Dilution is the reduction in your ownership percentage when a company issues new shares. Your holding does not shrink, but the number of claims on the same business grows, so each share represents less of it. A company can grow revenue every year and still deliver nothing per share.
How to measure it in one step
Find diluted weighted average shares outstanding on the income statement, directly beneath earnings per share, and compare it across five or ten years. That single series tells you whether management has been funding the business with your ownership. Use the diluted figure rather than basic, because diluted counts the options and restricted stock already promised to employees.
Then do the division that matters. Revenue per share, and free cash flow per share, are what you own. A company growing revenue 20% a year while issuing 15% more shares is growing your position by roughly 5%.
Where the shares come from
Stock compensation. The largest source at most technology companies. Paying employees in equity is a real expense settled in your ownership rather than in cash, which is why stock-based compensation being added back in adjusted earnings is the most consequential adjustment companies make.
Acquisitions paid in stock. Sometimes excellent. A company using expensive shares to buy a cheaper business creates value. The reverse destroys it quietly.
Raising capital. Issuing shares to fund operations or repair a balance sheet. For a young company this can be necessary and correct. For a mature one it is usually a signal that something has broken.
When dilution is acceptable
The test is whether the money raised earns more than it cost. Issuing 10% more shares to fund a project that permanently raises earnings by 30% leaves every existing holder better off. Issuing 10% to cover salaries in a business that is not compounding leaves them poorer, and it repeats every year.
This is a capital allocation question, and it is why the share count belongs next to ROIC rather than in a footnote. High returns on capital make issuing shares defensible. Low returns make it a transfer from owners to employees and sellers.
The buyback that is not a buyback
Many companies repurchase shares in the same year they issue them, and report the repurchase enthusiastically. Ignore the dollar amount spent and look only at whether the diluted share count actually fell. If it is flat while billions went to buybacks, the buyback was mopping up stock compensation, not returning capital to you. Both things can be reasonable, but only one of them increases your ownership.
A share count that falls year after year is one of the more reliable markers of a company run for its owners, and it flows directly into total shareholder return.
See the share count trend before you buy
Stock Simplifier charts diluted shares outstanding alongside revenue and free cash flow for any US stock, so you can see per-share growth rather than headline growth. Free to start.
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Frequently asked questions
Related
- Stock-based compensation, the largest source of dilution at most technology companies.
- Total shareholder return, where a falling share count shows up in what you earn.
- Capital allocation, the wider question of what management does with your money.
- ROIC, the return that decides whether issuing shares was defensible.