Earnings Per Share
Shares (Diluted)
Ciena Shares (Diluted) increased by 161898.9% to 145.8M in Q4 2025 compared to the prior quarter. Year-over-year, this metric declined by 0.1%, from 145.9M to 145.8M. Over 2 years (FY 2021 to FY 2025), Shares (Diluted) shows relatively stable performance with a -3.8% CAGR. This increase may warrant attention — for this metric, lower values are generally preferred.
Analysis
StatementIncome Statement
SectionEarnings Per Share
CategoryCapital Allocation
SignalLower is better
VolatilityStable
First reportedQ1 2014
Last reportedQ1 2026Mar 5, 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
18 periods
| Q2 '21 | Q3 '21 | Q4 '21 | Q1 '22 | Q2 '22 | Q3 '22 | Q1 '23 | Q2 '23 | Q3 '23 | Q1 '24 | Q2 '24 | Q3 '24 | Q4 '24 | Q1 '25 | Q2 '25 | Q3 '25 | Q4 '25 | Q1 '26 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Value | 156.9M | 156.7M | 1K | 155.8M | 153.3M | 150.5M | 149.6M | 150.1M | 150M | 145.8M | 144.9M | 145.4M | 169K | 145.9M | 145M | 144.5M | 90K | 145.8M |
| QoQ Change | — | -0.1% | -100.0% | >999% | -1.6% | -1.9% | -0.6% | +0.4% | -0.1% | -2.8% | -0.6% | +0.3% | -99.9% | >999% | -0.7% | -0.3% | -99.9% | >999% |
| YoY Change | — | — | — | — | -2.3% | -4.0% | -4.0% | -2.1% | -0.3% | -2.5% | -3.5% | -3.1% | — | +0.1% | +0.0% | -0.6% | -46.7% | -0.1% |
Range1K – 156.9M
CAGR-1.7%
Avg YoY Growth-5.3%
Median YoY Growth-2.3%
Shares (Diluted) at Other Companies
Frequently Asked Questions
- What is Ciena's shares (diluted)?
- Ciena (CIEN) reported shares (diluted) of 145.8M in Q4 2025.
- How has Ciena's shares (diluted) changed year-over-year?
- Ciena's shares (diluted) decreased by 0.1% year-over-year, from 145.9M to 145.8M.
- What is the long-term trend for Ciena's shares (diluted)?
- Over 2 years (2021 to 2025), Ciena's shares (diluted) has grown at a -3.8% compound annual growth rate (CAGR), from 470.2M to 435.5M.
- What does shares (diluted) mean?
- The average number of shares outstanding including all potential shares that could be created.