Book Value Per Share: Formula, Tangible Book Value & Shipping NAV Guide

Book value per share (BVPS) is the accounting net worth of a company allocated to each individual share. Take everything the company owns, subtract everything it owes, and divide what is left by the number of shares outstanding. The result is, in theory, what each share would be worth if the business were wound up at the values recorded on its balance sheet.

For asset-heavy businesses — shipping, mining, energy infrastructure, banks — book value carries real analytical weight. These companies hold tangible assets (vessels, mines, pipelines, reserves) that are recorded at historical cost or fair value. That makes BVPS a useful sanity check against the market price, which is exactly why I keep it in my toolkit alongside cash flow and dividend metrics.

Book Value Per Share Formula

Book Value Per Share = (Total Shareholders' Equity − Preferred Equity) / Shares Outstanding

The components:

Total shareholders' equity: the balance-sheet residual — total assets minus total liabilities
Preferred equity: subtracted because preferred shareholders rank ahead of common shareholders in a liquidation
Shares outstanding: use the diluted share count for a conservative figure

Worked example:
Total shareholders' equity: $2,400m
Preferred equity: $0
Shares outstanding: 120m
Book Value Per Share = $2,400m / 120m = $20.00 per share

If the stock trades at $14, it sits at a 30% discount to book (P/B of 0.70×). If it trades at $30, it carries a 50% premium (P/B of 1.50×). The discount or premium is where the analysis really begins.

Tangible Book Value Per Share

Standard book value includes intangible assets — goodwill, brand value, capitalised development costs. For hard-asset investors, the more honest figure is often tangible book value per share, which strips these out:

Tangible BVPS = (Shareholders' Equity − Preferred Equity − Goodwill − Intangibles) / Shares Outstanding

Why this matters: a mining company that overpaid for an acquisition will carry large goodwill on its balance sheet. That goodwill inflates reported book value but represents no sellable asset. When the deal disappoints, goodwill gets written down — and book value falls overnight without any operational change. Tangible book value avoids that trap by counting only assets you could actually monetise.

Book Value, NAV and Shipping

In shipping, book value per share is closely tied to net asset value (NAV) per share — but they are not identical. Book value uses the carrying value of vessels (purchase cost less accumulated depreciation). NAV adjusts vessels to their current market value based on recent sale-and-purchase transactions for comparable ships.

Measure	Vessel valuation basis	When it's higher
Book value	Historical cost − depreciation	When ships were bought cheaply years ago
NAV	Current second-hand market value	When asset values have risen (strong rate cycle)

During a strong freight cycle, vessel market values often exceed depreciated book value, so NAV runs above book value. In a downturn, the reverse happens and NAV can fall below book. This is precisely why so many shipping stocks trade below their book and NAV: the market is pricing in where it thinks asset values are heading, not where they are today. I weigh the cycle stage heavily before treating a sub-NAV shipping stock as cheap.

Price-to-Book in Hard Assets

Book value per share is the denominator of the price-to-book ratio (P/B). Across the sectors I track, normal P/B ranges differ widely:

Sector	Typical P/B range	Below 1.0× signals
Tanker shipping	0.5× – 1.3×	Cyclical trough or NAV scepticism
Diversified mining	1.5× – 3.0×	Rare — usually deep pessimism
Precious metals miners	1.2× – 2.5×	Gold-price bear market
Midstream / pipelines	1.5× – 3.5×	Distribution-cut fears
Banks & lenders	0.6× – 1.5×	Asset-quality / ROE concerns

Why a Low P/B Is Not Automatically Cheap

A stock trading at 0.6× book looks like a bargain — but book value is only as good as the assets behind it. Three traps to check before treating a discount as opportunity:

Impending write-downs: if vessel or mine asset values have fallen, reported book value is stale and will be cut. The "discount" disappears with the next impairment.
Poor returns on equity: a business that earns 4% on its book equity deserves to trade below book. Cheap-on-assets, expensive-on-earnings. Always pair P/B with return on equity.
Cash burn: a company losing money is eroding book value every quarter. Today's discount can become tomorrow's fair value through shrinkage, not a re-rating.

My rule of thumb: a sub-1.0× P/B is genuinely interesting only when (1) tangible book is solid and recently marked, (2) return on equity is positive and improving, and (3) the dividend is covered by free cash flow. A cheap multiple on a shrinking, low-return balance sheet is a value trap, not a value play.

Book Value and Dividend Safety

Book value also informs my view on dividend safety. Companies paying out more than they earn are, in effect, distributing book value — eroding the equity base over time. That is sometimes acceptable in capital-light businesses, but in capital-intensive shipping and mining it is a red flag, because the asset base needs reinvestment to maintain earning power.

For the full picture on how balance-sheet strength drives long-term returns, see also Net Debt, Enterprise Value and Free Cash Flow.

Common Mistakes With Book Value

Over the years I have seen the same book-value errors repeated by income investors chasing apparent bargains. Three stand out:

Treating book value as a fixed floor. Book value is an accounting estimate, not a guaranteed liquidation value. Ships, mines and properties rarely sell for their carried value in a forced sale — distressed asset disposals routinely fetch 60–80% of book. The "margin of safety" a low P/B seems to offer can evaporate exactly when you need it.
Ignoring share-count dilution. A company that repeatedly issues new shares to fund losses or acquisitions grows total equity while shrinking book value per share. Always track BVPS over several years, not just total equity — the per-share figure is what you actually own.
Comparing across accounting regimes. A US-GAAP company and an IFRS company can carry similar assets at very different book values because of revaluation rules, especially for property and long-lived assets. When I compare a Norwegian shipper to a US peer, I check the accounting basis before reading anything into the P/B gap.

Book value is a useful anchor — but only one input. I pair it with cash generation, returns on that equity, and the realism of the carried asset values before drawing any conclusion about whether a discount is opportunity or warning.

Marco Bozem

Investor & Analyst | Hard Assets, Dividends, Shipping | MB Capital Strategies

Marco analyses shipping, mining and energy stocks with focus on balance sheet strength, dividend sustainability and cycle positioning. All analysis based on public reports. Not investment advice.

Book Value Per Share Tangible Book Value Price-to-Book NAV Shipping Stocks Mining Stocks

Disclaimer: This glossary entry is for educational purposes only and does not constitute investment advice. Valuation multiples are general guidelines and vary by company, sector and market conditions. Always conduct your own research.