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 every stock option, convertible bond, or employee share award that could become a real share actually does. This gives a more conservative — and more realistic — picture of earnings per share.
Diluted EPS is almost always the number analysts focus on, because it reflects the full potential dilution of ownership.

A Microsoft example: In its fiscal year 2024, Microsoft reported diluted EPS of roughly $11.80. That figure came from dividing net income of approximately $88 billion by around 7.4 billion diluted shares. In any given quarter, analysts compare the reported diluted EPS against what they had forecast — a beat or a miss on that number can move the stock price significantly on earnings day.

How to Read It

A rising EPS over time generally signals that a company is growing its profits, or shrinking its share count (through buybacks), or both. A falling EPS can indicate shrinking margins, rising costs, or a difficult trading environment.

Context matters enormously. A technology company like Microsoft typically carries a higher EPS than a utility or a retailer, simply because of different margin structures and capital requirements. Always compare EPS trends within the same sector, and look at the trajectory over several quarters rather than a single data point. Analysts also track the EPS surprise — the difference between the reported figure and the consensus estimate — as a short-term signal of how a business is performing relative to expectations.

Where to Find It on Quantify

Quantify displays both basic and diluted EPS directly on each company's stock page, alongside historical quarterly trends so you can see how the figure has evolved over time. For Microsoft's full EPS history and latest reported figures, visit the MSFT stock page on Quantify. The page also shows the EPS figure in the context of other profitability metrics, making it easier to build a complete picture of the business.

Common Mistakes

Mistake 1: Using basic EPS instead of diluted EPS. Basic EPS looks better on paper because it uses a smaller share count, but it ignores the real-world dilution that comes from employee stock compensation — which is substantial at large technology companies. Diluted EPS is the more honest number.

Mistake 2: Reading EPS in isolation. A high EPS does not automatically mean a company is "cheap" or performing well. A business can boost EPS simply by buying back shares aggressively, even if underlying profits are flat. Always pair EPS with revenue growth, margins, and the Price-to-Earnings ratio (P/E — share price divided by EPS) to get a fuller view of what the number actually means.