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 Amphenol Corporation or Coherent Corp. 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 Amphenol Corporation and Coherent Corp. compare based on key financial metrics to determine which better meets your investment needs.

About Amphenol Corporation and Coherent Corp.

Amphenol Corporation, together with its subsidiaries, designs, manufactures, and markets electrical, electronic, and fiber optic connectors in the United States, China, and internationally. It operates through three segments: Communications Solutions, Harsh Environment Solutions, and Interconnect and Sensor Systems. The company offers connectors and connector systems, including high speed, radio frequency, power, fiber optic and other interconnect products; busbars and power distribution systems; power interconnect products; and other products. It also provides value-add products, such as backplane interconnect systems, cable assemblies and harnesses, and cable management products; and other products comprising flexible and rigid printed circuit boards, hinges, other mechanical, and production related products. In addition, the company offers consumer device, network infrastructure, and other antennas; coaxial, power, and specialty cables; and sensors and sensor-based products. It sells its products through its sales force, independent representatives, and a network of electronics distributors to original equipment manufacturers, electronic manufacturing services companies, original design manufacturers, and service providers in the automotive, commercial aerospace, communications networks, defense, industrial, information technology and data communications, mobile devices markets. Additionally, the company provides telecommunication and IT networking solutions. The company was founded in 1932 and is headquartered in Wallingford, Connecticut.

Coherent Corp. develops, manufactures, and markets engineered materials, optoelectronic components and devices, and laser systems for the use in the industrial, communications, electronics, and instrumentation markets worldwide. It operates through three segments: Networking, Materials, and Lasers. The Networking segment offers transceivers, systems, subsystems, modules, components, optics, and semiconductor devices for datacenter and communications applications. The Materials segment provides engineered materials, laser optics, thermoelectric components, and advanced ceramic and metal-matrix composite materials and products; and vertical-cavity surface-emitting laser, edge-emitting laser, pump lasers, high-power lasers for materials processing, and integrated circuit. The Laser segment offers excimer lasers, solid-state lasers, CO2 lasers, and laser systems for various industrial applications, including semiconductor capital equipment, display manufacturing, precision manufacturing, and scientific research; and laser systems and subsystems. It markets its products and services through direct sales force, representatives, and distributors. The company was formerly known as II-VI Incorporated and changed its name to Coherent Corp. in September 2022. Coherent Corp. was incorporated in 1971 and is headquartered in Saxonburg, Pennsylvania.

Latest Electronic Equipment, Instruments & Components and Amphenol Corporation, Coherent Corp. Stock News

As of July 31, 2026, Amphenol Corporation had a $197.7 billion market capitalization, compared to the Electronic Equipment, Instruments & Components median of $995.2 million. Amphenol Corporation’s stock is up 18.9% in 2026, up 5.3% in the previous five trading days and up 52.34% in the past year.

Currently, Amphenol Corporation’s price-earnings ratio is 46.2. Amphenol Corporation’s trailing 12-month revenue is $25.9 billion with a 17.7% net profit margin. Year-over-year quarterly sales growth most recently was 58.4%. Analysts expect adjusted earnings to reach $5.317 per share for the current fiscal year. Amphenol Corporation currently has a 0.6% dividend yield.

As of July 31, 2026, Coherent Corp. had a $51.4 billion market cap, putting it in the 94th percentile of all stocks. Coherent Corp.’s stock is up 42.4% in 2026, down 6.9% in the previous five trading days and up 145.17% in the past year.

Currently, Coherent Corp.’s price-earnings ratio is 109.8. Coherent Corp.’s trailing 12-month revenue is $6.6 billion with a 7.1% net profit margin. Year-over-year quarterly sales growth most recently was 20.5%. Analysts expect adjusted earnings to reach $5.451 per share for the current fiscal year. Coherent Corp. does not currently pay a dividend.

How We Compare Amphenol Corporation and Coherent Corp. 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 Amphenol Corporation and Coherent Corp.’s stock grades to see how they measure up against one another.

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Amphenol Corporation and Coherent Corp. Stock Value Grades

Company	Ticker	Value
Amphenol Corporation	APH	F
Coherent Corp.	COHR	F

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.

Amphenol Corporation has a Value Score of 10, which is Ultra Expensive. Coherent Corp. has a Value Score of 4, which is Ultra Expensive.

The Value Stock Winner: No Clear Winner

Neither Amphenol Corporation or Coherent Corp. 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 Amphenol Corporation or Coherent Corp. is the better investment when it comes to value.

Amphenol Corporation and Coherent Corp.’s Momentum Grades

Company	Ticker	Momentum
Amphenol Corporation	APH	B
Coherent Corp.	COHR	A

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%.

Amphenol Corporation has a Momentum Score of 76, which is Strong. Coherent Corp. has a Momentum Score of 88, which is Very Strong.

The Momentum Grade Winner: Coherent Corp.

As you can clearly see from the Momentum Grade breakdown above, Coherent Corp. is considered to have stronger momentum compared to Amphenol Corporation. For those specifically looking for companies that have stronger momentum compared to other companies in the same industry, Coherent Corp. 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.

Amphenol Corporation and Coherent Corp.’s Estimate Revisions Grades

Company	Ticker	Earnings Estimate
Amphenol Corporation	APH	A
Coherent Corp.	COHR	C

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.

Amphenol Corporation has a Earnings Estimate Score of 83, which is Very Positive. Coherent Corp. has a Earnings Estimate Score of 47, which is Neutral.

The Earnings Estimate Revisions Grade Winner: Amphenol Corporation

As you can clearly see from the Earnings Estimate Revisions Grade breakdown above, Amphenol Corporation has a better Earnings Estimate Revisions Grade than Coherent Corp.. For those who are specifically looking for companies with better short-term prospects when compared to other companies in the same industry, Amphenol Corporation could be a good stock to invest in. However, it’s important to analyze multiple factors based on a wide range of metrics before deciding whether to buy.

Other Amphenol Corporation and Coherent Corp. Grades

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

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.

AAII’s A+ Investor Quality Grade comes from the ranking of key metrics. Specifically, the quality grade is the percentile rank of the composite 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 F-Score.

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 Amphenol Corporation and Coherent Corp. pass any of our 60+ stock screens that have outperformed the market since their creation.

So, Which Is the Better Investment, Amphenol Corporation or Coherent Corp. Stock?

Overall, Amphenol Corporation stock has a Value Score of 10, Momentum Score of 76 and Estimate Revisions Score of 83.

Coherent Corp. stock has a Value Score of 4, Momentum Score of 88 and Estimate Revisions Score of 47.

Comparing Amphenol Corporation and Coherent Corp.’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.