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Ambiq Micro

AMBQ
25
Semiconductors · Technology
Price
$72.43
-2.03 (-2.73%)
Market Cap
$1.73B
Winston Score
25
Winston is worried
Below-average fundamentals — multiple weak pillars.

Share count falling — buybacks

41.4% over 5y

The company has reduced its share count over this period, returning value to shareholders through buybacks.

Diluted shares outstanding: 13.6M (2020) → 8.0M (2025)

Ambiq Micro makes tiny computer chips designed to use as little battery power as possible. These chips go inside small, battery-powered devices like smartwatches, fitness trackers, hearing aids, and wireless earbuds. The company competes in the semiconductor industry, where its main selling point is ultra-low power consumption compared to standard chips.

Ambiq sells its chips to device manufacturers, primarily in Asia, who build the finished consumer electronics products. The company is relatively small, and its negative operating margin shows it is still spending more than it earns, which is common for growth-stage chip companies. The key growth driver is the expanding market for wearable devices and always-on AI features at the edge, but the main risk is intense competition from larger, better-funded chipmakers like Nordic Semiconductor and Arm-based chip vendors who are also targeting low-power applications.

Winston Score History

Growth Profile

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

Revenue Growth

+59.3% YoY

YoY Growth Rate

Revenue accelerating

EPS Growth

+18.0% YoY

YoY Growth Rate

Steady EPS growth

R&D Spend

$34M/ year

Declining (-9% vs prior year)

46.5% of revenue

3.1x the sector average (15%)

R&D spend declining — could signal cost-cutting or efficiency

Insider Activity

23.2%ownership

Flat

Insiders holding steady — not selling despite ability to

Cash Runway

~3 years

$205M cash & investments

Quarterly Free Cash Flow

↓ Burn rate worsening

$205M cash & investments at current burn rate

Revenue accelerating

Ambiq Micro grew revenue 59% 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.

Score breakdown

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Quality

Gross Margin
43.5%
Healthy — 43.5% gross margin
Operating Margin
-46.6%
Losing money on operations — -46.6%
ROCE
-4.9%
Weak — -4.9% return on capital

Negative ROIC means the business is losing money on every dollar invested in it.

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Growth

Sales YoY
+6.9%
Slow sales growth (6.9% YoY)
EPS YoY
N/A
Data not available
EPS Consistency
0/8 quarters
Earnings rarely grow — volatile business

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Cash Flow

Cash Conversion
N/A
Data not available
FCF Margin
-50.9%
Burning cash (-50.9%)

Free cash flow is negative. They are burning cash, not generating it.

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Stability

Debt / Equity
0.00
Conservative — low debt load (0.00)
Interest Cover
N/A
Data not available

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Valuation

P/E Ratio (TTM)
N/M
Negative earnings — P/E not meaningful
P/E vs Forward
N/A
not available
Data not available

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Dividends

Not applicable for this business.
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