Sifting through countless of stocks in the Electronic Equipment, Instruments & Components 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 Rogers Corporation or Sanmina Corporation 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 Rogers Corporation and Sanmina Corporation compare based on key financial metrics to determine which better meets your investment needs.

About Rogers Corporation and Sanmina Corporation

Rogers Corporation designs, develops, manufactures, and sells engineered materials and components in the United States, other Americas, China, other Asia Pacific countries, Germany, Europe, the Middle East, and Africa. It operates in two Advanced Electronics Solutions (AES), Elastomeric Material Solutions (EMS) segments. The AES segment offers circuit materials, ceramic substrate materials, busbars, and cooling solutions for applications in electric and hybrid electric vehicles, automotive, aerospace and defense, renewable energy, wireless infrastructure, mass transit, industrial, connected devices, and wired infrastructure markets. This segment sells its products under the curamik, ROLINX, RO4000 series, RO3000 series, RT/duroid, CLTE series, TMM, AD series, DiClad series, CuClad series, Kappa, COOLSPAN, TC series, IsoClad series, MAGTREX, IM series, 2929 Bondply, SpeedWave Prepreg, RO4400/RO4400T series, and Radix trade names. The EMS segment provides engineered material solutions, including polyurethane and silicone materials used in cushioning, gasketing, sealing, and vibration management applications; customized silicones used in flex heater and semiconductor thermal applications; and polytetrafluoroethylene and ultra-high molecular weight polyethylene materials used in wire and cable protection, electrical insulation, conduction and shielding, hose and belt protection, vibration management, cushioning, gasketing and sealing, and venting applications. This segment sells its products under the PORON, BISCO, DeWAL, ARLON, eSorba, XRD, Silicone Engineering, and R/bak trade names. The Other segment offers elastomer components under the ENDUR trade name for applications in the general industrial market, as well as elastomer floats under the NITROPHYL trade name for level sensing in fuel tanks, motors, and storage tanks applications in the general industrial and automotive markets. The company was founded in 1832 and is headquartered in Chandler, Arizona.

Sanmina Corporation provides integrated manufacturing solutions, components, products and repair, logistics, and after-market services in the Americas, the Asia Pacific, Europe, the Middle East, and Africa. The company operates through two businesses: Integrated Manufacturing Solutions; and Components, Products and Services. The company offers product design and engineering, including concept development, detailed design, prototyping, validation, preproduction, manufacturing design release, and product industrialization; assembly and test services; direct order fulfillment and logistics services; after-market product service and support; and supply chain management services, as well as engaging in the manufacture of components, subassemblies, and complete systems; and direct order fulfilment and logistics services. In addition, the company provides components, such as printed circuit boards, backplane fabrication and backplane assemblies, cable assemblies, fabricated metal parts, precision machined parts, and plastic injected molded parts; memory solutions; storage platforms; optical, radio frequency, and microelectronic solutions; defense and aerospace products, design, manufacturing, repair, and refurbishment services; and cloud-based manufacturing execution software. It offers its products and services primarily to original equipment manufacturers in the industrial, medical, defense and aerospace, automotive, communications networks, and cloud infrastructure industries. The company was formerly known as Sanmina-SCI Corp. Sanmina Corporation was incorporated in 1980 and is headquartered in San Jose, California.

Latest Electronic Equipment, Instruments & Components and Rogers Corporation, Sanmina Corporation Stock News

As of September 1, 2026, Rogers Corporation had a $2.2 billion market capitalization, compared to the Electronic Equipment, Instruments & Components median of $1.1 million. Rogers Corporation’s stock is up 36.4% in 2026, down 1% in the previous five trading days and up 56.76% in the past year.

Currently, Rogers Corporation’s price-earnings ratio is 70.6. Rogers Corporation’s trailing 12-month revenue is $834.8 million with a 3.7% net profit margin. Year-over-year quarterly sales growth most recently was 6.9%. Analysts expect adjusted earnings to reach $3.750 per share for the current fiscal year. Rogers Corporation does not currently pay a dividend.

As of September 1, 2026, Sanmina Corporation had a $10.0 billion market cap, putting it in the 78th percentile of all stocks. Sanmina Corporation’s stock is up 24.3% in 2026, down 6.1% in the previous five trading days and up 59.38% in the past year.

Currently, Sanmina Corporation’s price-earnings ratio is 33.5. Sanmina Corporation’s trailing 12-month revenue is $12.8 billion with a 2.4% net profit margin. Year-over-year quarterly sales growth most recently was 69.7%. Analysts expect adjusted earnings to reach $12.098 per share for the current fiscal year. Sanmina Corporation does not currently pay a dividend.

How We Compare Rogers Corporation and Sanmina Corporation 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 Rogers Corporation and Sanmina Corporation’s stock grades to see how they measure up against one another.

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Rogers Corporation and Sanmina Corporation Stock Value Grades

Company	Ticker	Value
Rogers Corporation	ROG	D
Sanmina Corporation	SANM	C

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.

AAII’s A+ Investor Value Grade derives from a stock’s value score. The Value Score is the percentile rank of the average of the percentile ranks of the price-to-sales ratio, price-earnings ratio, enterprise-value-to-EBITDA (EV/EBITDA) ratio, shareholder yield, price-to-book-value ratio and price-to-free-cash-flow ratio. The score is variable, meaning it can consider all six ratios or, should any of the six ratios not be valid, the remaining ratios that are valid. To be assigned a Value Score, stocks must have a valid (non-null) ratio and corresponding ranking for at least two of the six valuation ratios.

Stocks with a Value Score from 81 to 100 are considered deep value, those with a score between 61 and 80 are a good value and so on.

Rogers Corporation has a Value Score of 37, which is Expensive. Sanmina Corporation has a Value Score of 43, which is Average.

The Value Stock Winner: No Clear Winner

Neither Rogers Corporation or Sanmina Corporation has a high enough value grade to be considered a “winner.” Investors who are considering these companies should do additional due diligence and research to see if either could be a good addition to their portfolio. It’s important to look at a wide range of financial metrics in order to determine if Rogers Corporation or Sanmina Corporation is the better investment when it comes to value.

Rogers Corporation and Sanmina Corporation’s Quality Grades

Company	Ticker	Quality
Rogers Corporation	ROG	A
Sanmina Corporation	SANM	C

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.

Rogers Corporation has a Quality Score of 87, which is Very Strong. Sanmina Corporation has a Quality Score of 47, which is Average.

The Quality Grade Winner: Rogers Corporation

As you can clearly see from the Quality Grade breakdown above, Rogers Corporation has a better overall quality grade than Sanmina Corporation. For investors who are looking for companies with higher quality than others in the same industry, Rogers Corporation could be a good stock to add to their portfolios. However, it’s important for investors to analyze multiple factors based on a wide range of metrics before deciding whether to buy.

Rogers Corporation and Sanmina Corporation’s Momentum Grades

Company	Ticker	Momentum
Rogers Corporation	ROG	B
Sanmina Corporation	SANM	B

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%.

Rogers Corporation has a Momentum Score of 66, which is Strong. Sanmina Corporation has a Momentum Score of 72, which is Strong.

The Momentum Grade Winner: It’s a Tie!

Looking at the Momentum Grade breakdown above, both Rogers Corporation and Sanmina Corporation have a grade of B. For those who focus solely on a company’s momentum, further research will need to be conducted into both companies to see if they fit your individual needs as an investor.

Other Rogers Corporation and Sanmina Corporation Grades

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

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

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.

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 Rogers Corporation and Sanmina Corporation pass any of our 60+ stock screens that have outperformed the market since their creation.

So, Which Is the Better Investment, Rogers Corporation or Sanmina Corporation Stock?

Overall, Rogers Corporation stock has a Value Score of 37, Momentum Score of 66 and Quality Score of 87.

Sanmina Corporation stock has a Value Score of 43, Momentum Score of 72 and Quality Score of 47.

Comparing Rogers Corporation and Sanmina Corporation’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.