Before reading a stake, check the denominator
A simple illustration of why an ownership percentage needs a dated share count.

Start with the public record
Issuer shareholder pages are a starting point for share and holder information. Concurrent Technologies, for example, maintains a shareholder-information page. This guide does not reproduce a current ownership table or assume that a webpage alone captures every subsequent change.
An explicit hypothetical
Suppose a fictional business has 100 shares and a holder owns 10. The holder owns 10%. If 25 new shares are issued to others and the original holder still has 10, the fraction becomes 10 divided by 125, or 8%. This is arithmetic for illustration, not a real fundraising or a predicted change.
What the example does not tell you
The percentage alone cannot establish whether the holder’s investment has gained or lost value. The price, the capital received and what the business does with it matter to an economic assessment. A smaller fraction and a lower monetary value are not automatically the same conclusion.
A document habit
When reading a real stake, note the date, the class of securities and the denominator used. Check later issuer disclosures before making comparisons. This article makes no calculation about a named company’s present ownership or public float.