Shares Outstanding for Ciena (CIEN)
According to Ciena's latest reported financial statements, the company's latest reported diluted shares outstanding is 145.80M. Diluted weighted-average shares outstanding is the share count used to compute per-share metrics like EPS. Buybacks lower it; new issuance, stock-based compensation, and convertible securities raise it. Multiply by the stock price for market capitalization.
Headline figure above is from the reporting period ending (reported ). Chart and table below cover the full reported history back to .
CIEN
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Latest period
145.80M
YoY change
-0.5%
5Y CAGR
-1.4%
Peak year (2017)
169.92M
Latest annual
145.25M
Shares Outstanding history chart for Ciena (CIEN) from 1997 to 2025
Shares Outstanding history table for Ciena (CIEN) from 1997 to 2025
| Fiscal year | Period ended | Reported | Shares Outstanding | YoY |
|---|---|---|---|---|
| 2025 | 145.25M | -0.5% | ||
| 2024 | 145.96M | -2.3% | ||
| 2023 | 149.38M | -1.8% | ||
| 2022 | 152.19M | -2.9% | ||
| 2021 | 156.74M | +0.5% | ||
| 2020 | 155.96M | -1.1% | ||
| 2019 | 157.61M | +9.7% | ||
| 2018 | 143.74M | -15.4% | ||
| 2017 | 169.92M | +12.8% | ||
| 2016 | 150.70M | +25.5% | ||
| 2015 | 120.10M | +13.5% | ||
| 2014 | 105.78M | +3.4% | ||
| 2013 | 102.35M | +3.0% | ||
| 2012 | 99.34M | +3.6% | ||
| 2011 | 95.85M | +3.0% | ||
| 2010 | 93.10M | +2.1% | ||
| 2009 | 91.17M | -17.6% | ||
| 2008 | 110.61M | +11.0% | ||
| 2007 | 99.60M | +17.2% | ||
| 2006 | 85.01M | +3.5% | ||
| 2005 | 82.17M | +10.3% | ||
| 2004 | 74.52M | +16.7% | ||
| 2003 | 63.83M | +22.3% | ||
| 2002 | 52.19M | +17.1% | ||
| 2001 | 44.56M | +4.1% | ||
| 2000 | 42.82M | +12.2% | ||
| 1999 | 38.16M | +4.4% | ||
| 1998 | 36.55M | +23.5% | ||
| 1997 | 29.59M | — |
Shares Outstanding values are taken from Ciena's reported income statements (10-Q quarterly and 10-K annual filings with the U.S. Securities and Exchange Commission). Each row shows the period end date and the date the filing was reported; YoY compares each figure to the same period one year earlier. Amounts are in USD as filed.
Analysis
In 2025, Ciena (CIEN) diluted shares outstanding totalled 145.25M – edged down 0.5% year-over-year.
Looking at the 2020–2025 (5 years) stretch, Ciena diluted shares outstanding compounded at -1.4% per year, with a net decline across the window.
Ciena diluted shares outstanding peaked at 169.92M in 2017; the latest annual figure is 145.25M in 2025 (14.5% below peak).
Across the available history, diluted shares outstanding reached its high of 169.92M in 2017 and its low of 29.59M in 1997.
Among 8 Technology peers, Ciena (CIEN) ranks 9th; the peer median for diluted shares outstanding is 5.02B.
Ciena Shares Outstanding by Year
Ciena Shares Outstanding 2025: 145.25M
Ciena diluted shares outstanding in 2025 was 145.25M, edged down 0.5% below 2024.
Ciena Shares Outstanding 2024: 145.96M
Ciena diluted shares outstanding in 2024 was 145.96M, edged down 2.3% below 2023.
Ciena Shares Outstanding 2023: 149.38M
Ciena diluted shares outstanding in 2023 was 149.38M, edged down 1.8% below 2022.
Ciena Shares Outstanding 2022: 152.19M
Ciena diluted shares outstanding in 2022 was 152.19M, edged down 2.9% below 2021.
Ciena Shares Outstanding 2021: 156.74M
Ciena diluted shares outstanding in 2021 was 156.74M.
See more financial history for Ciena (CIEN).
Sector peers — Shares Outstanding
Companies in the same sector as Ciena, ranked by their latest diluted shares outstanding.
| Company | Shares Outstanding | Sector |
|---|---|---|
| NVIDIA Corporation (NVDA) | 24.43B | Technology |
| Apple Inc. (AAPL) | 15.00B | Technology |
| Microsoft Corporation (MSFT) | 7.46B | Technology |
| Taiwan Semiconductor Manufacturing Company Limited (TSM) | 5.19B | Technology |
| Broadcom Inc. (AVGO) | 4.85B | Technology |
| Advanced Micro Devices, Inc. (AMD) | 1.64B | Technology |
| Micron Technology, Inc. (MU) | 1.13B | Technology |
| ASML Holding N.V. (ASML) | 388.90M | Technology |
Frequently asked questions
What is Ciena's diluted shares outstanding?
- Latest reported diluted shares outstanding for Ciena (CIEN) is 145.80M (period ending January 31, 2026).
How has Ciena diluted shares outstanding changed year-over-year?
- Ciena (CIEN) diluted shares outstanding changed -0.5% year-over-year on the latest annual filing.
What is the long-term growth rate of Ciena diluted shares outstanding?
- Ciena (CIEN) diluted shares outstanding compound annual growth rate is -1.4% over the most recent 5 years available.
When did Ciena diluted shares outstanding hit its highest annual value?
- Ciena diluted shares outstanding reached its highest annual value of 169.92M in 2017.
What was Ciena diluted shares outstanding in 2024?
- Ciena (CIEN) diluted shares outstanding in 2024 was 145.96M.
What was Ciena diluted shares outstanding in 2025?
- Ciena (CIEN) diluted shares outstanding in 2025 was 145.25M.
Metrics overview
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