AIFF vs PHG vs QDEL Stock Comparison

Firefly Neuroscience, Koninklijke Philips and QuidelOrtho Prices as of Nov 5, 2026 Peers: Industry group
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PHG Koninklijke Philips Nv
$30.49 +26.2% 1M +8.6% 1Y
Market cap
$29.36B
P/E
15.2x
Revenue (TTM)
$30.13B
Div. yield
3.25%
Diagnostic Equipment Healthcare
7 wins
QDEL QuidelOrtho Corp
$12.84 +2.1% 1M -53.1% 1Y
Market cap
$880.82M
P/E
–
Revenue (TTM)
-$219.40M
Div. yield
–
Diagnostic Equipment Healthcare

Head to Head

8 decided of 12

Koninklijke Philips leads on 7 of the 12 questions below (Koninklijke Philips 7, Firefly Neuroscience 1). Which ones matter depends on what you are buying for; a cheap multiple and slow growth often come together.

QuestionAIFFPHGQDELLeader
Larger companyMarket capitalisation $18.93M $29.36B $880.82M PHG
Cheaper on earningsLower P/E, profitable companies only -2.0x 15.2x -2.4x –
Cheaper on forward earningsLower price / next fiscal year consensus EPS — 15.4x 17.1x PHG
Faster revenue growthRevenue growth, trailing twelve months +320.3% +53.4% -32.3% AIFF
More profitableNet margin, trailing twelve months -524.5% 6.3% — PHG
Better return on capitalReturn on invested capital — 12.4% — –
Less leveragedLower net debt / EBITDA — 1.4x — –
Higher dividend yieldTrailing dividend yield — 3.25% — –
Better 1-year returnPrice return, last 12 months -48.0% +8.6% -53.1% PHG
Better 5-year returnAnnualised price return, 5 years -60.6%/yr -8.6%/yr -36.2%/yr PHG
Less volatileAnnualised volatility, 1 year 160.0% 29.7% 93.8% PHG
Higher overall scoreMean of the five percentile scores vs peers 39/100 80/100 28/100 PHG

Percentile Scorecard

AIFFPHGQDEL

Each axis is the mean percentile of its metrics against the company's industry group. 100 is the best in the group, 50 the middle.

Scores by Axis

AxisAIFFPHGQDEL
Valuation 15 #194 of 229 97 #7 of 229 58 #98 of 229
Growth 60 #90 of 221 99 #3 of 221 10 #199 of 221
Profitability 14 #180 of 210 92 #18 of 210 –
Financial Health 83 #42 of 240 34 #158 of 240 10 #217 of 240
Shareholder Returns 23 #114 of 147 80 #31 of 147 36 #94 of 147
Overall 39 80 28
  • AIFF ranked among 247 companies in Medical Devices and Diagnostics
  • PHG ranked among 247 companies in Medical Devices and Diagnostics
  • QDEL ranked among 247 companies in Medical Devices and Diagnostics

Price Performance

Price return, split-adjusted, before dividends. Click a name to hide or show it.

Returns

PeriodAIFFPHGQDELSPY
1 month -26.4%+26.2%+2.1% -5.9%
3 months -17.9%+15.8%-21.3% -4.6%
6 months -51.6%+12.3%+19.2% +0.2%
Year to date +4.5%+12.6%-55.0% +7.5%
1 year -48.0%+8.6%-53.1% +8.2%
3 years -77.8%+51.8%-79.6% +68.3%
3 years, per year -39.5%+14.9%-41.1% +19.0%
5 years -99.0%-36.1%-89.4% +56.5%
5 years, per year -60.6%-8.6%-36.2% +9.4%
10 years -79.6%+3.2%-31.6% +251.5%
10 years, per year -14.7%+0.3%-3.7% +13.4%

Risk

MeasureAIFFPHGQDELSPY
Volatility, 1Y 160.0%29.7%93.8% 13.6%
Downside volatility, 1Y 109.4%27.8%101.9% 14.2%
Beta vs S&P 500, 1Y 1.640.852.55 1.00
Return / volatility, 1Y -0.300.29-0.57 0.60
Max drawdown, 5Y -99.6%-75.6%-94.3% -25.4%
From 52-week high -69.5%-7.4%-63.7% -5.9%
52-week high $3.02$32.91$35.38 $779.14
52-week low $0.64$23.81$9.96 $631.97

Valuation History

Weekly multiples on trailing twelve-month fundamentals. Negative or extreme readings (a loss year, a collapsed denominator) are left out so the chart stays readable.

MultipleAIFFPHGQDEL
P/E now vs peer median -2.0xmedian 26.9x 15.2xmedian 26.9x -2.4xmedian 26.9x
P/S now vs peer median 10.5xmedian 2.9x 1.0xmedian 2.9x -4.0xmedian 2.9x
EV/EBITDA now vs peer median -1.1xmedian 17.5x 8.3xmedian 17.5x —median 17.5x
P/FCF now vs peer median -2.6xmedian 26.4x 5.6xmedian 26.4x -7.5xmedian 26.4x
P/B now vs peer median 1.3xmedian 2.3x 2.2xmedian 2.3x 0.5xmedian 2.3x
PEG now vs peer median -0.03median 0.88 0.22median 0.88 0.03median 0.88

Financial History

Reported figures by fiscal period, placed on the calendar year (or quarter) each period ended in, so companies with different fiscal years line up.

Trailing twelve monthsAIFFPHGQDEL
Revenue $1.80M $30.13B -$219.40M
Gross profit $802.00K $16.13B –
Operating income -$9.14M $2.79B –
Net income -$9.11M $1.45B -$369.20M
Free cash flow -$7.20M $5.23B -$117.10M
R&D $1.78M $1.99B –
EPS (diluted) $-0.70 $1.98 $-5.37
Cash & equivalents $9.23M $3.12B $166.40M
Total debt – $9.23B $2.94B
Shares (diluted) 13.50M 962.50M 68.70M
Enterprise value -$492.79K $17.66B $280.82M

All Metrics

58 metrics · best in bold

Bold marks the best reading: the lowest positive value for multiples, leverage and payout, the highest for everything else. The bar under each value is its percentile against that company's own peers. Hover a value for its rank and the peer median.

Valuation

12 metrics
MetricAIFFPHGQDEL
P/E -2.0x 15.2x -2.4x
P/FCF -2.6x 5.6x -7.5x
P/Operating cash flow -2.7x 8.3x 111.5x
P/S 10.5x 1.0x -4.0x
P/B 1.3x 2.2x 0.5x
P/Tangible book 1.4x 2.9x -1.1x
EV/EBITDA -1.1x 8.3x –
EV/EBIT -1.1x 12.7x –
EV/Revenue 5.4x 1.2x -16.6x
EV/FCF -1.3x 6.8x -31.2x
EV/Operating cash flow -1.4x 10.0x 462.2x
PEG (3Y EPS CAGR) -0.03 0.22 0.03

Growth

14 metrics
MetricAIFFPHGQDEL
Revenue growth (1Y) 320.3% 53.4% -32.3%
Revenue CAGR (3Y) -40.3% 15.1% -27.0%
Gross profit growth (1Y) 99.0% 76.3% –
Gross profit CAGR (3Y) -32.6% 4.0% –
Operating income growth (1Y) 19.8% 49.6% –
Operating income CAGR (3Y) -52.0% 337.8% –
Net income growth (1Y) 60.1% 444.3% 68.7%
Net income CAGR (3Y) 15.8% 45.2% -72.2%
EPS growth (1Y) 81.8% 177.7% 69.0%
EPS CAGR (3Y) 69.0% 69.9% -71.3%
Operating cash flow growth (1Y) 19.1% 154.0% -78.6%
Operating cash flow CAGR (3Y) -8.4% 34.9% -76.4%
Free cash flow growth (1Y) 17.6% 74.5% 23.9%
Free cash flow CAGR (3Y) -6.3% 35.7% -30.2%

Profitability

14 metrics
MetricAIFFPHGQDEL
Gross margin 44.6% 53.5% –
EBITDA margin -496.9% 14.1% –
Operating margin -508.1% 9.2% –
Pretax margin -506.2% 8.7% –
Net margin -524.5% 6.3% –
FCF margin -400.2% 17.4% –
Operating cash flow margin -388.6% 11.8% -3.6%
Return on equity -78.8% 13.2% –
Return on assets -65.8% 5.5% –
Return on invested capital – 12.4% –
Return on capital employed -77.9% 12.6% –
Asset turnover 0.1x 1.0x 0.0x
Cash conversion (OCF / net income) 0.8x 2.4x 0.0x
Stock comp / revenue 36.4% 0.5% -20.7%

Financial Health

11 metrics
MetricAIFFPHGQDEL
Debt / assets – 29.0% 50.8%
Debt / equity – 0.7x 1.6x
Net debt / EBITDA – 1.4x –
Debt / FCF – 1.8x -25.1x
Liabilities / assets 12.6% 58.7% 69.0%
Equity / assets 87.4% 41.3% 31.0%
Interest coverage – 6.5x –
Current ratio 4.9x 1.3x 1.4x
Quick ratio 4.5x 0.8x 0.5x
Cash ratio 4.4x 0.4x 0.2x
Altman Z-score -5.36 – –

Shareholder Returns

7 metrics
MetricAIFFPHGQDEL
Dividend yield – 3.2% –
Net buyback yield -2.2% -0.7% -0.5%
Shareholder yield -2.2% 2.5% -0.5%
Payout ratio (earnings) – – –
Payout ratio (FCF) – – –
Dividend growth (1Y) – – –
Dividend CAGR (3Y) – – –

Analyst Estimates

Solid lines are reported fiscal-year results; dashed lines are the consensus for the years ahead. Hover a year for the analysts' high and low, and how each result compared with its estimate.

ConsensusAIFFPHGQDEL
Forward P/E – 15.4xFY2026 17.1xFY2026
EPS, next fiscal year – $1.98FY2026 $0.75FY2026
EPS growth, next FY – +6.5%FY2026 -64.6%FY2026
EPS growth, the year after – -10.6% +101.3%
Revenue, next fiscal year – $21.48BFY2026 $2.67BFY2026
Revenue growth, next FY – +1.1%FY2026 -2.0%FY2026
Revenue growth, the year after – -8.0% +0.2%

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersAIFFPHGQDEL
Held by institutions 7.9% 5.4% 100.0%
Institutions holding 23 365 243
Change in shares held, QoQ +34.3% +0.8% +2.9%
Institutions buying 10 267 143
Institutions selling 6 76 65
Buyers to sellers 1.67 3.51 2.20

Return Correlation

Daily returns, last 12 months

1.00 means two stocks move in lockstep, 0 that they move independently. Pairs below about 0.5 diversify each other.

AIFFPHGQDEL
AIFF 1.00 0.08 0.08
PHG 0.08 1.00 0.26
QDEL 0.08 0.26 1.00

Add a Peer

Largest companies in the same industry

Related Comparisons

Frequently Asked Questions

Which is bigger, AIFF, PHG and QDEL?

Koninklijke Philips (PHG) is the largest by market capitalisation: Firefly Neuroscience (AIFF) $18.93M, Koninklijke Philips (PHG) $29.36B, QuidelOrtho (QDEL) $880.82M.

Which company is growing faster?

Firefly Neuroscience (AIFF) grew revenue fastest over the trailing twelve months: Firefly Neuroscience (AIFF) +320.3%, Koninklijke Philips (PHG) +53.4%, QuidelOrtho (QDEL) -32.3%.

Which company is more profitable?

Koninklijke Philips (PHG) has the highest net margin (Firefly Neuroscience (AIFF) -524.5%, Koninklijke Philips (PHG) 6.3%).

Which stock has performed better?

Over the past year Koninklijke Philips (PHG) returned the most: Firefly Neuroscience (AIFF) -48.0%, Koninklijke Philips (PHG) +8.6%, QuidelOrtho (QDEL) -53.1%. Over five years, Koninklijke Philips (PHG) compounded fastest (Firefly Neuroscience (AIFF) -60.6%/yr, Koninklijke Philips (PHG) -8.6%/yr, QuidelOrtho (QDEL) -36.2%/yr). Returns are price only, before dividends.

Which pays a higher dividend?

Only one of these companies pays a dividend: Koninklijke Philips (PHG) 3.25%. Firefly Neuroscience (AIFF) and QuidelOrtho (QDEL) pays no regular dividend.

Which stock is riskier?

By one-year price volatility, Koninklijke Philips (PHG) has been the steadiest (Firefly Neuroscience (AIFF) 160.0%, Koninklijke Philips (PHG) 29.7%, QuidelOrtho (QDEL) 93.8%). Volatility measures how widely the price swings, not the risk of the business.

Which is the better stock, AIFF, PHG and QDEL?

There is no single answer; it depends on what you are buying for. On the 12 head-to-head measures on this page, Koninklijke Philips (PHG) leads on 7. Business Quant does not give investment advice; use the comparison as a starting point for your own research.

Data from SEC filings, exchange prices and consensus estimates, via Business Quant. Percentile scores compare each company with its own peer group, so two companies' scores are each relative to different peers unless you rank against the whole market. Price returns exclude dividends. Nothing on this page is investment advice.