Last reviewed: July 2026.
Shareholder Investment Ratios: Formulas and Analysis brings together the principal measures investors use to connect company performance, dividends, equity and market price.
Why shareholder ratios need context
No single ratio captures investment quality. Earnings measures, dividend measures, balance-sheet returns and market-price measures answer different questions. Ratios should be compared with prior periods, peers, strategy, risk and cash generation. A high result is not always favourable: a very high dividend yield may reflect a collapsing share price, while a high return on equity may be driven by excessive debt or a very small equity base.
Earnings per share
Basic EPS relates profit attributable to ordinary shareholders to the weighted-average number of ordinary shares. Use the applicable IAS 33 calculation for published IFRS financial statements rather than dividing total profit by closing shares. Consider bonus issues, rights issues and potential ordinary shares. EPS helps compare per-share performance over time, but accounting policies, exceptional items, acquisitions and capital structure changes can reduce comparability.
Price-to-earnings ratio
The P/E ratio equals market price per share divided by earnings per share. It shows how many units of current earnings investors are paying for one share. A high P/E may indicate expected growth, quality or lower risk, but it may also reflect temporary earnings weakness. A low P/E may indicate undervaluation or serious concerns. Compare companies with similar business models and use sustainable, consistently measured earnings.
Dividend per share and dividend yield
Dividend per share is ordinary dividends attributable to the period divided by the relevant number of ordinary shares. Dividend yield normally equals dividend per share divided by current market price, expressed as a percentage. Yield measures current cash return relative to price, not total return. Check whether the dividend is recurring, supported by free cash flow and compatible with investment needs, debt covenants and regulatory restrictions.
Dividend cover and payout ratio
Dividend cover is commonly earnings per share divided by dividend per share, while the payout ratio expresses dividends as a proportion of earnings. Higher cover may provide a buffer against earnings volatility, although mature companies may operate with lower cover. Very high cover can also signal that shareholders receive little current return. Review cash conversion, capital expenditure and debt service because accounting earnings alone do not fund dividends.
Return on equity
ROE compares profit attributable to ordinary shareholders with average ordinary shareholders’ equity. Average equity is usually more meaningful than a single closing balance. ROE combines operating performance, asset use and financing structure; leverage can increase the result while also increasing risk. Separate recurring profit from one-off gains and compare ROE with the cost of equity, peer returns and the company’s reinvestment opportunities.
Book value per share
Book value per share divides ordinary equity attributable to owners by ordinary shares outstanding. It is an accounting measure, not a direct valuation. Internally generated brands, growth options and human capital may not appear at market value, while asset impairments or historical-cost measurements may affect the balance. The price-to-book ratio can be useful for asset-intensive or financial businesses but requires careful comparison of accounting bases and asset quality.
Total shareholder return
Total shareholder return combines share-price movement with dividends received over a period. It is a market measure and can differ sharply from accounting profit or ROE. Select consistent start and end dates, adjust for corporate actions and compare against a relevant benchmark. A strong short-term TSR may reflect market re-rating rather than operating improvement, while a weak result may occur despite sound long-term investment.
Worked example
A company has EPS of 0.50, a market price of 6.00 and dividend per share of 0.20. The P/E ratio is 12 times, dividend yield is 3.33% and dividend cover is 2.5 times. If average ordinary equity is 4 million and profit attributable to ordinary shareholders is 600,000, ROE is 15%. Interpretation requires comparison with peers, growth prospects, risk, cash flow and the sustainability of the dividend.
Data quality and consistency
Use audited or reliably reported figures, align numerator and denominator periods, and distinguish basic from diluted EPS. Avoid mixing a year-end share price with earnings from an unrelated period without explaining the convention. Adjustments for exceptional items should be transparent and reconciled to reported results. When comparing companies, check currency, fiscal year, accounting policies, share classes, discontinued operations and major acquisitions.
Limitations of market ratios
Market prices can move because of interest rates, sentiment, liquidity or macroeconomic news unrelated to current accounting performance. Negative earnings make P/E difficult to interpret. Buybacks alter share counts, and large intangible businesses may have low book equity. Ratios are screening and diagnostic tools rather than mechanical buy or sell signals. Use them with qualitative analysis of strategy, governance, competitive position and financial resilience.
Investor analysis checklist
Calculate EPS, diluted EPS, P/E, dividend yield, cover, payout, ROE, book value per share and total shareholder return using consistent data. Compare trends and peers, explain major movements, test dividend sustainability, examine leverage and interest cover, review cash flow and identify one-off items. Finish with a balanced conclusion that distinguishes current performance, market expectations, financial risk and long-term value creation.
Related Accounting Guides
- Accounting Ratio Analysis: Formulas and Interpretation
- Gearing Ratio Formula, Interpretation and Worked Example
- Company Financial Statements: IFRS 18 Structure and Disclosures
Authoritative References
- How to approach performance appraisal questions — Professional guidance on investor ratios, dividend yield and interpretation.
- Business valuations — Professional explanation of P/E ratios, dividend yield and shareholder value.