Diluted Shares
The total number of shares outstanding including all potentially dilutive securities, used to calculate diluted EPS.
What is Diluted Shares?
Diluted shares represent the total number of common shares that would be outstanding if all potentially dilutive securities were exercised or converted into common stock. These include stock options, restricted stock units (RSUs), warrants, convertible bonds, and convertible preferred shares. Diluted shares always equal or exceed basic shares outstanding. Under GAAP, companies must report both basic EPS (using only shares already outstanding) and diluted EPS (using diluted shares) to give investors a more conservative, worst-case picture of per-share earnings. A large gap between basic and diluted EPS signals significant dilution risk from employee compensation or convertible debt.
Example
Alphabet Inc. reported basic shares of 12.3 billion and diluted shares of 12.4 billion for fiscal year 2023. The difference of approximately 100 million shares primarily reflects outstanding stock options and RSUs granted to employees. Basic EPS was $5.80 and diluted EPS was $5.75 — a modest difference indicating limited dilution risk. Technology companies with large equity compensation programs often show wider gaps between their basic and diluted share counts.