Earnings Per Share
Shares (Diluted)
Costco Wholesale Shares (Diluted) decreased by 0.0% to 444.4M in Q4 2025 compared to the prior quarter. Year-over-year, this metric declined by 0.1%, from 444.9M to 444.4M. This is a positive signal — lower values indicate better performance for this metric.
Analysis
StatementIncome Statement
SectionEarnings Per Share
CategoryCapital Allocation
SignalLower is better
VolatilityStable
First reportedQ1 2014
Last reportedQ1 2026
How to read this metric
An increase indicates potential dilution from employee compensation or convertible instruments, which can reduce earnings per share.
Detailed definition
The weighted-average number of common shares outstanding plus the effect of all potentially dilutive securities, such as...
Peer comparison
Standard metric for all public companies; essential for understanding the impact of equity-based compensation.
Metric ID:
weighted_shares_dilutedHistorical Data
15 periods
| Q1 '21 | Q3 '21 | Q4 '21 | Q1 '22 | Q3 '22 | Q4 '22 | Q1 '23 | Q3 '23 | Q4 '23 | Q1 '24 | Q3 '24 | Q4 '24 | Q1 '25 | Q3 '25 | Q4 '25 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Value | 444.1M | 444.6M | 444.9M | 444.9M | 444.5M | 444.5M | 444.4M | 444.4M | 444.8M | 444.8M | 444.9M | 444.9M | 444.8M | 444.5M | 444.4M |
| QoQ Change | — | +0.1% | +0.1% | -0.0% | -0.1% | -0.0% | -0.0% | +0.0% | +0.1% | +0.0% | +0.0% | -0.0% | -0.0% | -0.1% | -0.0% |
| YoY Change | — | — | — | +0.2% | -0.0% | -0.1% | -0.1% | -0.0% | +0.1% | +0.1% | +0.1% | +0.0% | -0.0% | -0.1% | -0.1% |
Range444.1M – 444.9M
CAGR+0.0%
Avg YoY Growth+0.0%
Median YoY Growth-0.0%
Current Streak4 quarters decline
Shares (Diluted) at Other Companies
Frequently Asked Questions
- What is Costco Wholesale's shares (diluted)?
- Costco Wholesale (COST) reported shares (diluted) of 444.4M in Q4 2025.
- How has Costco Wholesale's shares (diluted) changed year-over-year?
- Costco Wholesale's shares (diluted) decreased by 0.1% year-over-year, from 444.9M to 444.4M.
- What does shares (diluted) mean?
- The average number of shares outstanding including all potential shares that could be created.