Mouser Electronics

Disclosure context

Mouser is a privately held, wholly owned subsidiary, and neither Mouser nor TTI files standalone financial statements. Berkshire Hathaway's 10-K does not disclose TTI or Mouser revenue, earnings, balance sheet or cash flow. All of the following are therefore not publicly disclosed: gross profit, operating income, EBITDA, pre-tax and net income, earnings per share, dividends to the parent, margins, total assets, cash, debt, net debt, equity, goodwill, working capital, operating cash flow, capital expenditure, free cash flow, and every return, leverage and coverage ratio. The revenue figures below come from statements by Mouser management and company communications.

Revenue history (company-disclosed points)

Sources: 2018 revenue of about USD 1.9 billion from Mouser's 2019 Japan press briefing; the 2021 and 2022 figures from Mark Burr-Lonnon's interview with Power Systems Design (January 2023); the company's LinkedIn statement that 2022 revenue set a record above USD 4 billion.

Growth inferred from these figures:

Mouser's January 2023 EMEA release put total global revenue growth for 2022 at 25%. Management's interview figures (USD 3.2 billion to USD 4.1 billion) imply about 28%. The difference probably reflects rounding or currency effects.

Later years. The company has not published exact figures for 2023, 2024 or 2025. In announcing the leadership transition in November 2024, Glenn Smith said Mouser had grown from USD 10 million in sales in 1988 to "over $3 billion in revenue today". That wording implies 2024 revenue below the 2022 peak, consistent with the industry-wide inventory correction of 2023–2024. The Electronic Components Industry Association's Top 50 Americas Authorized Distributors report showed Americas distributor revenue falling 6.4% in 2023. Mouser has not published its own 2023–2025 revenue.

Trend commentary

2018–2019: steady compounding. Revenue rose about USD 550 million in 2018 alone, after about USD 402 million of growth over the whole 2014–2017 period. Growth in 2018 was strongest in embedded sensors (+46% year on year) and passives (+58%), driven by IoT design activity. Asia, including Japan, contributed the largest share of incremental revenue. In 2018 China accounted for 45% of Asia-Pacific sales and Japan 11%, and Japan grew 51% year on year.

2020–2022: the shortage boom. COVID-era demand and the 2021–2022 component shortage pushed authorized distributors into allocation. Mouser grew by about USD 2 billion in two years. It doubled its inventory, and management credited the scalability of its India support operations. Europe was the fastest-growing region for three consecutive years from 2021 to 2023.

2023–2024: normalization. Industry-wide destocking cut distributor revenue. Mouser kept investing through the downturn: it opened Pune, Lithuania and Melbourne offices and completed the 416,000 sq ft distribution-centre expansion. Management statements put revenue above USD 3 billion at the end of 2024.

2025–2026: recovery. Peer results point to a cyclical recovery. Arrow's 2025 sales rose 10% to USD 30.9 billion, and its Q4 2025 global components sales rose 22%. Mouser's suppliers cited "continued sales and customer growth" in their FY2025 and FY2025/26 awards (Harwin, RECOM, TE Connectivity and others). Some third-party web-traffic estimates indicate flat online sales in 2025. Neither view can be confirmed against company figures.

Profitability profile (qualitative). Catalogue distributors serving small-quantity buyers usually earn materially higher gross margins than volume distributors, because order sizes are small and service content is high. They also carry higher fulfilment cost per dollar of revenue. Arrow's global components segment earned an operating margin of about 3.6% in 2025, which serves as a lower-bound reference for the volume model. Mouser's own margins are not publicly disclosed.

Management guidance and consensus

Mouser issues no guidance and has no analyst consensus. Its public messaging for 2026 stresses line-card expansion, industrial automation and edge-AI design support. Industry signals point to a moderate recovery. Arrow sees the business in the early stages of a modest cyclical upturn. DigiKey planned for 4–6% industry growth in 2026. WSTS expects analog, discretes and sensors (Mouser's core categories) to grow about 3–10% in 2026, far below the headline semiconductor number, which is inflated by memory.

Bull case

1. The industrial cycle turns. Suppliers' FY2025/26 awards cite continued sales and customer growth (Harwin, RECOM, TE). If the industrial and design-activity upturn that drove Arrow's 22% Q4 2025 components growth continues, Mouser could return to its 2022 revenue peak above USD 4 billion within the next cycle.

2. Automation becomes a second engine. Schneider Electric's 27,000+ products, LUTZE and Omron give Mouser access to the large MRO and factory-automation market, beyond its traditional design-engineer base.

3. Operating leverage from capacity already built. The 416,000 sq ft expansion and the automation fleet (216 VLMs, 187 shuttles) were funded during the downturn, so incremental volume should flow through at high marginal profitability.

Bear case

1. Growth is concentrated outside Mouser's categories. Memory and AI logic, sold direct or through volume channels, account for most of the 2026 market expansion. Mouser's core categories grow at single digits.

2. Competitive intensity. DigiKey aims to grow at twice the industry rate, and manufacturers' direct channels compete for small buyers. Mouser's MDM rank has already slipped from 7th to 8th.

3. Legal and geopolitical tail risk. The Ukrainian diversion litigation survived the preemption challenge and has been repleaded. U.S.–China restrictions threaten a market that produced more than USD 500 million of revenue in 2022.

Key catalysts and monitorables (next 12 months)

• Ruling on repleaded Ukrainian claims (N.D. Tex. No. 3:25-cv-03046) — Expected timing: Late 2026 – 2027; Why it matters: Determines legal exposure and precedent for distributor diversion liability

• Mouser's annual "new manufacturers" and "New Product Insider" releases — Expected timing: January 2027; Why it matters: Tests NPI cadence: above or below 63 manufacturers and 40,000 parts

Supplier Distributor of the Year awards for 2026 performance: Expected timing: Q1–Q2 2027; Why it matters: Supplier view of share gains

CEO succession announcement: Expected timing: Any time; Why it matters: Smith's 53-year tenure; Newell in place as President

ECIA / SupplyChainConnect / MDM 2027 distributor rankings: Expected timing: Q2 2027; Why it matters: Relative position against DigiKey and the volume distributors

• U.S. export-control and tariff actions affecting China and third-country transshipment — Expected timing: Ongoing; Why it matters: Compliance cost and China revenue

Berkshire Hathaway FY2026 10-K: Expected timing: Late February 2027; Why it matters: Any disclosure of TTI performance or goodwill testing

Industrial automation line-card additions: Expected timing: Ongoing; Why it matters: Evidence of execution on the second growth engine

WSTS Autumn 2026 forecast for analog, discretes and sensors: Expected timing: December 2026; Why it matters: Demand backdrop for Mouser's core categories

Analyst verdict

Mouser Electronics is a high-quality franchise in a structurally attractive part of the semiconductor value chain: the authorized, design-in-focused catalogue channel through which almost every new electronic product begins life. Its strengths are concrete. It adds about 40,000 new parts and 60-plus new manufacturers a year. It runs one of the most automated single-hub distribution operations in North America. Suppliers recognise it with more than 25 awards a year, which shows its value as a customer-acquisition channel. And Berkshire Hathaway owns it with no exit horizon, which let Mouser expand warehouse capacity and inventory into the 2023–2024 correction when most competitors were cutting back.

The weaknesses are also real. Mouser's revenue is below its 2022 peak. Management cited "over $3 billion" at the end of 2024, against more than USD 4 billion in 2022, and no newer figure has been published. Its industry rank slipped in 2026 as volume distributors recovered faster and DigiKey pushed for share. The current semiconductor boom favours memory and AI data-centre logic, which flow largely outside Mouser's prototype-to-mid-volume model. The December 2025 diversion litigation exposed a vulnerability specific to open, web-scale distribution. The July 2026 dismissal was a procedural win, but the court rejected the defendants' preemption defence, so the risk remains.

On balance, Mouser enters 2027 well placed to benefit from a broad industrial and design-activity recovery. Its operating leverage is already built, and industrial automation gives it a credible second growth engine. The variables that matter most are a clean CEO succession, sustained NPI leadership against DigiKey, limits on legal exposure, and controlled exposure to China. Mouser's long-term outlook is favourable: durable franchise economics, permanent capital and above-industry design-in growth, offset by moderate cyclical, competitive and geopolitical risk. Because Mouser publishes no financial statements, outsiders will keep judging its performance mainly through supplier awards, line-card metrics and industry rankings rather than reported earnings.