Sifting through countless of stocks in the Technology Hardware, Storage & Peripherals 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 Seagate Technology Holdings plc or Western Digital 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 Seagate Technology Holdings plc and Western Digital Corporation compare based on key financial metrics to determine which better meets your investment needs.

About Seagate Technology Holdings plc and Western Digital Corporation

Seagate Technology Holdings plc engages in the provision of data storage technology and infrastructure solutions in Singapore, the United States, the Netherlands, and internationally. The company offers mass capacity storage products, including enterprise nearline hard disk drives (HDDs), enterprise nearline solid state drives (SSDs), enterprise nearline systems, video and image HDDs, and network-attached storage drives. It also offers legacy applications comprising Mission Critical HDDs and SSDs; external storage solutions under the Seagate Ultra Touch, One Touch, Expansion, and Basics product lines, as well as under the LaCie brand name; desktop drives for personal computers and workstation applications; notebook drives traditional notebooks, convertible systems, and external storage applications, DVR HDDs for video streaming applications, and gaming SSDs for gaming rigs. In addition, the company provides Lyve edge-to-cloud mass capacity platform, that includes modular hardware and software to support enterprises’ on-premise and cloud storage infrastructure needs. It sells its products primarily to original equipment manufacturers, distributors, and retailers. The company was founded in 1978 and is based in Singapore.

Western Digital Corporation develops, manufactures, and sells data storage devices and solutions based on hard disk drive (HDD) technology in the United States, Asia, Europe, the Middle East, and Africa. The company offers internal HDDs, data center drives, data center platforms, external drives, portable drives, NAS for home and office, and accessories. It sells its data storage devices and solutions through its computer manufacturers, sales personnel, dealers, distributors, and retailers. The company has a collaboration with Open Quantum Design for the development of quantum error correction technology and related systems to advance reliable quantum computing. Western Digital Corporation was founded in 1970 and is headquartered in San Jose, California.

Latest Technology Hardware, Storage & Peripherals and Seagate Technology Holdings plc, Western Digital Corporation Stock News

As of April 27, 2026, Seagate Technology Holdings plc had a $133.5 billion market capitalization, compared to the Technology Hardware, Storage & Peripherals median of $1.5 million. Seagate Technology Holdings plc’s stock is up 110.3% in 2026, up 3.5% in the previous five trading days and up 617.56% in the past year.

Currently, Seagate Technology Holdings plc’s price-earnings ratio is 67.1. Seagate Technology Holdings plc’s trailing 12-month revenue is $10.1 billion with a 19.6% net profit margin. Year-over-year quarterly sales growth most recently was 21.5%. Analysts expect adjusted earnings to reach $13.170 per share for the current fiscal year. Seagate Technology Holdings plc currently has a 0.5% dividend yield.

As of April 27, 2026, Western Digital Corporation had a $135.9 billion market cap, putting it in the 98th percentile of all stocks. Western Digital Corporation’s stock is up 125.9% in 2026, up 1.4% in the previous five trading days and up 897.59% in the past year.

Currently, Western Digital Corporation’s price-earnings ratio is 37.5. Western Digital Corporation’s trailing 12-month revenue is $10.7 billion with a 35.6% net profit margin. Year-over-year quarterly sales growth most recently was 25.2%. Analysts expect adjusted earnings to reach $9.010 per share for the current fiscal year. Western Digital Corporation currently has a 0.1% dividend yield.

How We Compare Seagate Technology Holdings plc and Western Digital 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 Seagate Technology Holdings plc and Western Digital Corporation’s stock grades to see how they measure up against one another.

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Seagate Technology Holdings plc and Western Digital Corporation Growth Grades

Company	Ticker	Growth
Seagate Technology Holdings plc	STX	D
Western Digital Corporation	WDC	F

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.

Seagate Technology Holdings plc has a Growth Score of 36, which is Weak. Western Digital Corporation has a Growth Score of 17, which is Very Weak.

The Growth Stock Winner: No Clear Winner

Neither Seagate Technology Holdings plc or Western Digital Corporation has a high enough Growth 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 portfolios. It’s important to look at a wide range of financial metrics in order to determine if Seagate Technology Holdings plc or Western Digital Corporation is the better investment when it comes to sustainable growth.

Seagate Technology Holdings plc and Western Digital Corporation’s Momentum Grades

Company	Ticker	Momentum
Seagate Technology Holdings plc	STX	A
Western Digital Corporation	WDC	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%.

Seagate Technology Holdings plc has a Momentum Score of 98, which is Very Strong. Western Digital Corporation has a Momentum Score of 99, which is Very Strong.

The Momentum Grade Winner: It’s a Tie!

Looking at the Momentum Grade breakdown above, both Seagate Technology Holdings plc and Western Digital Corporation have a grade of A. 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.

Seagate Technology Holdings plc and Western Digital Corporation’s Estimate Revisions Grades

Company	Ticker	Earnings Estimate
Seagate Technology Holdings plc	STX	B
Western Digital Corporation	WDC	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.

Seagate Technology Holdings plc has a Earnings Estimate Score of 73, which is Positive. Western Digital Corporation has a Earnings Estimate Score of 82, which is Very Positive.

The Earnings Estimate Revisions Grade Winner: Western Digital Corporation

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

In addition to Momentum, Growth and Estimate Revisions, 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 Seagate Technology Holdings plc and Western Digital Corporation pass any of our 60+ stock screens that have outperformed the market since their creation.

So, Which Is the Better Investment, Seagate Technology Holdings plc or Western Digital Corporation Stock?

Overall, Seagate Technology Holdings plc stock has a Growth Score of 36, Momentum Score of 98 and Estimate Revisions Score of 73.

Western Digital Corporation stock has a Growth Score of 17, Momentum Score of 99 and Estimate Revisions Score of 82.

Comparing Seagate Technology Holdings plc and Western Digital 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.