A company has a stated number of shares outstanding, yet a market-data page shows a smaller free-float figure. The two numbers can both be meaningful because they describe different sets of shares.
Free float generally concerns shares considered available for public market trading under a specified methodology. Strategic or restricted holdings may be excluded. The precise classification matters: different data providers and index methodologies can apply different rules.
MSCI’s investable-market methodology defines free float in relation to shares available to international public equity investors and distinguishes strategic from non-strategic holdings. Use the applicable current methodology for the index or dataset you are analysing, rather than treating that definition as the only possible one.
Work through a simplified example
Imagine a company with 100 million shares outstanding. Under an illustrative classification, 40 million are excluded from float, leaving 60 million in the float calculation. At a hypothetical price of 5 currency units, total market capitalisation would be 500 million, while the simplified float-adjusted amount would be 300 million. Real methodologies may include additional adjustments.
The example does not establish how many shares will trade tomorrow. A share being available for trading does not mean its holder plans to sell it. Free float is therefore different from daily trading volume and should not be used as a direct forecast of price movement.
- Record the provider and definition.
- Check the date of the share count.
- Look for recent corporate actions or changes in major holdings.
- Keep total and float-adjusted figures clearly labelled.
If two services disagree, inspect their dates and classification rules before deciding one is wrong. A difference may reflect methodology or timing.
Free float is one input for understanding a security and some index weights. It does not, on its own, make a share attractive, safe or likely to rise.

