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Monolithic Power Systems

MPWR
68
Semiconductors · Technology
Price
$1316.28
+5.68 (+0.43%)
Market Cap
$64.67B
Exchange
NASDAQ
Winston Score
68
Winston is curious
A decent business — some strong pillars, some weaker.
Data as of Aug 23, 2026 · filings through Jun 30, 2026
How the score breaks down
Quality
Exceptional
Growth
Strong
Cash Flow
Strong
Stability
Good
Valuation
Good
Dividends
Good

Winston Score History

The full picture

Monolithic Power Systems (MPS) designs small, efficient chips called power management integrated circuits (PMICs). These chips control how electricity flows inside electronic devices, making sure each component gets exactly the right amount of power. MPS sells to customers in markets like cloud computing, electric vehicles, industrial equipment, and consumer electronics — with major tech companies and data center operators among its biggest buyers.

MPS earns money by selling its chips to manufacturers who build them into their products. The company operates globally, with a large portion of revenue coming from Asia-based manufacturers, and generates roughly $2 billion in annual revenue. Its competitive edge comes from designing highly integrated chips that are smaller and more efficient than many rivals, reducing the need for extra components. The biggest growth driver is demand from AI data centers, which require large amounts of power management silicon — but heavy customer concentration and intense competition from larger chipmakers like Texas Instruments remain key risks.

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Growth Profile

When traditional metrics don't capture the full picture, these are the signals growth stock investors use instead.

Revenue Growth

+47.6% YoY

YoY Growth Rate

Revenue accelerating

EPS Growth

+87.5% YoY

YoY Growth Rate

Strong earnings growth

R&D Spend

$382M/ year

Rising (+18% vs prior year)

13.7% of revenue

In line with sector average (15%)

Investing heavily in future products and technology

Insider Activity

3.6%ownership

Flat

Insider ownership roughly steady over the past year

Cash Position

Cash flow positive

$1.4B cash & investments

Quarterly Free Cash Flow

→ Burn rate stable

Company generates more cash than it spends — no dilution risk from fundraising

Revenue accelerating

Monolithic Power Systems grew revenue 48% year-over-year and the growth rate is speeding up. That's the kind of momentum growth investors look for — the question is whether margins can follow.

The Winston Score above measures business quality today. Growth stocks often score lower because they invest in the future rather than maximising current profits. These metrics show what matters most for evaluating that future.

Share count broadly stable

+0.9% over 4y

The share count has stayed roughly flat over this period — little dilution or buyback activity.

Diluted shares outstanding: 47.9M (2021) → 48.3M (2025)

Score breakdown

Every number that matters to educated investors.

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Quality

Profit per sale
Gross Margin
55.2%
Premium pricing power — 55.2% gross margin
Profit after running costs
Operating Margin
31.0%
Excellent — 31.0% operating margin
Return on the money invested
ROCE
24.1%
Exceptional — 24.1% return on capital

ROIC between 15% and 25%. Every dollar invested in the business earns 15 to 25 cents back per year.

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Growth

Sales growth
Sales YoY
+28.7%
Fast-growing sales (+28.7% YoY)
Profit growth
EPS YoY
-57.5%
Earnings shrinking (-57.5% YoY)

Earnings per share down more than 10%. Either a bad year, or a real decline.

How steady the profit is
EPS Consistency
7/8 quarters
Every recent quarter grew earnings vs last year

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Cash Flow

Profit that turns into cash
Cash Conversion
104%
Turns 104% of profit into real cash
Spare cash per sale
FCF Margin
19.2%
Converts sales into free cash efficiently (19.2%)

FCF margin between 10% and 20%. Every $100 in sales becomes $10 to $20 in real cash.

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Stability

What it owes vs what it owns
Debt / Equity
N/A
Data not available
Covers its interest
Interest Cover
100.00x
Comfortably covers interest (100.0x)

Interest coverage above 8. Profits cover interest many times over.

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Valuation

Price vs profit
P/E Ratio (TTM)
80.3x
Expensive — P/E 80.3

P/E over 35. The market is pricing in heavy, sustained growth.

Cheaper or dearer next year
P/E vs Forward
+47.0
GROWING
Earnings expected to grow meaningfully — cheaper on forward P/E (80.3 → 33.3)

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Dividends

Dividend
Dividend Yield
0.54%
Small dividend — 0.54% yield

Modest yield. The bulk of any return needs to come from price appreciation.

Dividend record
Dividend Growth
+26.7%
Dividend growing fast (26.7% YoY)

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