Vaisala Oyj (VAIAF) Stock Analysis & Winston Score

Vaisala is a Finnish company that makes sensors and measurement instruments used to track weather, humidity, temperature, and other environmental conditions. Its main products include weather stations, radiosondes (devices carried by weather balloons), and industrial sensors. Customers include national weather agencies, airports, renewable energy companies, and industrial manufacturers around the world.

The company earns revenue by selling hardware instruments and related software, services, and calibration support. Vaisala operates globally, with strong presence in Europe, North America, and Asia, and generates roughly €600 million in annual revenue. Its competitive edge comes from decades of specialized expertise and high customer switching costs — once a weather agency or industrial facility builds its operations around Vaisala equipment, replacing it is costly and disruptive. The key growth driver is rising demand for accurate weather data tied to wind and solar energy projects, though the business faces risk from larger industrial technology companies expanding into environmental sensing.

Winston Score History

Growth Profile

For growth stock investors

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

Revenue Growth

+1.0% YoY

YoY Growth Rate

Slow revenue growth

EPS Growth

+15.2% YoY

YoY Growth Rate

Steady EPS growth

R&D Spend

$68M/ year

→ Flat (-0% vs prior year)

11.4% of revenue

Below sector average (15%)

Steady R&D investment year-over-year

Insider Activity

49.9%ownership

Insiders own a meaningful stake in the company

Cash Position

Cash flow positive

$100M cash & investments

Quarterly Free Cash Flow

↑ Burn rate improving

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

Growth context

Vaisala Oyj is growing revenue at 1% year-over-year. The Winston Score measures business quality today — these growth metrics show what could matter tomorrow.

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

+0.2% over 4y

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

Diluted shares outstanding: 36.4M (2021) → 36.4M (2025)

Score breakdown

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Quality

Gross Margin

57.5%

Premium pricing power — 57.5% gross margin

Operating Margin

13.8%

Healthy — 13.8% operating margin

ROCE

4.9%

Weak — 4.9% return on capital

ROIC between 0% and 5%. They earn a few cents back per dollar invested in the business.

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Growth

Sales YoY

+1.8%

Nearly flat sales (1.8% YoY)

EPS YoY

-12.9%

Earnings shrinking (-12.9% YoY)

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

EPS Consistency

2/8 quarters

Earnings rarely grow — volatile business

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Cash Flow

Cash Conversion

147%

Turns 147% of profit into real cash

FCF Margin

12.1%

Converts sales into free cash efficiently (12.1%)

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

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Stability

Debt / Equity

0.24

Conservative — low debt load (0.24)

Interest Cover

4.28x

Adequate interest coverage (4.3x)

Interest coverage between 3 and 8. Profits cover interest several times over.

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Valuation

P/E Ratio (TTM)

34.8x

Pricey — P/E 34.8

P/E above the market average. People are paying up for expected growth.

P/E vs Forward

+10.1

GROWING

Earnings expected to grow meaningfully — cheaper on forward P/E (34.8 → 24.8)

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Dividends

Dividend Yield

1.52%

Small dividend — 1.52% yield

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

Dividend Growth

+24.2%

Dividend growing fast (24.2% YoY)

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