AIFF vs PHG vs QDEL Stock Comparison

Firefly Neuroscience, Koninklijke Philips and QuidelOrtho Prices as of Oct 27, 2026 Peers: Industry group
PHG Koninklijke Philips Nv
$26.42 +5.8% 1M -8.5% 1Y
Market cap
$25.57B
P/E
13.9x
Revenue (TTM)
$20.60B
Div. yield
–
Diagnostic Equipment Healthcare
7 wins
QDEL QuidelOrtho Corp
$13.59 +24.2% 1M -53.9% 1Y
Market cap
$970.54M
P/E
–
Revenue (TTM)
-$211.90M
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 $20.99M $25.57B $970.54M PHG
Cheaper on earningsLower P/E, profitable companies only -2.2x 13.9x -0.9x –
Cheaper on forward earningsLower price / next fiscal year consensus EPS — 13.3x 18.1x PHG
Faster revenue growthRevenue growth, trailing twelve months +320.3% +6.1% -30.8% AIFF
More profitableNet margin, trailing twelve months -524.5% 8.9% — PHG
Better return on capitalReturn on invested capital — 11.5% — –
Less leveragedLower net debt / EBITDA — 1.8x — –
Higher dividend yieldTrailing dividend yield 0.00% 0.00% 0.00% –
Better 1-year returnPrice return, last 12 months -50.7% -8.5% -53.9% PHG
Better 5-year returnAnnualised price return, 5 years -60.6%/yr -11.1%/yr -36.6%/yr PHG
Less volatileAnnualised volatility, 1 year 159.8% 28.7% 92.9% PHG
Higher overall scoreMean of the five percentile scores vs peers 38/100 80/100 21/100 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 227 98 #6 of 227 46 #124 of 227
Growth 61 #86 of 219 95 #11 of 219 1 #217 of 219
Profitability 15 #176 of 206 95 #11 of 206 –
Financial Health 80 #49 of 238 31 #165 of 238 10 #214 of 238
Shareholder Returns 20 #107 of 134 79 #29 of 134 29 #95 of 134
Overall 38 80 21
  • 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 -50.2%+5.8%+24.2% -0.2%
3 months -9.9%+3.4%-18.5% +3.9%
6 months -52.8%-2.6%+13.1% +8.2%
Year to date +13.6%-2.4%-52.4% +12.9%
1 year -50.7%-8.5%-53.9% +12.3%
3 years -82.6%+42.8%-77.7% +87.4%
3 years, per year -44.2%+12.6%-39.4% +23.3%
5 years -99.0%-44.3%-89.8% +67.9%
5 years, per year -60.6%-11.1%-36.6% +10.9%
10 years -77.8%-11.3%-34.6% +261.1%
10 years, per year -14.0%-1.2%-4.2% +13.7%

Risk

MeasureAIFFPHGQDELSPY
Volatility, 1Y 159.8%28.7%92.9% 12.7%
Downside volatility, 1Y 109.1%28.7%100.5% 12.7%
Beta vs S&P 500, 1Y 1.520.812.60 1.00
Return / volatility, 1Y -0.32-0.30-0.58 0.97
Max drawdown, 5Y -99.6%-75.6%-94.3% -25.4%
From 52-week high -66.9%-19.7%-61.6% -1.2%
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 -2.2xmedian 29.6x 13.6xmedian 29.6x -0.9xmedian 29.6x
P/S now vs peer median 11.4xmedian 2.9x 1.2xmedian 2.9x -4.4xmedian 2.9x
EV/EBITDA now vs peer median -1.3xmedian 17.4x 8.1xmedian 17.4x —median 17.4x
P/FCF now vs peer median -2.9xmedian 22.3x 5.9xmedian 22.3x -4.4xmedian 22.3x
P/B now vs peer median 1.4xmedian 2.3x 1.9xmedian 2.3x 0.5xmedian 2.3x
PEG now vs peer median -0.03median 1.04 0.32median 1.04 0.01median 1.04

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 $20.60B -$211.90M
Gross profit $802.00K $16.03B –
Operating income -$9.14M $2.65B –
Net income -$9.11M $1.39B -$1.05B
Free cash flow -$7.20M $4.34B -$211.20M
R&D $1.78M $2.00B –
EPS (diluted) $-0.70 $1.91 $-15.35
Cash & equivalents $9.23M $2.04B $123.40M
Total debt – $9.51B $2.89B
Shares (diluted) 13.50M 962.50M 68.30M
Enterprise value $1.57M $14.69B $438.84M

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 -2.2x 13.6x -0.9x
P/FCF -2.9x 5.9x -4.4x
P/Operating cash flow -2.9x 9.6x -16.2x
P/S 11.4x 1.2x -4.4x
P/B 1.4x 1.9x 0.5x
P/Tangible book 1.5x 2.5x -1.0x
EV/EBITDA -1.3x 8.1x –
EV/EBIT -1.2x 12.4x –
EV/Revenue 6.3x 1.6x -17.4x
EV/FCF -1.6x 7.6x -17.5x
EV/Operating cash flow -1.6x 12.4x -64.6x
PEG (3Y EPS CAGR) -0.03 0.32 0.01

Growth

14 metrics
MetricAIFFPHGQDEL
Revenue growth (1Y) 320.3% 6.1% -30.8%
Revenue CAGR (3Y) -40.3% 2.3% -27.0%
Gross profit growth (1Y) 99.0% 82.4% –
Gross profit CAGR (3Y) -32.6% 6.7% –
Operating income growth (1Y) 19.8% 121.3% –
Operating income CAGR (3Y) -52.0% 52.0% –
Net income growth (1Y) 60.1% 293.5% -124.8%
Net income CAGR (3Y) 15.8% 35.6% -107.7%
EPS growth (1Y) 81.8% 539.4% -122.8%
EPS CAGR (3Y) 69.0% 42.2% -106.5%
Operating cash flow growth (1Y) 19.1% 116.7% -128.5%
Operating cash flow CAGR (3Y) -8.4% 53.6% -27.1%
Free cash flow growth (1Y) 17.6% 54.2% -1,725%
Free cash flow CAGR (3Y) -6.3% 45.6% -30.1%

Profitability

14 metrics
MetricAIFFPHGQDEL
Gross margin 44.6% 77.8% –
EBITDA margin -496.9% 19.8% –
Operating margin -508.1% 12.9% –
Pretax margin -506.2% 11.9% –
Net margin -524.5% 8.9% –
FCF margin -400.2% 21.1% –
Operating cash flow margin -388.6% 12.9% 27.0%
Return on equity -78.8% 12.7% –
Return on assets -65.8% 5.4% –
Return on invested capital – 11.5% –
Return on capital employed -77.9% 11.8% –
Asset turnover 0.1x 0.7x 0.0x
Cash conversion (OCF / net income) 0.8x 1.9x 0.1x
Stock comp / revenue 36.4% 0.7% -20.9%

Financial Health

11 metrics
MetricAIFFPHGQDEL
Debt / assets – 31.2% 50.6%
Debt / equity – 0.7x 1.6x
Net debt / EBITDA – 1.8x –
Debt / FCF – 2.2x -13.7x
Liabilities / assets 12.6% 57.1% 68.9%
Equity / assets 87.4% 42.9% 31.1%
Interest coverage – 6.2x –
Current ratio 4.9x 1.3x 1.4x
Quick ratio 4.5x 0.7x 0.5x
Cash ratio 4.4x 0.2x 0.1x
Altman Z-score -4.89 – –

Shareholder Returns

7 metrics
MetricAIFFPHGQDEL
Dividend yield – 3.7% –
Net buyback yield -2.0% -0.5% -0.6%
Shareholder yield -2.0% 3.3% -0.6%
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 – 13.3xFY2026 18.1xFY2026
EPS, next fiscal year – $1.98FY2026 $0.75FY2026
EPS growth, next FY – +6.5%FY2026 -64.6%FY2026
EPS growth, the year after – -10.1% +101.3%
Revenue, next fiscal year – $21.63BFY2026 $2.67BFY2026
Revenue growth, next FY – +1.8%FY2026 -2.0%FY2026
Revenue growth, the year after – -8.2% +0.2%

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersAIFFPHGQDEL
Held by institutions 7.9% 5.4% 100.0%
Institutions holding 23 363 243
Change in shares held, QoQ +34.3% +0.8% +2.9%
Institutions buying 10 266 143
Institutions selling 6 76 65
Buyers to sellers 1.67 3.50 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 0.06 0.08
PHG 0.06 1.00 0.24
QDEL 0.08 0.24 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) $20.99M, Koninklijke Philips (PHG) $25.57B, QuidelOrtho (QDEL) $970.54M.

Which company is growing faster?

Firefly Neuroscience (AIFF) grew revenue fastest over the trailing twelve months: Firefly Neuroscience (AIFF) +320.3%, Koninklijke Philips (PHG) +6.1%, QuidelOrtho (QDEL) -30.8%.

Which company is more profitable?

Koninklijke Philips (PHG) has the highest net margin (Firefly Neuroscience (AIFF) -524.5%, Koninklijke Philips (PHG) 8.9%).

Which stock has performed better?

Over the past year Koninklijke Philips (PHG) returned the most: Firefly Neuroscience (AIFF) -50.7%, Koninklijke Philips (PHG) -8.5%, QuidelOrtho (QDEL) -53.9%. Over five years, Koninklijke Philips (PHG) compounded fastest (Firefly Neuroscience (AIFF) -60.6%/yr, Koninklijke Philips (PHG) -11.1%/yr, QuidelOrtho (QDEL) -36.6%/yr). Returns are price only, before dividends.

Which stock is riskier?

By one-year price volatility, Koninklijke Philips (PHG) has been the steadiest (Firefly Neuroscience (AIFF) 159.8%, Koninklijke Philips (PHG) 28.7%, QuidelOrtho (QDEL) 92.9%). 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.