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Companies / Information Technology / Monolithic Power Systems
MPWR

Monolithic Power Systems

Information TechnologySemiconductorsS&P 500
Ticker MPWRWEST PALM BEACH, FLFiscal year ends DecemberBook value per share $79.09Diluted shares 49.3M

Monolithic Power Systems, Inc. (Nasdaq: MPWR) is a fabless global semiconductor company that designs high-performance analog and mixed-signal power electronics solutions for storage and computing, enterprise data, automotive, communications, consumer and industrial applications. Its products include DC-to-DC and… From the company’s description.

In fiscal 2025, Monolithic Power Systems reported revenue of $2.79B, up 26.4% from fiscal 2024, and net income of $621.48M. Its operating margin was 26.1%, and operations generated $838.20M in cash. Over the twelve months to Jun 30, 2026, revenue was $3.27B.

Fiscal year 2025 · ends 12-31Changes are against fiscal 2024The amber dot is the latest twelve months, to 2026-06-30
Sales & profitability
$2.79BFY2025
+26.4% year over year
Last 12 mo $3.27B
26.11%FY2025
+1.7 percentage points
Last 12 mo 28.72%
$621.48MFY2025
−65.2% year over year
Last 12 mo $804.49M
17.60%FY2025
−39.2 percentage points
Last 12 mo 20.65%
Cash & financing
$838.20MFY2025
+6.3% year over year
Last 12 mo $822.34M
$666.19MFY2025
+3.7% year over year
Last 12 mo $585.54M
—
48.3MFY2025
−1.1% year over year
Last 12 mo 49.3M

Margins and return on equity change in ; everything else in percent. Fewer shares and less debt are shown plainly, not as bad news — it depends what you make of buybacks. Dotted labels explain each measure. is shown separately from the annual figures.

What Monolithic Power Systems does

In the company’s own words

Monolithic Power Systems, Inc. (Nasdaq: MPWR) is a fabless global semiconductor company that designs high-performance analog and mixed-signal power electronics solutions for storage and computing, enterprise data, automotive, communications, consumer and industrial applications. Its products include DC-to-DC and AC-to-DC converters, power management ICs, driver MOSFETs, current limit switches and lighting controls, used in systems such as servers, AI systems, vehicles, network infrastructure, appliances and memory and storage devices. The company works with customers’ engineering teams on product design and sells mainly through third-party distributors and value-added resellers. It operates as one business and reports revenue across end markets: storage and computing contributed 26.3% and enterprise data 25.2% of 2025 revenue, followed by automotive at 21.2%. Manufacturing, assembly and testing are outsourced to third parties, with the company applying its proprietary process and packaging technologies. Founded in 1997, Monolithic Power Systems employed 4,501 people worldwide as of December 31, 2025. Its website is www.monolithicpower.com.

Company details
Sector
Information Technology
Industry (SIC)
Semiconductors
Headquarters
WEST PALM BEACH, FL
Fiscal year end
December
CIK
1280452
SIC
3674

Financial performance, year by year

Fiscal 2013–2025 · USD
$-327.32M$654.63M$1.64B$2.62B$3.60B2013201420152016201720182019202020212022202320242025Last 12 moLast 12 monthsLast 12 months

The full income statement, balance sheet and cash flow for each of these years — every figure traceable to its filing — is on the Financials tab with a free account.

Ownership

Who owns Monolithic Power Systems — and what changed

Funds as of 2026Q2 · superinvestors as of 2026-06-30

1.0K
funds hold it
0 of 35
superinvestors hold it
$36.03B
held by funds, at market
49.8%
of shares held by funds

Largest fund holders · Monolithic Power Systems’s weight in each

Select Semiconductors Portfolio
FSELX · Fidelity Select Portfolios
5.19%of fund net assets
VANGUARD TOTAL STOCK MARKET INDEX FUND
VTI · VANGUARD INDEX FUNDS
0.09%of fund net assets
VANGUARD 500 INDEX FUND
VOO · VANGUARD INDEX FUNDS
0.11%of fund net assets
0.29%of fund net assets
iShares Semiconductor ETF
SOXX · iShares Trust
2.93%of fund net assets

Fund ownership is a floor, not a census — pensions, insurers and people holding shares directly are not visible here.

Fund ownership counts N-PORT filers only, so it is a floor rather than a census — pensions, insurers and direct holders are not visible here, and the remainder is not “held by individuals”.

Every fund and institutional holder, quarter by quarter, is on the Ownership tab with a free account.

Connected research

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  • “How do Monolithic Power Systems and its peers compare on margins and cash generation over ten years?”
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