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Below is a table of the CIEN shares outstanding history going back to 2/26/2010:
Also see: CIEN Market Cap History CIEN YTD Return |
CIEN Shares Outstanding History — Ciena Share Count Over Time
As of 2/27/2026 Ciena has 141.40 million CIEN shares outstanding. Investors often track the CIEN shares outstanding history to compare shareholder return trends against the change in share count over time.
This page shows CIEN share count trends over time, with 66 historical shares outstanding datapoints presented, dating back to 2/26/2010.
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CIEN Historical Shares Outstanding: +2.68% CAGR 
Mouse over chart for data details
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| CIEN Stock Price Chart |
| About Ciena Corp |
| Ciena Corporation is a network platform, software, and services company. Co.'s solutions enable a range of network operators to deploy and manage networks that deliver services to businesses and consumers. Its segments include Networking Platforms, Platform Software and Services, Blue Planet Automation Software and Services, and Global Services. Its Networking Platforms segment consists of its Optical Networking and Routing and Switching portfolios. Its Platform Software and Services segment provides domain control management, analytics, data and planning tools and applications to manage networks. We show 66 historical shares outstanding datapoints in our coverage of CIEN's shares outstanding history. Understanding the changing numbers of CIEN shares outstanding — and comprehending the concept of differing number of shares outstanding in general comparing companies like CIEN versus peers — is critical for investors. Many "beginner" or "novice" investors will look at one stock trading at a price of $10 per share and another trading at a price of $20 per share and think the latter company is worth twice as much. Of course, that is a completely meaningless comparison without also knowing how many shares outstanding there are for each of the two companies. Furthermore, via issuance of new shares over time, or the repurchase of existing shares, the number of shares outstanding can fluctuate over the course of history. With this page we aim to empower investors researching CIEN by allowing them to research CIEN shares outstanding history as well as any other stock in our coverage universe. |
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| CIEN Share Performance |
| Shares Outstanding Peers |
| Ciena (CIEN) is categorized under the Technology sector; to help you further research historical shares outstanding numbers, below are some other companies in the same sector:
CIFR Shares Outstanding History CISO Shares Outstanding History CLDR Shares Outstanding History CLFD Shares Outstanding History CLIR Shares Outstanding History CLMB Shares Outstanding History CLRO Shares Outstanding History CMRC Shares Outstanding History CMTL Shares Outstanding History CNSL Shares Outstanding History More Technology companies » |
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