Start by calculating the ownership percentage
A fictional company has 100 shares, of which an investor owns ten. The investor’s stake is 10%. If the company issues 25 more shares and this owner does not participate, the total becomes 125 and the stake becomes 8%. The numerator remains ten securities; the denominator changed. This distinction matters when reviewing reports of a reduced stake: selling the owner’s own securities is not the only possible explanation. Reconstructing the event requires both the owner’s holding and the total number of relevant shares.
A reduced percentage does not by itself calculate a cash loss. Suppose the pre-issue educational equity value is 10,000 monetary units, or 100 per share. Selling 25 new shares at 100 gives the company 2,500. Under the strict assumption that this money is added to value without costs or other changes, the result is 12,500 across 125 shares: again 100 per share. The old owner’s percentage fell, but the calculated value of the ten shares stayed the same.
The issue price matters
If the same model sells the new shares at 60, the company receives only 1,500. The old notional value plus new money is 11,500, or 92 per each of 125 shares. That is different economics. It is not a valuation of a real company: future effects of the funds, market reaction, expenses, rights attached to the new shares and changed risk are excluded. The same label, “new issue,” does not make two situations equivalent. Show the assumptions instead of declaring every denominator increase an automatic deterioration.
In a primary-market issue, funds from the new securities go to the issuer.[1](#source-cm-primary) Their receipt must therefore be considered together with the change in share count. If an owner sells old securities, the cash follows a different route. Money actually received by the seller cannot be added to company value. On conversion of a separate liability, the claims structure may change without new cash; that requires a different starting model because mechanically adding an amount as if it were a cash issue could count one resource twice.
Shares, votes and metrics are different quantities
The number of shares is not always the number of identical voting units. Categories and special conditions are defined by documents. Earnings per share also requires distinguishing a period measure from the number of securities on a particular date. Detailed reporting methodology is outside this guide. The essential point is that participation percentage, votes and monetary value are different quantities. The guide on shares explains the general nature of rights, while issuer and security identifiers help keep categories separate.
For a news check, make a “before — change — after” table: quantity, rights structure, money received by the company, and liabilities disappearing or arising. Mark which values come from documents and which are analytical assumptions. If current price is used as a proxy for total equity value, remember the limits of market capitalization. The model does not recommend joining or avoiding an issue; it shows why dilution cannot be assessed fully without the price and terms of the financing.
Do not confuse an issue with a split
In a new cash issue, resources and new owners enter the model at the same time. In a proportional split, the unit of account changes but no such cash arrives. If both events are explained by saying only that “there are more shares,” the important distinction is lost. Check whether each former owner’s quantity changed proportionally and what the company itself received.
Ask which denominator the reported percentage uses: total capital, voting securities or a particular category. Equal percentages on different bases do not describe the same right. On conversion, establish which former claims end and which new rights arise. A placement for a non-cash asset requires a separate valuation of the incoming resource; an arbitrary cash amount cannot be used without explanation. The example does not solve these tasks, but shows where they enter the calculation. A transparent model leaves unknown parameters unknown and does not treat a quantity change alone as proof that business value rose or fell.