Littelfuse, Inc. (LFUS) Stock Price & How to Invest
Last updated July 2026
Short answer
LFUS is Littelfuse, a Rosemont, Illinois industrial-technology company and the global leader in circuit protection, now expanding into power semiconductors and sensing. Investors treat it as a quality electrification and industrial-cycle play that tends to trade at a premium multiple.
LFUS stock price
As of 2026-07-22, Littelfuse, Inc. (LFUS) last closed at $416.08, up 79.0% over the past year. Over the past 52 weeks it has traded between $228.31 and $489.10.
Prices are daily closing prices from Yahoo Finance and may be delayed. For the live quote, check your broker or Littelfuse, Inc.'s investor relations page. Walnut is informational, not investment advice.
What does Littelfuse, Inc. (LFUS) do?
Littelfuse (NASDAQ: LFUS), founded in 1927, designs and manufactures electronic components, modules and subassemblies focused on circuit protection, power control and sensing. It reports in three segments: Electronics (its largest, spanning fuses, semiconductors, ESD suppressors and varistors for data centers, industrial drives, aerospace and telecom), Transportation (fuses and sensors for passenger, commercial and off-road vehicles) and Industrial (protection and power products for grid storage, renewables, HVAC and industrial safety). The company is widely cited as the global leader in electronic fuses with a large share of that market.
The investment picture centers on electrification, data-center power, renewables and industrial automation as multi-year demand drivers, layered on top of a cyclical component business. Full-year 2025 revenue was roughly $2.4 billion, and Q1 2026 revenue jumped about 19 percent year over year (helped by the Basler acquisition and a foreign-exchange tailwind) with expanding margins. The stock has historically commanded a premium valuation, so the key tension is between a high-quality, cash-generative franchise and a multiple that leaves limited room for disappointment.
What's driving Littelfuse, Inc. (LFUS)?
1. Electrification and power semiconductors
Littelfuse is positioning its power-semiconductor and circuit-protection lines around EV infrastructure, industrial motor drives and grid electrification. Management frames this as a structural, multi-year content-growth story that raises the dollar value of protection and power components per system. Success here would lift both revenue and mix over time.
2. Data center and renewables demand
The Industrial segment has seen strong double-digit organic growth from grid storage, renewable energy, data centers and HVAC, and the Data Center business grew double digits in Q1 2026. These end markets tie Littelfuse to the same power-buildout tailwinds benefiting the broader electrical-equipment sector. Continued capex in AI-related data centers is a potential ongoing driver.
3. Margin expansion and acquisitions
Adjusted EBITDA margin expanded to roughly 22.9 percent in Q1 2026, up about 280 basis points, while free cash flow rose sharply. The Basler acquisition added revenue and broadens the sensing and vision portfolio. Bolt-on M&A plus operating leverage on recovering volumes is a core part of the earnings-growth thesis.
4. Diversified end markets and cyclical recovery
Exposure across electronics, transportation and industrial markets spreads risk across many customers and geographies. As component and automotive cycles recover from prior destocking, organic growth can reaccelerate. The breadth gives Littelfuse multiple paths to grow even if any single end market softens.
What are the risks to Littelfuse, Inc. (LFUS)?
Littelfuse is cyclical and sensitive to industrial production, auto builds and semiconductor inventory cycles, so a downturn in any of those can pressure revenue and margins. The stock has traded at a premium valuation (a forward P/E in the high-20s versus a lower historical median), and at least one valuation model flagged the shares as meaningfully above estimated fair value, so multiple compression is a real risk if growth slows. Insider selling with no offsetting buying has been noted in recent months. The company also carries integration and goodwill risk from acquisitions, exposure to foreign-exchange swings, tariff and supply-chain costs, and competition from larger and lower-cost rivals. Reported growth has been flattered by acquisitions and currency, so organic trends warrant close attention.
How is Littelfuse, Inc. (LFUS) valued? (approximate, July 2026)
A simple financial snapshot. These are approximations and refresh quarterly; for current figures see Littelfuse, Inc.'s investor relations page or your broker.
- Revenue (2025): ~$2.4B
- Q1 2026 revenue: ~$657M (up ~19% YoY)
- Q1 2026 adjusted EPS: ~$3.31
- Adjusted EBITDA margin: ~22.9%
- Market cap: ~$10-11B
- Forward P/E: ~27x
Q1 2026 revenue of about $657 million beat expectations and grew roughly 19 percent, with adjusted EPS near $3.31 well above the consensus estimate. The forward P/E in the high-20s sits above Littelfuse's five-year median near 24x, and one third-party model estimated the shares were trading well above fair value in mid-2026. Figures are approximate and drawn from recent filings and market data.
Who competes with Littelfuse, Inc. (LFUS)?
Circuit protection and fuses
Eaton (Bussmann series), Bourns and other fuse and protection makers compete directly in Littelfuse's core electronic and power fuse markets, with larger players leveraging scale on infrastructure projects and smaller ones competing on price and niche designs.
Sensors and electrical components
Sensata Technologies, Amphenol, CTS and Vishay Intertechnology overlap in sensing, interconnect and passive-component markets served by Littelfuse's Transportation and Electronics segments.
Power semiconductors
ON Semiconductor, Infineon, STMicroelectronics and similar power-semi suppliers compete with Littelfuse's growing semiconductor lines for EV, industrial and power-conversion designs.
How to invest in Littelfuse, Inc. (LFUS)
There are three common ways to get LFUS exposure. Buy shares (or fractional shares) directly at any major broker. Hold an ETF that includes it, which spreads the position across many companies. Or build it into a focused thematic basket, so LFUS sits alongside other stocks that express the same thesis.
Walnut takes the basket route. Describe a thesis where LFUS fits (for example “AI infrastructure” or “dividend-growth large-caps”) and the AI proposes 5 to 6 constituents with target weights. You review the plan and fund it through your own broker when you're ready.
New to this? Start with how to invest in stocks, see how to analyze a stock with AI, or compare the best AI stock analyzers.
The bottom line on Littelfuse, Inc. (LFUS)
Littelfuse is a durable circuit-protection franchise leaning into electrification, data centers and power semis, with the main debate being how much of that quality is already priced into a rich multiple.
More on Littelfuse, Inc. (LFUS)
Whether LFUS is worth buying today depends more on your time horizon and what you already hold than on any single call. We walk through valuation, what would have to go right, and the risks in is LFUS a buy?, and where the stock could go from here in the LFUS stock forecast.
For income investors, whether LFUS pays a dividend and how the payout looks is covered in does LFUS pay a dividend?
Build a basket around LFUS with Walnut
Use Littelfuse, Inc. as one constituent in a thematic basket Walnut's AI helps you assemble. Describe a thesis you believe in, the AI proposes the holdings and weights, and you approve before any broker order.
FAQ
What does Littelfuse do?
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Littelfuse designs and manufactures electronic components focused on circuit protection, power control and sensing. Its products include fuses, semiconductors, ESD suppressors, varistors, switches and sensors used in electronics, vehicles and industrial equipment.
What are Littelfuse's business segments?
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The company reports in three segments: Electronics (its largest), Transportation and Industrial. Electronics serves data centers, industrial drives, aerospace and telecom; Transportation serves vehicles; and Industrial serves grid storage, renewables, HVAC and industrial safety.
How big is Littelfuse?
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Littelfuse generated roughly $2.4 billion in revenue in 2025 and carries a market capitalization in the range of about $10 to $11 billion, placing it among mid-to-large-cap industrial technology companies.
Is LFUS profitable?
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Yes. Littelfuse is consistently profitable, reporting adjusted EPS near $3.31 in Q1 2026 and an adjusted EBITDA margin around 22.9 percent, alongside strong free cash flow generation.
What drives Littelfuse's growth?
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Key drivers include electrification, EV infrastructure, data-center power demand, renewable energy and industrial automation, plus bolt-on acquisitions such as Basler that expand its sensing and power portfolios.
Who are Littelfuse's competitors?
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Competitors include Eaton and Bourns in circuit protection, Sensata, Amphenol, CTS and Vishay in sensors and components, and ON Semiconductor, Infineon and STMicroelectronics in power semiconductors.
Is LFUS considered expensive?
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The stock has traded at a premium, with a forward P/E in the high-20s versus a five-year median near 24x, and at least one valuation model flagged it as trading above estimated fair value in mid-2026. Valuation is a common point of debate.
What are the main risks with LFUS?
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Risks include cyclical exposure to industrial, automotive and semiconductor demand, a rich valuation that could compress if growth slows, acquisition-integration and currency risk, tariff and supply-chain costs, and competition from larger and lower-cost rivals.
Walnut is informational, not investment advice. Financial figures on this page are approximations; always verify current numbers with Littelfuse, Inc.'s investor relations page or your broker before making investment decisions.