Littelfuse (LFUS) Stock Fundamentals, Analysis & Risk Signals

Health score, price, valuation, risk signals, and key metrics at a glance.

Littelfuse

NasdaqGS•Technology•Electronic Components

$351.39+1.11(<0.01%)Pre-market

Market Cap

$10.48B

P/E

277.4x

P/S

3.8x

P/B

3.8x

Littelfuse, Inc. designs, manufactures, and sells electronic components, modules, and subassemblies. It operates through three segments: Electronics, Transportation, and Industrial. Its Electronics segment offers fuses and fuse accessories, coefficient resettable fuses, switches and interconnect solutions, polymer electrostatic discharge suppressors, varistors, reed switch based magnetic sensing, and gas discharge tubes; and discrete transient voltage suppressor diodes, TVS diode arrays, protection and switching thyristors, silicon and silicon carbide metal-oxide-semiconductor field effect transistors and diodes, and insulated gate bipolar transistors. This segment serves data center computing and communications infrastructure, industrial controls, building controls, aerospace and defense, appliances, consumer electronics solutions, healthcare solutions, industrial equipment, energy storage, diversified industrials, grid and utility infrastructure, passenger vehicles, and commercial vehicles. Its Transportation segment provides blade, resettable, high-current, and high-voltage fuses; battery cable protectors; circuit breakers, and power distribution modules; and sensor products. This segment serves heavy-duty truck and bus, construction, agriculture, off-road and recreational vehicles, material handling, passenger and commercial vehicles, and marine markets. Its Industrial segment offers industrial fuses, protection relays, contactors, transformers, residual current devices and monitors, ground fault circuit interrupters, arc fault detection devices, solid state switches, and temperature sensors for use in renewable energy and energy storage systems, electric vehicle infrastructure, HVAC systems, industrial safety, non-residential construction, MRO, mining, and factory automation applications. It sells its products through distributors, direct sales force, and manufacturers' representatives. The company was founded in 1927 and is headquartered in Rosemont, Illinois.

How this company scores

GoodMetricSide Score: 74/100

Strongest: Balance Sheet & Red Flags (25/25); weakest: Profitability (9/25).

Profitability9/25

Growth15/25

Balance Sheet & Red Flags25/25

Cash & Earnings Quality25/25

Strengths

Growing revenueRising free cash flowLow leverageInterest easily covered

Valuation vs. 5-year range

Today's multiple positioned against its own trailing range — a visual premium/discount check.

P/E · 277.4x5y range 16.5x – 277.4x

Currently above its 17-quarter median.

P/S · 3.8x5y range 2.3x – 4.4x

Currently above its 20-quarter median.

P/B · 3.8x5y range 2.0x – 4.4x

Watch items

Data-driven signals worth keeping an eye on across the last 8 quarters

High Risk

Margin Pressure

Red Flag

Operating margins dropped 58.6% over recent quarters — a sharp decline suggesting serious cost or pricing challenges.

Share Dilution

Watch

Shares outstanding rose 2.6% — mild dilution. Compare to earnings growth to assess the net per-share impact.

Price & Volume

Market Cap $10.48B

Metrics at a Glance

as of September 2026

Revenue & Profit

Revenue, EBITDA, operating income, net income, EPS, and shares

TTM Revenue: $2.76B
Q. Revenue: $766.73M
TTM EBITDA: $289.97M
TTM Op. Income: $151.43M
Q. Op. Income: $153.36M
TTM Net Income: $37.79M
Q. Net Income: $115.38M
EPS: $4.54
Shares Out.: $25.40M

$2.76B in TTM revenue grew 18.7% YoY, reaching $766.73M last quarter. TTM EBITDA of $289.97M and TTM operating income of $151.43M show growth is flowing through to the bottom line. TTM net income of $37.79M means revenue is converting into profit. Across the last 8 quarters, TTM revenue has risen for 7 consecutive quarters — an improving trend.

Margins

Gross, EBITDA, operating, and net margin trends

Gross Margin: 41.5%
EBITDA Margin: 24.5%
Op. Margin: 20.0%
Net Margin: 15.0%

Op. margin of 20.0% is up 4.4% YoY — cost efficiency is improving. Net margin at 15.0% and gross margin of 41.5% show how much of each revenue dollar survives to profit. Across the last 8 quarters, operating margin has risen for 3 consecutive quarters — an improving trend.

Price Ratios

P/E, P/S, P/B, EV/EBITDA, FCF yield, and earnings yield

P/E Ratio: 277.4x
P/S Ratio: 3.8x
P/B Ratio: 3.8x

At 277.4x P/E, the stock trades above typical market levels — the market expects above-average growth. P/S of 3.8x and P/B of 3.8x provide additional context. Use the growth and margin sections to judge whether the multiple is justified. Across the last 5 quarters, P/E has risen for 2 consecutive quarters — a weakening trend.

Assets & Liabilities

Total assets, cash, debt, book value, and leverage

Total Assets: $4.23B
Cash: $824.84M
Long-Term Debt: $529.93M
Book Value: $2.72B
D/E Ratio: 0.2
Debt/EBITDA: 2.8

With $4.23B in assets and $529.93M in long-term debt, D/E is 0.2and book value is $2.72B — a conservative capital structure with a cushion to weather downturns. Across the last 8 quarters, debt/equity has fallen for 7 consecutive quarters — an improving trend.

Cash Flow

Operating cash flow, free cash flow, FCF margin, and earnings quality

Op. Cash Flow: $230.16M
TTM Free Cash Flow: $528.88M
FCF Margin: 19.2%
FCF / Net Income: 14.0

TTM FCF of $528.88M on $230.16M in operating cash flow. The FCF / Net Income ratio of 14.0x means free cash flow covers net income — earnings are backed by cash. Across the last 8 quarters, free cash flow has risen for 3 consecutive quarters — an improving trend.