Lam Research Corporation (LRCX)
Lam Research supplies wafer-fabrication equipment specializing in etch and deposition steps for advanced memory and logic chips.
Information Technology stock comparison
LRCX vs WDC: which business are you actually underwriting?
Compare Lam Research Corporation with Western Digital Corporation using their business models, SEC classifications, fiscal calendars, current primary filings, and the research questions that matter. This is a thesis framework—not a price target or automatic winner.
- Sector
- Information
- Industry
- Different SIC
- Shared themes
- 2
- Updated
- 2026-08-07
LRCX vs WDC: quick comparison
| Company fact | LRCX | WDC |
|---|---|---|
| Company | Lam Research Corporation | Western Digital Corporation |
| Exchange | NASDAQ | NASDAQ |
| Headquarters | Not recorded | Not recorded |
| Founded | Not recorded | Not recorded |
| SEC industry | Special Industry Machinery, NEC | Computer Storage Devices |
| Fiscal year-end | June 28 | July 3 |
| Latest annual filing | 10-K · 2026-08-07 | 10-K · 2025-08-14 |
How the businesses differ
Western Digital Corporation (WDC)
Western Digital makes hard-disk drives and flash storage products for data centers, PCs, and consumer devices.
The useful starting point is not which ticker has performed better. It is whether the two companies convert the same economic forces into revenue and cash flow in the same way. LRCX is classified by the SEC as Special Industry Machinery, NEC, while WDC is classified as Computer Storage Devices. The different industry codes are a warning against treating sector membership as proof of identical economics.
Which thesis does each company fit?
Use the distinction below to decide which filing deserves deeper work. It is a research routing rule, not a recommendation or prediction.
Study LRCX when…
- The AI capital-expenditure cycle
- Interest rates and the cost of long-duration growth
- Enterprise IT budgets and cloud migration
- Export controls and the US–China chip race
Study WDC when…
- The AI capital-expenditure cycle
- Interest rates and the cost of long-duration growth
- Enterprise IT budgets and cloud migration
- Export controls and the US–China chip race
Shared research themes
US marketsTariffs & trade
SEC filing comparison and disclosure evidence
Start with primary filings because fiscal calendars and accounting presentation can make superficially similar quarters incomparable.LRCX's fiscal year ends June 28, while WDC's ends July 3. Normalize the reporting periods before comparing growth, margins, capital intensity, or guidance.
The current verified House Clerk snapshot contains 0matched transaction rows for LRCXand 0 for WDC. These delayed, range-based disclosures can identify a filing to inspect; they do not establish motive, conviction, or a real-time trading signal.
LRCX primary filings
WDC primary filings
What this comparison cannot tell you
This page does not contain licensed live prices, a valuation model, earnings estimates, portfolio constraints, or a forecast of future returns. SEC classifications can be broad, company descriptions can lag strategic change, and the latest annual filing may predate a material acquisition or divestiture. Read subsequent quarterly and current reports before making a decision.
A stronger business is not automatically the better stock. Starting valuation, expectations, capital structure, cyclicality, dilution, and the probability of each thesis determine the investment outcome. Use this comparison to frame the work, then verify the numbers in the linked filings and current company disclosures.
LRCX vs WDC FAQs
Are LRCX and WDC direct competitors?
Lam Research Corporation and Western Digital Corporation sit in the same Information Technology sector but have different SEC industry classifications. The comparison is most useful for portfolio role and sector exposure, not as a claim that every product competes directly.
Which is better, LRCX or WDC?
There is no context-free winner. Compare the operating exposures, filing evidence, valuation, balance sheet, and risks against the specific thesis you are testing. This page deliberately does not turn a static profile into a buy or sell recommendation.
Does this LRCX vs WDC comparison include live prices?
No. Yield Theory does not republish unlicensed real-time market data. Use a regulated broker or licensed quote provider for current prices, then use the primary filings here to test the business thesis.
Where does the company information come from?
Company classifications, fiscal year-ends, and filing links come from the SEC EDGAR submissions API snapshot refreshed 2026-08-10. Business summaries and research themes are maintained by Yield Theory.
Data snapshot: SEC EDGAR submissions API, refreshed 2026-08-10. Independent educational research; not investment advice.
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