Sifting through countless of stocks in the Electrical 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 Eaton Corporation plc or Vicor 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 Eaton Corporation plc and Vicor Corporation compare based on key financial metrics to determine which better meets your investment needs.

About Eaton Corporation plc and Vicor Corporation

Eaton Corporation plc operates as a power management company in the United States, Canada, Latin America, Europe, and the Asia Pacific. The company operates through Electrical Americas, Electrical Global, Aerospace, Vehicle, and eMobility segments. It offers electrical components, industrial components, power distribution and assemblies, residential products, single and three phase power quality and connectivity products, wiring devices, circuit protection products, utility power distribution products, and power reliability equipment; and hazardous duty electrical equipment, emergency lighting, fire detection, intrinsically safe explosion-proof instrumentation, and structural support systems. It also provides pumps, motors, hydraulic power units, hoses and fittings, and electro-hydraulic pumps; valves, cylinders, electronic controls, electromechanical actuators, sensors, aircraft flap and slat systems, and nose wheel steering systems; hose, thermoplastic tubing products, fittings, adapters, couplings, and sealing and ducting products; air-to-air refueling systems, fuel pumps, fuel inerting products, sensors, and adapters and regulators; oxygen generation system, payload carriages, and thermal management products; wiring connectors and cables; hydraulic and bag filters, strainers and cartridges, and golf grips for manufacturers of commercial and military aircraft, and related after-market customers, as well as industrial applications. In addition, the company offers transmissions, clutches, hybrid power systems, superchargers, engine valves and valve actuation systems, locking and limited slip differentials, transmission controls, and fuel vapor components for the vehicle industry; voltage inverters, converters, fuses, circuit protection units, vehicle controls, power distribution systems, fuel tank isolation valves, and commercial vehicle hybrid systems. The company formerly known as Abeiron Limited. The company was founded in 1911 and is based in Dublin, Ireland.

Vicor Corporation, together with its subsidiaries, designs, develops, manufactures, and markets modular power components and power systems for converting electrical power for use in electrically powered devices in the United States, Europe, the Asia Pacific, and internationally. The company offers a range of brick-format DC-DC converters; complementary components that provide AC line rectification, input filtering, power factor correction, and transient protection; and input and output voltage, and output power products, as well as sells electrical and mechanical accessories. It also designs, sells, and services custom power system solutions. It serves independent manufacturers of electronic devices, original equipment manufacturers, original design manufacturers, and their contract manufacturers in the aerospace and aviation, defense electronics, satellites, factory automation, instrumentation, test equipment, transportation, telecommunications and networking infrastructure, and vehicle markets. Vicor Corporation was incorporated in 1981 and is headquartered in Andover, Massachusetts.

Latest Electrical Equipment and Eaton Corporation plc, Vicor Corporation Stock News

As of April 20, 2026, Eaton Corporation plc had a $158.1 billion market capitalization, compared to the Electrical Equipment median of $1.0 million. Eaton Corporation plc’s stock is up 28.6% in 2026, up 1.9% in the previous five trading days and up 51.42% in the past year.

Currently, Eaton Corporation plc’s price-earnings ratio is 39.0. Eaton Corporation plc’s trailing 12-month revenue is $27.4 billion with a 14.9% net profit margin. Year-over-year quarterly sales growth most recently was 13.1%. Analysts expect adjusted earnings to reach $13.305 per share for the current fiscal year. Eaton Corporation plc currently has a 1.0% dividend yield.

As of April 20, 2026, Vicor Corporation had a $10.0 billion market cap, putting it in the 78th percentile of all stocks. Vicor Corporation’s stock is up 124.7% in 2026, up 29.5% in the previous five trading days and up 381.7% in the past year.

Currently, Vicor Corporation’s price-earnings ratio is 86.1. Vicor Corporation’s trailing 12-month revenue is $407.7 million with a 29.1% net profit margin. Year-over-year quarterly sales growth most recently was 11.5%. Analysts expect adjusted earnings to reach $2.663 per share for the current fiscal year. Vicor Corporation does not currently pay a dividend.

How We Compare Eaton Corporation plc and Vicor 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 Eaton Corporation plc and Vicor Corporation’s stock grades to see how they measure up against one another.

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Eaton Corporation plc and Vicor Corporation Growth Grades

Company	Ticker	Growth
Eaton Corporation plc	ETN	A
Vicor Corporation	VICR	A

The foundation of growth investing is seeking out stocks of companies exhibiting strong, consistent and prolonged growth that is expected to continue into the future.

In order to compute the growth score and assign it a letter grade, the percentile ranks for each of three components‐consistency of annual sales growth, five-year sales growth rankings adjusted for extreme levels, and consistency of positive annual cash from operations‐must be determined. These three rank figures are added together, and the sum is ranked against the entire stock universe to arrive at a company’s Growth Score to create an equal distribution of grades.

The companies in the bottom 20% of the stock universe receive Growth Grades of F, considered to be very weak, while those in the top 20% receive A grades, which are considered very strong.

Eaton Corporation plc has a Growth Score of 100, which is Very Strong. Vicor Corporation has a Growth Score of 95, which is Very Strong.

The Growth Grade Winner: It’s a Tie!

Looking at the Growth Grade breakdown above, both Eaton Corporation plc and Vicor Corporation have a grade of A. For investors who focus solely on a company’s upward growth, further research should be conducted into both companies’ other financial metrics before deciding whether to invest.

Eaton Corporation plc and Vicor Corporation’s Momentum Grades

Company	Ticker	Momentum
Eaton Corporation plc	ETN	B
Vicor Corporation	VICR	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%.

Eaton Corporation plc has a Momentum Score of 72, which is Strong. Vicor Corporation has a Momentum Score of 97, which is Very Strong.

The Momentum Grade Winner: Vicor Corporation

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

Eaton Corporation plc and Vicor Corporation’s Estimate Revisions Grades

Company	Ticker	Earnings Estimate
Eaton Corporation plc	ETN	D
Vicor Corporation	VICR	A

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.

Eaton Corporation plc has a Earnings Estimate Score of 39, which is Negative. Vicor Corporation has a Earnings Estimate Score of 94, which is Very Positive.

The Earnings Estimate Revisions Grade Winner: Vicor Corporation

As you can clearly see from the Earnings Estimate Revisions Grade breakdown above, Vicor Corporation has a better Earnings Estimate Revisions Grade than Eaton Corporation plc. For those who are specifically looking for companies with better short-term prospects when compared to other companies in the same industry, Vicor 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 Eaton Corporation plc and Vicor Corporation Grades

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

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 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 Eaton Corporation plc and Vicor Corporation pass any of our 60+ stock screens that have outperformed the market since their creation.

So, Which Is the Better Investment, Eaton Corporation plc or Vicor Corporation Stock?

Overall, Eaton Corporation plc stock has a Growth Score of 100, Momentum Score of 72 and Estimate Revisions Score of 39.

Vicor Corporation stock has a Growth Score of 95, Momentum Score of 97 and Estimate Revisions Score of 94.

Comparing Eaton Corporation plc and Vicor 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.