BPS
Book-value Per Share. Net assets divided by shares outstanding, representing the accounting book value attributable to each share
BPS (Book-value Per Share) is calculated by dividing net assets (shareholders' equity plus accumulated other comprehensive income) by shares outstanding (excluding treasury shares). It represents the per-share accounting equity attributable to shareholders and serves as the denominator of PBR (share price / BPS). A high BPS signals substantial 'liquidation value,' while a low BPS relative to share price implies the market is paying a premium for earning power beyond book assets. Because book value does not capture all unrealized gains and losses, actual economic BPS may differ from reported figures.
Calculation
BPS is 'net assets / shares outstanding (net of treasury shares).' Under Japanese GAAP, net assets comprise shareholders' equity (share capital, capital surplus, retained earnings, treasury shares) plus accumulated other comprehensive income (unrealized gains on securities, foreign currency translation adjustments, etc.). IFRS reporters use 'equity attributable to owners of the parent.' Data is available from quarterly earnings releases and annual securities reports, and most broker screening tools compute BPS automatically.
What Moves BPS
BPS rises with retained earnings accumulation and falls with dividend payments. Buybacks reduce both net assets and share count, so the impact on BPS depends on the price paid: buying above book lowers BPS, buying below book raises it. Fair-value movements in investment securities (via OCI) and foreign-exchange translation adjustments also shift BPS without going through the income statement.
Limitations
BPS is a balance-sheet number that does not directly reflect earning power. Intangible assets such as brand equity, patents, and customer relationships are absent from the book, making BPS a poor measure of economic value for asset-light businesses (IT, services). Conversely, companies carrying large goodwill balances or impairment-prone assets may have overstated BPS. Evaluating BPS alongside ROE and operating cash flow helps distinguish whether book equity is 'productive capital' or 'idle accumulation.'