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STX vs WDC
Which Stock Would AI Choose? Seagate Technology Holdings (STX) vs. Western Digital (WDC) Stock Comparison
Key Takeaways
- Both STX and WDC are riding an AI-driven surge in demand for high-capacity hard disk drives (HDDs), making them two of the strongest large-cap performers in the broader technology sector.
- WDC repositioned itself as a pure-play HDD leader after spinning off its flash memory business, SanDisk, while STX retains a more diversified storage footprint.
- STX holds an early technology lead in HAMR (Heat-Assisted Magnetic Recording), whereas WDC has leaned on ePMR and UltraSMR drives for current-generation capacity gains.
- Both companies have locked in multi-year, build-to-order agreements with major cloud customers, improving revenue visibility into calendar 2026 and beyond.
- Relative performance has favored WDC over the trailing year, though STX has shown comparable earnings momentum on strong margin expansion.
Introduction
Seagate Technology Holdings plc (STX) and Western Digital Corporation (WDC) form a two-company duopoly at the heart of the global hard disk drive market. As cloud providers race to store the rapidly growing volume of data generated by artificial intelligence (AI) workloads, both stocks have moved sharply higher and become focal points for traders and investors assessing the "storage supercycle." This comparison examines how the two companies differ in business model, technology roadmap, growth drivers, and market positioning, helping readers evaluate their relative performance and where each may fit within a diversified portfolio.
STX Overview and Recent Performance
Seagate Technology Holdings is a leading designer and manufacturer of mass-capacity data storage, spanning HDDs and solid-state drives used in cloud data centers, enterprise systems, and edge devices. In recent weeks, investor sentiment toward STX has been shaped by sustained demand for high-capacity nearline drives, which now account for the majority of the company's revenue. The company's flagship Mozaic platform, built on HAMR (Heat-Assisted Magnetic Recording) technology, has supported record gross margins and a favorable shift toward higher-capacity products.
Recent earnings reports showed revenue growth above 20% year over year, with operating margin expanding well into the high-20s percentage range. Analysts have responded by raising price targets, citing disciplined capacity additions and strong pricing power. The stock has also experienced elevated volatility, with periodic moves of more than 5% in a single session, reflecting both the strength of the underlying demand cycle and sensitivity to broader technology-sector sentiment.
WDC Overview and Recent Performance
Western Digital Corporation is a pure-play leader in high-capacity HDDs for cloud and enterprise customers, following the February 2025 spin-off of its flash memory operations into SanDisk. In recent market activity, WDC has delivered some of the strongest returns among large-cap technology names, with revenue growth accelerating above 25% year over year in its latest quarter and operating margins exceeding 30%.
The company's momentum has been driven by rapid adoption of its ePMR (energy-assisted perpendicular magnetic recording) and UltraSMR (Shingled Magnetic Recording) drives, which offer leading 26TB and 32TB capacities favored by hyperscale cloud providers. Management has cited firm purchase orders from its top customers extending through calendar 2026, and the company has begun its own HAMR qualification roadmap. Like its rival, WDC has seen heightened volatility amid the broader AI infrastructure rally, though its inclusion in the Nasdaq-100 index has reinforced institutional interest.
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Head-to-Head Comparison
From a business-model standpoint, the two companies have converged on the same core opportunity—nearline HDDs for AI data storage—yet diverge in their approaches. STX has bet heavily on HAMR technology and has already shipped over a million Mozaic drives, positioning itself for a mix shift toward higher capacities in the second half of 2026. WDC, by contrast, has focused on scaling its ePMR and UltraSMR lineup today while preparing its own HAMR transition for later qualification.
On growth drivers, WDC has posted a slightly faster revenue trajectory and higher operating margins in recent quarters, aided by its post-spin-off focus and cost discipline. STX counters with a longer-standing HAMR lead and diversified edge and enterprise exposure. Both face similar risk factors: concentration in a small number of hyperscale buyers, historically cyclical demand, and the possibility that capacity additions eventually outpace demand. Market sentiment has rewarded both names, though relative momentum has favored WDC on a trailing-year basis.
Tickeron AI Verdict
Based on observable trend consistency, relative positioning, and near-term catalysts, Tickeron's AI would currently lean slightly toward WDC. The stock has demonstrated stronger recent revenue acceleration, higher operating margins, firmer multi-year order visibility, and superior trailing-year relative performance. That said, STX retains a meaningful technology edge in HAMR and comparable earnings momentum, making the gap narrow. The verdict reflects probabilistic assessment of current data rather than a definitive prediction, and either name could outperform depending on how the storage cycle unfolds.
Disclaimer
The information on this webpage is provided for general informational and educational purposes only and is not intended as investment advice, a recommendation to purchase or sell any security, or an offer or solicitation related to investments. It does not consider your personal financial situation, goals, or risk profile, and all investing carries inherent risks, including the possibility of losing your entire investment. For more details, please review our full disclaimer.
To compare these two companies we present long-term analysis, their fundamental ratings and make comparative short-term technical analysis which are presented below. The conclusion is STX is a Buy and WDC is a Buy.
STX | WDC | ||
|---|---|---|---|
OUTLOOK RATING 1..100 | 31 | 36 | |
VALUATION overvalued / fair valued / undervalued 1..100 | 93 Overvalued | 69 Overvalued | |
PROFIT vs RISK RATING 1..100 | 16 | 41 | |
SMR RATING 1..100 | 9 | 12 | |
PRICE GROWTH RATING 1..100 | 10 | 37 | |
P/E GROWTH RATING 1..100 | 7 | 83 | |
SEASONALITY SCORE 1..100 | 50 | 50 |
Tickeron ratings are formulated such that a rating of 1 designates the most successful stocks in a given industry, while a rating of 100 points to the least successful stocks for that industry.
WDC's Valuation (69) in the Computer Peripherals industry is in the same range as STX (93). This means that WDC’s stock grew similarly to STX’s over the last 12 months.
STX's Profit vs Risk Rating (16) in the Computer Peripherals industry is in the same range as WDC (41). This means that STX’s stock grew similarly to WDC’s over the last 12 months.
STX's SMR Rating (9) in the Computer Peripherals industry is in the same range as WDC (12). This means that STX’s stock grew similarly to WDC’s over the last 12 months.
STX's Price Growth Rating (10) in the Computer Peripherals industry is in the same range as WDC (37). This means that STX’s stock grew similarly to WDC’s over the last 12 months.
STX's P/E Growth Rating (7) in the Computer Peripherals industry is significantly better than the same rating for WDC (83). This means that STX’s stock grew significantly faster than WDC’s over the last 12 months.
| STX | WDC | |
|---|---|---|
| RSI ODDS (%) | N/A | N/A |
| Stochastic ODDS (%) | 1 day ago 78% | 1 day ago 69% |
| Momentum ODDS (%) | 1 day ago 82% | 1 day ago 69% |
| MACD ODDS (%) | 1 day ago 70% | 1 day ago 80% |
| TrendWeek ODDS (%) | 1 day ago 68% | 1 day ago 67% |
| TrendMonth ODDS (%) | 1 day ago 82% | 1 day ago 65% |
| Advances ODDS (%) | 5 days ago 79% | 5 days ago 82% |
| Declines ODDS (%) | 21 days ago 69% | 21 days ago 65% |
| BollingerBands ODDS (%) | 1 day ago 58% | 1 day ago 83% |
| Aroon ODDS (%) | 1 day ago 75% | 1 day ago 72% |
Long-Term Analysis
It is best to consider a long-term outlook for a ticker by using Fundamental Analysis (FA) ratings. The rating of 1 to 100, where 1 is best and 100 is worst, is divided into thirds. The first third (a green rating of 1-33) indicates that the ticker is undervalued; the second third (a grey number between 34 and 66) means that the ticker is valued fairly; and the last third (red number of 67 to 100) reflects that the ticker is overvalued. We use an FA Score to show how many ratings show the ticker to be undervalued (green) or overvalued (red).
STX’s FA Score shows that 4 FA rating(s) are green while WDC’s FA Score has 1 green FA rating(s).
- STX’s FA Score: 4 green, 1 red.
- WDC’s FA Score: 1 green, 4 red.
Short-Term Analysis
It is best to consider a short-term outlook for a ticker by using Technical Analysis (TA) indicators. We use Odds of Success as the percentage of outcomes which confirm successful trade signals in the past.
If the Odds of Success (the likelihood of the continuation of a trend) for each indicator are greater than 50%, then the generated signal is confirmed. A green percentage from 90% to 51% indicates that the ticker is in a bullish trend. A red percentage from 90% - 51% indicates that the ticker is in a bearish trend. All grey percentages are below 50% and are considered not to confirm the trend signal.
STX’s TA Score shows that 5 TA indicator(s) are bullish while WDC’s TA Score has 3 bullish TA indicator(s).
- STX’s TA Score: 5 bullish, 4 bearish.
- WDC’s TA Score: 3 bullish, 4 bearish.
Price Growth
STX (@Computer Processing Hardware) experienced а -3.74% price change this week, while WDC (@Computer Processing Hardware) price change was -2.56% for the same time period.
The average weekly price growth across all stocks in the @Computer Processing Hardware industry was +3.25%. For the same industry, the average monthly price growth was -2.09%, and the average quarterly price growth was +38.81%.
Reported Earning Dates
STX is expected to report earnings on Oct 28, 2026.
WDC is expected to report earnings on Oct 22, 2026.
Industries' Descriptions
@Computer Processing Hardware (+3.25% weekly)Computer Processing Hardware industry produces central processing unit, monitor, keyboard, computer data storage devices, and graphics card. Business activity and economic growth are potential drivers of this industry – if more businesses are growing or flourishing, so would their investments in computer equipment. Dell Technologies, Inc, Hewlett Packard Enterprise Co., NCR Corporation are key producers of computer processing hardware.
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STX and
Correlation & Price change
A.I.dvisor indicates that over the last year, STX has been closely correlated with WDC. These tickers have moved in lockstep 88% of the time. This A.I.-generated data suggests there is a high statistical probability that if STX jumps, then WDC could also see price increases.
| Ticker / NAME | Correlation To STX | 1D Price Change % | ||
|---|---|---|---|---|
| STX | 100% | +4.49% | ||
| WDC - STX | 88% Closely correlated | +6.34% | ||
| NTAP - STX | 40% Loosely correlated | -1.10% | ||
| P - STX | 40% Loosely correlated | +2.67% | ||
| QUBT - STX | 33% Poorly correlated | -2.93% | ||
| IONQ - STX | 32% Poorly correlated | -1.83% | ||
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WDC and
Correlation & Price change
A.I.dvisor indicates that over the last year, WDC has been closely correlated with STX. These tickers have moved in lockstep 88% of the time. This A.I.-generated data suggests there is a high statistical probability that if WDC jumps, then STX could also see price increases.
| Ticker / NAME | Correlation To WDC | 1D Price Change % | ||
|---|---|---|---|---|
| WDC | 100% | +6.34% | ||
| STX - WDC | 88% Closely correlated | +4.49% | ||
| NTAP - WDC | 58% Loosely correlated | -1.10% | ||
| ANET - WDC | 44% Loosely correlated | -0.22% | ||
| P - WDC | 43% Loosely correlated | +2.67% | ||
| QUBT - WDC | 36% Loosely correlated | -2.93% | ||
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