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Valuation 04 Company and Valuation Thinking

Earnings per Share: Why the Share Count Matters

Explain why profit can grow while earnings per share fall.

Profit SharesEPS
Weighted-average shares

Company profit and profit per share can diverge

A company can report higher profit while earnings per share fall. Earnings per share, or EPS, combines a profit numerator with a share-count denominator. If the number of shares grows faster than the relevant profit, a larger total is spread over more shares. Reading both inputs prevents an increase in company-wide earnings from being mistaken for the same increase for each share.

For ordinary basic EPS, the numerator is earnings attributable to ordinary shareholders under the applicable accounting rules. That can differ from an unqualified headline profit figure, for example where other owners or preference claims are involved. The denominator is a weighted-average share count for the period, rather than simply the number outstanding on the final day.

IAS 33 is the IFRS accounting reference used here. Its overview explains basic and diluted EPS, attributable earnings and weighted-average ordinary shares. Companies reporting under other frameworks can have different detailed requirements. This article introduces the relationship between the inputs; it does not provide transaction-specific accounting guidance.

More profit, but more shares too

In the first hypothetical year, a company earns £100 million attributable to ordinary shareholders and has 50 million weighted-average ordinary shares. Basic EPS is £2.00. In the second year, attributable profit rises to £110 million but the weighted-average share count rises to 60 million. Basic EPS becomes approximately £1.83, rounded from £1.83333.

Profit grows by 10%, while the weighted-average share count grows by 20%. EPS therefore falls by approximately 8.33%, calculated from the unrounded figures. Dividing the rounded £1.83 by £2 would create a slightly different percentage. Keep full precision until the final presentation when comparing rates of change.

To illustrate the weighting, assume 50 million shares are outstanding for exactly half the second year and 70 million for the other half. With no other share changes, the simplified half-year weighting gives 60 million: half of 50 plus half of 70. Actual reporting follows the applicable timing and adjustment rules. The 70 million closing shares are not the denominator used in this example.

110601.83

Million pounds divided by million shares gives pounds per share.

Year 1 attributable profit £100m
Year 1 weighted-average shares 50m
Year 1 basic EPS £2.00
Year 2 attributable profit £110m
Year 2 weighted-average shares 60m
Year 2 basic EPS £1.83
EPS change, before display rounding −8.33%

Issuance changes the denominator, not the whole conclusion

A share issue can finance an acquisition, repay debt or fund investment. A fall in EPS after issuance does not, by itself, show whether that decision created or destroyed value. The new resources and their future consequences require separate analysis. Equally, EPS growth following a reduction in shares does not prove that the underlying business improved.

Share splits and similar changes also require adjustments so comparisons remain meaningful. Merely dividing one share into several does not create new company profit. The purpose of consistent accounting treatment is to avoid presenting a mechanical change in units as an economic gain or loss. Reconciliations help explain which changes affected reported denominators.

Diluted EPS asks about additional potential shares

Options, convertible instruments and other arrangements can create potential ordinary shares. Diluted EPS considers those that are dilutive under the accounting rules, with corresponding numerator adjustments where required. It is not calculated by simply adding every possible share to basic EPS. Anti-dilutive instruments are excluded from the diluted calculation under IAS 33.

Neither basic nor diluted EPS is cash flow per share. Accruals, one-off items and accounting estimates affect earnings, while capital expenditure and financing affect cash differently. Comparability also depends on the period, currency and earnings definition. An adjusted EPS measure supplied by a company may exclude items included in statutory EPS; its reconciliation should explain the difference.

The reporting notes should identify the earnings measure and reconcile the share counts.

Using the closing count for the entire year

Applying the final 70 million shares to all second-year earnings would ignore that those shares were not all outstanding throughout the period. Match the earnings period to its weighted-average denominator. Then examine why both changed, instead of treating the resulting per-share figure as a complete assessment of business quality or valuation.

Check your understanding

Why does EPS fall when profit rises?

The weighted-average share count rises faster: profit increases 10% and shares 20%, leaving less attributable profit per share.

Why is the second-year denominator 60m rather than 70m?

Under the stated equal-half-year assumption, 50m and 70m shares each apply for half the period.

Are all potential shares included in diluted EPS?

No. Applicable rules identify dilutive instruments and required earnings adjustments; anti-dilutive instruments are excluded under IAS 33.

Connect the ideas

Follow the related articles below to examine these assumptions in another setting.

Educational Use Only

This article is for informational and educational purposes only. It does not provide personalised investment advice.