Avoid the stress of overpaying for a stock or missing an opportunity by using the right tools and insights to evaluate Ciena Corporation before investing.

In this article, we go over a few key elements for understanding Ciena Corporation’s stock price such as:

• Ciena Corporation’s current stock price and volume
• Why Ciena Corporation’s stock price changed recently
• Upgrades and downgrades for CIEN from analysts
• CIEN’s stock price momentum as measured by its relative strength

About Ciena Corporation (CIEN)

Before we jump into Ciena Corporation’s stock price, history, target price and what caused it to recently dip, let’s take a look at some background.

Ciena Corporation, a network technology company, provides hardware, software, and services for various network operators in the Americas, Europe, the Middle East, Africa, the Asia Pacific, Japan, and India. It operates through Networking Platforms, Platform Software and Services, Blue Planet Automation Software and Services, and Global Services segments. The Networking Platforms segment consists optical networking, routing, and switching products and services. This segment products include the 6500 Packet-Optical Platform, Waveserver modular interconnect system, the 6500 Reconfigurable Line System, and coherent pluggable transceivers; and the 3000 family of service delivery platforms and the 5000 family of service aggregation, as well as the 8100 Coherent Routing platforms and virtualization software. The Platform Software and Services segment offers navigator network control suite; and software subscription services, consulting, network migration and integration, installation and upgrade support services, and technical support solutions. The Blue Planet Automation Software and Services segment inventory management, orchestration, route optimization and analysis, and unified assurance and analytics software; and sells subscription, installation, support, consulting, and design services related to the Blue Planet automation platform. The Global Services segment provides services for advisory and enablement, implementation, and maintenance, support, and learning activities. Ciena Corporation was incorporated in 1992 and is headquartered in Hanover, Maryland.

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Ciena Corporation’s Stock Price as of Market Close

As of May 13, 2026, 9:46 AM, CST, Ciena Corporation’s stock price was $565.000.

Ciena Corporation is down 2.11% from its previous closing price of $577.150.

During the last market session, Ciena Corporation’s stock traded between $562.500 and $598.840. Currently, there are approximately 141.68 million shares outstanding for Ciena Corporation.

Ciena Corporation’s price-earnings (P/E) ratio is currently at 366.9, which is high compared to the Communications Equipment industry median of 33.6. The price-earnings ratio gauges market expectation of future performance by relating a stock’s current share price to its earnings per share.

Ciena Corporation Stock Price History

Ciena Corporation’s (CIEN) price is currently up 7.09% so far this month.

During the month of May, Ciena Corporation’s stock price has reached a high of $598.840 and a low of $515.490.

Over the last year, Ciena Corporation has hit prices as high as $593.000 and as low as $70.770. Year to date, Ciena Corporation’s stock is up 141.59%.

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What Caused Ciena Corporation Stock’s Price to Dip?

Stock prices are primarily based on seller supply and buyer demand. But have you ever wondered about what other factors affect a stock's price?

When an analyst changes their opinion of a stock by upgrading or downgrading their rating, it often leads to a sudden stock price adjustment. As of May 12, 2026, there was 1 analyst who downgraded Ciena Corporation’s stock and 0 analysts who upgraded over the last month.

Additionally, you'll want to evaluate Ciena Corporation’s financial health and valuation. Investors can use AAII's Value Grade, which combines six key valuation metrics like P/E and P/S ratios for a comprehensive analysis to conduct analysis on Ciena Corporation’s valuation and financial health. This approach mitigates the limitations of single-metric evaluations.

Ciena Corporation’s current valuation based on AAII’s Value Grade is a F, which means it is considered to be Ultra Expensive.

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Lastly, news and media coverage as well as recent press reports about the company or its industry may cause stock prices to fluctuate. You can check out the most recent news articles about Ciena Corporation (CIEN) by visiting AAII Stock Evaluator.

Relative Price Strength of Ciena Corporation

Relative price strength measures a stock's performance against the market, helping investors identify stocks that are outperforming benchmarks.

For AAII’s Momentum Grade, a weighted relative price strength is calculated. Follow this link to learn more about the Momentum Grade.

As of May 12, 2026, Ciena Corporation has a weighted four-quarter relative price strength of 63.82%, which translates to a Momentum Score of 98 and is considered to be Very Strong.

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Ciena Corporation Stock Price: Bottom Line

As of May 13, 2026, Ciena Corporation’s stock price is $565.000, which is down 2.11% from its previous closing price.

AAII advises against making stock decisions based solely on price or past returns. Instead, consider a variety of metrics, fundamentals, and analytics to evaluate a stock like Ciena Corporation stock prices are influenced by market supply and demand and offer just a snapshot of a company's overall health.

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