Sifting through countless of stocks in the Communications Equipment industry can be tedious, and sometimes two stocks are just too similar to judge which is the better investment. If you’re on the fence about investing in Ciena Corporation or Belden Inc. because you’re not sure how they measure up, it’s important to compare them on a few factors before making your decision.

Read on to learn how Ciena Corporation and Belden Inc. compare based on key financial metrics to determine which better meets your investment needs.

About Ciena Corporation and Belden Inc.

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.

Belden Inc. provides connection solutions to bring data infrastructure into alignment to unlock new possibilities for its customers. The company provides copper cable and connectivity solutions, fiber cable and connectivity solutions, interconnect panels, racks and enclosures, and signal extension and matrix switching systems for use in local area networks, data centers, access control, 5G, fiber to the home, and building automation applications. It also provides power, cooling, and airflow management products for mission-critical data center operations; and end-to-end fiber and copper network systems. It also serves commercial real estate, education, financial institutions, stadiums and venues, military installations, and broadband and wireless service providers, as well as data centers, government, healthcare, and hospitality sectors. In addition, the company offers network digitization and automation solutions; and products and solutions covering various aspects of data handling, including acquisition, transmission, orchestration, and management for applications in discrete automation, process automation, energy, and mass transit. It sells its products to distributors, end-users, installers, and original equipment manufacturers (OEMs). It operates in the Americas, Europe, the Middle East, Africa, and the Asia-Pacific. The company was formerly known as Belden CDT Inc. and changed its name to Belden Inc. in May 2007. Belden Inc. was founded in 1902 and is headquartered in Saint Louis, Missouri.

Latest Communications Equipment and Ciena Corporation, Belden Inc. Stock News

As of September 1, 2026, Ciena Corporation had a $51.0 billion market capitalization, compared to the Communications Equipment median of $349.6 million. Ciena Corporation’s stock is NA in 2026, NA in the previous five trading days and up 283.45% in the past year.

Currently, Ciena Corporation’s price-earnings ratio is 119.8. Ciena Corporation’s trailing 12-month revenue is $5.6 billion with a 7.9% net profit margin. Year-over-year quarterly sales growth most recently was 39.5%. Analysts expect adjusted earnings to reach $6.553 per share for the current fiscal year. Ciena Corporation does not currently pay a dividend.

Currently, Belden Inc.’s price-earnings ratio is 18.2. Belden Inc.’s trailing 12-month revenue is $2.9 billion with a 8.5% net profit margin. Year-over-year quarterly sales growth most recently was 11.6%. Analysts expect adjusted earnings to reach $8.644 per share for the current fiscal year. Belden Inc. currently has a 0.2% dividend yield.

How We Compare Ciena Corporation and Belden Inc. Stock Grades

Stock evaluation requires access to huge amounts of data and the knowledge and time to sift through it all, make sense of financial ratios, read income statements and analyze recent stock movements. AAII created A+ Investor, a robust data suite that condenses data research in an actionable and customizable way suitable for investors of all knowledge levels, to help investors streamline and work through such data.

AAII’s proprietary stock grades come with A+ Investor. These offer intuitive A‐F grades for each of five key investing factors: value, growth, momentum, earnings estimate revisions and quality. Here, we’ll take a closer look at Ciena Corporation and Belden Inc.’s stock grades to see how they measure up against one another.

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Ciena Corporation and Belden Inc.’s Quality Grades

Company	Ticker	Quality
Ciena Corporation	CIEN	A
Belden Inc.	BDC	A

Like the Value Grade, AAII’s A+ Investor Quality Grade comes from the percentile rank of key metrics. Specifically, the Quality Score is the percentile rank of the average of the percentile ranks of return on assets (ROA), return on invested capital (ROIC), gross profit relative to assets, buyback yield, change in total liabilities to assets, accruals, Z double prime bankruptcy risk (Z) score and the F-Score.

The score is variable, meaning it can consider all eight measures or, should any of the eight measures not be valid, the remaining measures that are valid. To be assigned a Quality Score, stocks must have a valid (non-null) measure and corresponding ranking for at least four of the eight quality measures.

The Quality Score is used to assess the underlying “quality” of a particular stock. A higher-quality stock possesses traits associated with upside potential and reduced downside risk. Backtesting of the Quality Grade shows that stocks with higher grades, on average, outperformed stocks with lower grades over the period of 1998 through 2019.

Stocks receive better grades (higher scores) for having higher scores for the quality subcomponents and worse grades (lower scores) for lower scores for the subcomponents.

Ciena Corporation has a Quality Score of 91, which is Very Strong. Belden Inc. has a Quality Score of 91, which is Very Strong.

The Quality Grade Winner: It’s a Tie!

Looking at the Quality Grade breakdown above, both Ciena Corporation and Belden Inc. have a grade of A. For investors who focus solely on a company’s overall quality, you will need to conduct further research into both companies to see if they are a good fit for your portfolio. As a good rule of thumb, you should always analyze multiple factors based on a wide range of metrics before choosing a company to invest in.

Ciena Corporation and Belden Inc.’s Momentum Grades

Company	Ticker	Momentum
Ciena Corporation	CIEN	A
Belden Inc.	BDC	D

Momentum grades help to uncover stocks experiencing anomalously high rates of return; research finds that stocks with high relative levels of momentum tend to outperform, whereas those with low levels of momentum tend to continue underperforming. Momentum is based on the price change of a stock over a specified period relative to all other stocks.

Typically, AAII looks at the weighted relative strength over the trailing four quarters. The weighted four-quarter relative strength rank is the relative price change for each of the past four quarters. The most recent quarterly price change is given a weight of 40% and each of the three previous quarters are given a weighting of 20%.

Ciena Corporation has a Momentum Score of 96, which is Very Strong. Belden Inc. has a Momentum Score of 36, which is Weak.

The Momentum Grade Winner: Ciena Corporation

As you can clearly see from the Momentum Grade breakdown above, Ciena Corporation is considered to have stronger momentum compared to Belden Inc.. For those specifically looking for companies that have stronger momentum compared to other companies in the same industry, Ciena Corporation could be a good stock to invest in. However, it’s important for investors to analyze multiple factors based on a wide range of metrics before deciding whether to buy.

Ciena Corporation and Belden Inc.’s Estimate Revisions Grades

Company	Ticker	Earnings Estimate
Ciena Corporation	CIEN	B
Belden Inc.	BDC	B

Earnings estimate revisions scores consider the magnitude of a company’s earnings surprise in its last two reported fiscal quarters. Often, positive surprises beget further positive surprises‐or at least continued sales growth (the exact opposite is generally true, too).

Estimate revisions offer an indication of what analysts are thinking about the short-term prospects of a firm. Estimate revisions are based on the statistical significance of a firm’s last two quarterly earnings surprises and the percentage change in its consensus estimate for the current fiscal year over the past month and past three months.

Ciena Corporation has a Earnings Estimate Score of 74, which is Positive. Belden Inc. has a Earnings Estimate Score of 71, which is Positive.

The Earnings Estimate Revisions Grade Winner: It’s a Tie!

Looking at the Earnings Estimate Revisions Grade breakdown above, both Ciena Corporation and Belden Inc. have a grade of B. For those focusing solely on a company’s estimate revisions, other financial metrics will need to be evaluated to determine whether Ciena Corporation or Belden Inc. is a better fit.

Other Ciena Corporation and Belden Inc. Grades

In addition to Momentum, Quality and Estimate Revisions, A+ Investor also provides grades for Value and Growth.

Growth investing builds on the idea that stocks of companies exhibiting strong, consistent and prolonged growth outperform those of slower-growth companies. AAII measures growth through consistency of annual sales growth, five-year sales growth rankings adjusted for extreme levels, and consistency of positive annual cash from operations.

Successful stock investing involves buying low and selling high, so stock valuation is an important consideration for stock selection. Buying stocks that are going to go up typically means buying stocks that are undervalued in the first place, although momentum investors may argue that point.

These 2 key factors, when combined with the above, provide a holistic view into a particular stock. Further, by joining A+ Investor you can see whether Ciena Corporation and Belden Inc. pass any of our 60+ stock screens that have outperformed the market since their creation.

So, Which Is the Better Investment, Ciena Corporation or Belden Inc. Stock?

Overall, Ciena Corporation stock has a Momentum Score of 96, Estimate Revisions Score of 74 and Quality Score of 91.

Belden Inc. stock has a Momentum Score of 36, Estimate Revisions Score of 71 and Quality Score of 91.

Comparing Ciena Corporation and Belden Inc.’s grades, scores and metrics can act as a solid basis to determine whether they may be a good investment or not. You’ll also want to look at your portfolio’s asset allocation as well as your risk tolerance and financial goals to see if either of these stocks would make a good fit for you. AAII can help you figure out which investments align with your individual needs and preferences.

Investors are encouraged to do their own due diligence and research. In this way, individuals can effectively become managers of their own assets‐without having to rely on others for financial independence. You can count on AAII for timeless articles on financial planning and stock-picking, unbiased research and actionable analysis.

A+ Investor adds to our qualitative teaching with a powerful data suite to help you whittle down investment choices to find stocks, exchange-traded funds (ETFs) or mutual funds that meet your needs.

AAII Disclaimer

We make no representations or warranties that any investor will, or is likely to, achieve profits similar to those shown, because past, hypothetical or simulated performance is not necessarily indicative of future results. Before making an investment decision, you should consider your circumstances and whether the information on our content is applicable to your situation. This information was prepared in good faith, and we accept no liability for any errors or omissions. The full disclaimer can be read here.