How It Works

The formula is straightforward: EPS = Net Income ÷ Number of Shares.

In practice, there are two versions you will encounter:

  • Basic EPS uses the actual number of shares currently outstanding (shares that exist and are held by investors).
  • Diluted EPS goes a step further. It assumes that all potential new shares — from stock options, convertible bonds, or employee equity plans — have already been issued. Because this increases the share count, diluted EPS is always equal to or lower than basic EPS. Analysts generally prefer diluted EPS because it reflects a more conservative, realistic picture of earnings.
Microsoft (MSFT) as an example: In a recent fiscal quarter, Microsoft reported net income of roughly $25 billion. With approximately 7.4 billion diluted shares outstanding, that works out to a diluted EPS of around $3.35 for the quarter. You can explore Microsoft's latest figures directly on its Quantify stock page.

How to Read It

A rising EPS over successive quarters signals that a company is growing its profit relative to its share base — either by earning more, cutting costs, or reducing its share count through buybacks (when a company repurchases its own shares). A falling EPS suggests profits are shrinking or the share count is expanding faster than earnings.

Context matters enormously. A software company like Microsoft naturally carries a higher EPS than a capital-intensive manufacturer, because margins differ by industry. Always compare EPS trends within the same sector, and track the direction over time rather than fixating on a single quarter's number. Analysts also compare reported EPS against the "consensus estimate" — the average forecast from Wall Street analysts — because beating or missing that estimate often moves the stock price significantly on earnings day.

Where to Find It on Quantify

Quantify displays both basic and diluted EPS for every reporting period directly on each stock's page, making it easy to spot trends at a glance. You can see Microsoft's historical EPS figures, quarter by quarter, on the MSFT stock page at Quantify. The data is updated following each earnings release so you are always looking at current numbers.

Common Mistakes

Ignoring dilution. Many beginners focus on basic EPS because it looks cleaner, but companies with large employee stock option programmes can have a meaningful gap between basic and diluted figures. Always check diluted EPS for a fuller picture.

Treating EPS in isolation. A company can boost EPS simply by buying back shares — reducing the denominator — without actually growing profits at all. A rising EPS is more meaningful when net income is also growing. Pairing EPS with revenue growth and profit margin gives a much clearer view of whether earnings quality is genuinely improving.