Price-to-Book Ratio (P/B) Singapore: Spotting Undervalued Bank and REIT Stocks

Price-to-book ratio (P/B) is a valuation metric that divides a company’s share price by its net asset value (book value) per share, commonly used by Singapore investors to assess whether bank stocks like DBS or REITs are trading above or below the accounting value of their underlying assets.

Not financial advice. All figures for educational reference only. Data as at August 2026.

Last updated: August 2026

Key Takeaways

• Price-to-book ratio (P/B) divides a company’s share price by its net asset value (book value) per share, showing whether the market values a company above or below its accounting net worth.
• Singapore’s three local banks — DBS, OCBC and UOB — are commonly analysed using P/B ratio alongside return on equity (ROE), since banking is a balance-sheet-heavy business where book value is meaningful.
• S-REITs are also frequently assessed on a Price/NAV basis, a close cousin of P/B, since REIT NAV per unit is regularly disclosed and directly comparable to unit price.
• A P/B ratio below 1.0 suggests a stock trades below its accounting net asset value, which can indicate undervaluation, or may reflect market concerns about asset quality, earnings sustainability or governance.
• P/B ratio is most meaningful for asset-heavy sectors like banks, REITs and property developers, and far less useful for asset-light sectors like technology or services companies where intangible value dominates.

What Is Price-to-Book Ratio?

Price-to-book ratio (P/B), also called the price-to-net-asset-value ratio, is a valuation metric calculated by dividing a company’s current share price by its book value per share — where book value is the company’s total assets minus total liabilities (i.e., shareholders’ equity), divided by the number of outstanding shares. It answers a simple question: how much is the market paying for each dollar of the company’s accounting net worth?

A P/B ratio of 1.0 means the stock trades exactly at its book value. A P/B above 1.0 means the market is pricing the company at a premium to its accounting net assets — often justified by strong profitability, growth prospects, or intangible value like brand and franchise strength. A P/B below 1.0 means the stock trades at a discount to book value, which can signal an undervalued opportunity, but can equally reflect genuine concerns about asset quality, future earnings, or governance that the market has priced in.

In Singapore, P/B ratio is most commonly applied to the three local banks (DBS, OCBC, UOB), where balance sheet strength and book value are core to how the business is valued, and to S-REITs, where the closely related Price/NAV metric compares unit price to disclosed net asset value per unit.

How Does Price-to-Book Ratio Work in Singapore?

To calculate P/B, investors take the current share price and divide it by the most recently reported book value (shareholders’ equity) per share, which is disclosed in a company’s quarterly or annual financial statements. For banks, book value is heavily influenced by loan loss provisions, capital adequacy and retained earnings. For REITs, the equivalent NAV per unit is calculated from independently appraised property valuations minus liabilities, divided by units outstanding, and is updated periodically (often semi-annually) as valuations are refreshed.

Investors typically compare a company’s current P/B ratio to its own historical range and to peers in the same sector, since “cheap” or “expensive” is a relative judgment that depends heavily on sector norms — a P/B of 1.2 might be considered expensive for a bank but cheap for a high-growth technology company.

Beyond the headline number, investors often examine how a company’s P/B ratio has trended over multiple years relative to its return on equity (ROE), since a rising ROE without a corresponding rise in P/B can signal the market has not yet re-rated the stock to reflect improved profitability — a pattern some value-oriented Singapore investors specifically look for among the local banks and larger S-REITs. Conversely, a persistently low P/B alongside declining or volatile ROE more often reflects genuine, structural business challenges rather than a simple market mispricing, underscoring why P/B should never be used as a standalone screening criterion without further fundamental analysis.

Source: TKN illustrative ranges based on general SGX-listed sector valuation patterns, August 2026. Actual ratios fluctuate with market conditions and should be checked against live data.

Price-to-Book Ratio Example

A Singapore bank reports shareholders’ equity of S$60 billion and has 2.6 billion shares outstanding, giving a book value per share of roughly S$23.08. If the stock is currently trading at S$32.00, its P/B ratio is 32.00 / 23.08 ≈ 1.39x, meaning the market values the bank at a 39% premium to its accounting net worth — typically justified if the bank generates a strong return on equity (ROE) well above its cost of capital.

By comparison, a REIT reports NAV per unit of S$1.50, but its units trade at S$1.20 on SGX, implying a Price/NAV of 1.20 / 1.50 = 0.80x, or a 20% discount to NAV. This discount could reflect genuine undervaluation, or market concerns about the REIT’s gearing, portfolio quality, or sector headwinds — further analysis of the underlying business is needed before concluding the discount represents a buying opportunity.

Advantages of Price-to-Book Ratio

• Simple, widely available metric. P/B ratio can be calculated from any company’s basic balance sheet and current share price, making it one of the most accessible valuation tools for retail investors.
• Particularly useful for asset-heavy sectors. For banks, REITs and property companies, where the balance sheet closely reflects the business’s real economic value, P/B is a meaningful and widely referenced valuation anchor.
• Helps identify potential value opportunities. Stocks trading persistently below their historical or peer-average P/B range can flag situations worth deeper investigation, especially if fundamentals have not deteriorated to match.
• Complements earnings-based metrics. Used alongside price-to-earnings (P/E) and return on equity, P/B rounds out a more complete valuation picture, especially useful when earnings are volatile or temporarily depressed.

Risks and Limitations

• Book value can be an imperfect measure of true worth. Accounting book value may not reflect the current market value of assets, brand value, or off-balance-sheet liabilities, especially for older or historically acquired assets.
• Low P/B is not automatically ‘cheap.’ A stock trading well below book value may be reflecting real, justified concerns about future earnings, asset quality or governance rather than a market mispricing.
• Limited relevance for asset-light businesses. P/B is far less meaningful for technology, services or intangible-asset-heavy companies, where most of the value lies outside the traditional balance sheet.
• REIT NAV updates are periodic, not real-time. Unlike share price, which updates continuously, REIT NAV per unit is typically only refreshed semi-annually or annually, meaning Price/NAV can lag real-time changes in underlying property values.

P/B Ratio vs Price/NAV (for REITs)

Source: TKN comparison of standard equity valuation and REIT valuation conventions, August 2026.

The Bottom Line

Price-to-book ratio remains one of the most practical tools for Singapore investors analysing banks and REITs, where balance sheet value closely tracks real business worth. Used in isolation it can mislead, but paired with return on equity, distribution yield and sector context, P/B ratio helps investors judge whether a stock is genuinely attractively priced or cheap for a reason.

Related Terms

• NAV in a REIT (Net Asset Value)
• Blue Chip Stocks Singapore
• Dividend Yield Trap Singapore
• Pre-IPO Investing Singapore