Electronic component provider Littelfuse (NASDAQ: LFUS) reported Q1 CY2026 results topping the market’s revenue expectations, with sales up 18.5% year on year to $657 million. Its non-GAAP profit of $3.31 per share was 16.5% above analysts’ consensus estimates.

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“Our teams delivered a strong start to the year, with first quarter results exceeding our expectations,” said Greg Henderson, Littelfuse President and Chief Executive Officer.

Company Overview

The developer of the first blade-type automotive fuse, Littelfuse (NASDAQ: LFUS) provides electrical protection and control components for the automotive, industrial, electronics, and telecommunications industries.

Revenue Growth

A company’s long-term performance is an indicator of its overall quality. Any business can have short-term success, but a top-tier one grows for years. Over the last five years, Littelfuse grew its sales at a solid 9.7% compounded annual growth rate. Its growth beat the average industrials company and shows its offerings resonate with customers.

We at StockStory place the most emphasis on long-term growth, but within industrials, a half-decade historical view may miss cycles, industry trends, or a company capitalizing on catalysts such as a new contract win or a successful product line. Littelfuse’s recent performance shows its demand has slowed as its annualized revenue growth of 4.3% over the last two years was below its five-year trend. We’re wary when companies in the sector see decelerations in revenue growth, as it could signal changing consumer tastes aided by low switching costs.

We can better understand the company’s revenue dynamics by analyzing its most important segments, Electronics and Automotive, which are 55.2% and 25.9% of revenue. Over the last two years, Littelfuse’s Electronics revenue (fuses and switches) averaged 14.3% year-on-year growth while its Automotive revenue (trucks, commercial machinery, marine) averaged 1.5% growth.

This quarter, Littelfuse reported year-on-year revenue growth of 18.5%, and its $657 million of revenue exceeded Wall Street’s estimates by 3.4%.

Looking ahead, sell-side analysts expect revenue to grow 9.3% over the next 12 months, an improvement versus the last two years. This projection is admirable and indicates its newer products and services will spur better top-line performance.

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Operating Margin

Littelfuse has been an efficient company over the last five years. It was one of the more profitable businesses in the industrials sector, boasting an average operating margin of 12.5%. This result isn’t surprising as its high gross margin gives it a favorable starting point.

Looking at the trend in its profitability, Littelfuse’s operating margin decreased by 17.8 percentage points over the last five years. This raises questions about the company’s expense base because its revenue growth should have given it leverage on its fixed costs, resulting in better economies of scale and profitability.

In Q1, Littelfuse generated an operating margin profit margin of 15.4%, up 2.7 percentage points year on year. The increase was encouraging, and because its operating margin rose more than its gross margin, we can infer it was more efficient with expenses such as marketing, R&D, and administrative overhead.

Earnings Per Share

Revenue trends explain a company’s historical growth, but the long-term change in earnings per share (EPS) points to the profitability of that growth – for example, a company could inflate its sales through excessive spending on advertising and promotions.

Littelfuse’s decent 8.7% annual EPS growth over the last five years aligns with its revenue performance. This tells us it maintained its per-share profitability as it expanded.

Like with revenue, we analyze EPS over a shorter period to see if we are missing a change in the business.

Littelfuse’s two-year annual EPS growth of 9.3% was decent and topped its 4.3% two-year revenue growth.

We can take a deeper look into Littelfuse’s earnings quality to better understand the drivers of its performance. Littelfuse’s operating margin has expanded over the last two years. This was the most relevant factor (aside from the revenue impact) behind its higher earnings; interest expenses and taxes can also affect EPS but don’t tell us as much about a company’s fundamentals.

In Q1, Littelfuse reported adjusted EPS of $3.31, up from $2.19 in the same quarter last year. This print easily cleared analysts’ estimates, and shareholders should be content with the results. Over the next 12 months, Wall Street expects Littelfuse’s full-year EPS of $11.80 to grow 17.4%.

Key Takeaways from Littelfuse’s Q1 Results

We were impressed by how significantly Littelfuse blew past analysts’ EBITDA expectations this quarter. We were also glad its revenue outperformed Wall Street’s estimates. Zooming out, we think this was a solid print. The stock traded up 5.7% to $445.98 immediately after reporting.

Littelfuse had an encouraging quarter, but one earnings result doesn’t necessarily make the stock a buy. Let’s see if this is a good investment. What happened in the latest quarter matters, but not as much as longer-term business quality and valuation, when deciding whether to invest in this stock. We cover that in our actionable full research report which you can read here (it’s free).