownership stakes but also the control over the company and the potential financial returns. Investors need to consider how much of their ownership they are willing to dilute when participating in funding rounds, while founders must balance the need for capital with the desire to maintain control.


Frequently Asked Questions

Dilution is primarily caused by the issuance of new shares to raise capital. This often happens during funding rounds when startups need additional money to grow and attract new investors.
Existing shareholders will see their ownership percentage decrease when new shares are issued. Although their total number of shares may remain the same, their claim on the company's profits and decision-making power is reduced.
While dilution cannot be completely avoided if a company needs to raise funds through equity, it can be managed. Founders can negotiate terms with investors or consider alternative financing methods, such as debt, to limit dilution.