Price To Book Ratio
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P/B compares a company's market price per share to its book value per share (assets minus liabilities, divided by shares outstanding), showing how the market values the company relative to its net accounting assets.

It can suggest the market values the company at less than its net asset value, which may indicate undervaluation, but it can also signal that investors expect poor future returns, declining assets, or overstated book values on the balance sheet. Investigate further rather than treating it as an automatic buy signal.

P/B is generally more meaningful for asset-heavy industries like banking, real estate, and manufacturing, where book value closely reflects tangible resources. It's less useful for asset-light industries like technology or services, where a company's real value often lies in intangibles not fully captured on the balance sheet.

Book value only counts assets recorded on the balance sheet under accounting rules, so internally generated intangibles like brand value, patents developed in-house, or a skilled workforce typically aren't included — potentially understating book value and inflating the apparent P/B ratio for such companies.

Yes, if a company's liabilities exceed its assets, book value per share is negative, making the P/B ratio negative and effectively meaningless as a valuation metric. This often signals significant financial distress and warrants closer scrutiny of the company's balance sheet.