Littelfuse, Inc. (LFUS) Stock

Littelfuse, Inc. (LFUS) is a Industrials stock trading at $412.00 (as of 2026-08-20), with a market capitalization of $10.42B and a trailing P/E of 42.4. Figures are sourced from first-party U.S. SEC EDGAR filings and market data.

Littelfuse, Inc. manufactures and sells circuit protection, power control, and sensing products across the Asia-Pacific, the Americas, and Europe. Its Electronics segment includes components such as fuses, resettable fuses, electrostatic discharge suppressors, varistors, magnetic sensing products, and transient voltage suppressor devices, while its Transportation segment offers fuses and related protection and sensor products for vehicle and commercial vehicle applications.

Understand Littelfuse, Inc.: how it makes money

Littelfuse makes and sells circuit protection, power control, and sensing products, and it earns revenue by selling fuses, TVS and other semiconductor protection devices, and related components to Electronics and transportation and industrial customers.

The company’s profitability is shaped by product mix and working-capital efficiency, with operating strength tied to its Electronics, Transportation, and Industrial net sales mix, and execution reflected in how long inventory sits on hand (Inventory Days on Hand).

Revenue by segment (latest quarter)
Electronics$0.4B
Transportation$0.2B
Industrial$0.1B

Business quality (Mixed): Clear product positioning in circuit protection and sensing, with reported gross margin of 38.7% and operating margin of 15.4% for the latest reported period, plus operating indicators that include Electronics End Customers and Inventory Days on Hand.

Bull case

  • Broad, application focused product set: Its Electronics segment includes fuses, TVS diodes and arrays, protection and switching thyristors, and sensing products, which supports serving multiple electronics protection and sensing use cases.
  • Healthy profitability in the latest period: Latest reported gross margin is 38.7% and operating margin is 15.4%, indicating it can translate sales into operating profit.

Bear case

  • Inventory can strain working capital: Inventory Days on Hand is 115, which can tie up cash and add risk if demand or product mix shifts.
  • Demand concentration across end markets: Net sales span Electronics, Transportation, and Industrial, so weakness in any one end market could impact consolidated results.
Valuation — source: SEC EDGAR (first-party)
Price$412.00
Market Cap$10.42B
P/E Ratio42.4
EV / EBITDA5.6
Price / Book4.14
Price / Sales4.25
FCF Yield4.5%
DCF Value (model)$367.91
DCF Upside vs Price-10.7%
Profitability & Growth — source: SEC EDGAR
Revenue (TTM)$2.39B
Net Margin-3.0%
Revenue Growth (YoY)8.9%
EPS Growth (YoY)-171.5%
FCF Growth (YoY)25.5%
Financial Health — source: SEC EDGAR
Altman Z-Score5.55 (safe)
Piotroski F-Score5/9 (moderate)
Valuation vs Sector & Industry
Stock P/E42.4
Sector P/E (Industrials)25.9
Industry P/E (Electrical Equipment)37.8
vs Sector63.9%
vs Industry12.3%
Smart-Money Activity — SEC Form 4 / 13F / Congressional disclosures
Top Institutional HolderBlackRock, Inc. ($797.15M)
Institutional Holders Tracked10
Congressional Trades (recent)3
Company
SectorIndustrials
IndustryElectrical Equipment
CEOGregory N. Henderson
Employees16,000
CountryUS
IPO Date1992-09-22

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LFUS earnings history · LFUS institutional & insider holders · LFUS KPIs & operating metrics · LFUS financials · LFUS investor presentations & press releases · LFUS SEC filings · LFUS peers · Congress trades · Insider trades · Short interest · Stock screener

Data as of 2026-08-20.

Figures sourced from U.S. Securities and Exchange Commission (SEC EDGAR) filings and market data. Not personalized investment advice.