Book value per share is a company’s equity value divided by its total shares outstanding. It shows how much accounting book value is attributed to each share based on the balance sheet rather than the market price.
How book value per share works
This metric starts with shareholders’ equity, which is the value of a company’s assets minus its liabilities under accounting rules. That figure is then divided by the number of shares outstanding to estimate the book value attached to each share.
Because it is balance-sheet based, book value per share reflects recorded accounting value rather than what investors are currently willing to pay in the market. It is often discussed alongside the price-to-book ratio, which compares market price with book value.
What book value per share can indicate
Book value per share can help describe the relationship between a company’s reported net assets and its share count. In asset-heavy businesses, it may provide a clearer reference point than in companies whose value depends more on intangible assets, growth expectations, or business quality.
A higher figure does not automatically mean a stock is undervalued, and a lower figure does not automatically mean it is expensive. It is only a narrow accounting-based reference point.
Limits of book value per share
Book value per share has important limitations. It depends on accounting carrying values, which may differ meaningfully from economic reality. It may also be less informative for businesses where brands, software, network effects, or internally developed intangibles drive value but are not fully reflected on the balance sheet.
Share issuance, buybacks, write-downs, and changes in equity can also affect the metric, so it should be interpreted in context rather than used on its own.
Book value per share in glossary context
As a glossary term, book value per share is best understood as a simple per-share accounting measure. It does not by itself explain valuation quality, future returns, or whether a stock is attractive. Its role here is definitional and contextual rather than analytical.
FAQ
Is book value per share the same as market price per share?
No. Book value per share is based on accounting equity per share, while market price per share reflects what investors currently pay in the market.
Can book value per share be negative?
Yes. If a company has negative shareholders’ equity, book value per share can also be negative.
Does a low share price compared with book value per share always mean undervaluation?
No. It may reflect business weakness, poor asset quality, or limits in the usefulness of book-based valuation for that company.