AIFF vs LNTH vs QDEL Stock Comparison

Firefly Neuroscience, Lantheus Holdings and QuidelOrtho Prices as of Oct 26, 2026 Peers: Industry group
LNTH Lantheus Holdings, Inc.
$99.92 +0.2% 1M +78.2% 1Y
Market cap
$6.52B
P/E
23.7x
Revenue (TTM)
$1.56B
Div. yield
–
Diagnostic Equipment Healthcare
7 wins
QDEL QuidelOrtho Corp
$13.77 +25.9% 1M -54.9% 1Y
Market cap
$925.81M
P/E
–
Revenue (TTM)
-$211.90M
Div. yield
–
Diagnostic Equipment Healthcare

Head to Head

8 decided of 12

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

QuestionAIFFLNTHQDELLeader
Larger companyMarket capitalisation $20.57M $6.52B $925.81M LNTH
Cheaper on earningsLower P/E, profitable companies only -2.2x 23.7x -0.9x –
Cheaper on forward earningsLower price / next fiscal year consensus EPS — 17.3x 18.4x LNTH
Faster revenue growthRevenue growth, trailing twelve months +320.3% +2.3% -30.8% AIFF
More profitableNet margin, trailing twelve months -524.5% 17.7% — LNTH
Better return on capitalReturn on invested capital — 12.5% — –
Less leveragedLower net debt / EBITDA — -0.1x — –
Higher dividend yieldTrailing dividend yield 0.00% 0.00% 0.00% –
Better 1-year returnPrice return, last 12 months -54.8% +78.2% -54.9% LNTH
Better 5-year returnAnnualised price return, 5 years -61.1%/yr +34.7%/yr -36.4%/yr LNTH
Less volatileAnnualised volatility, 1 year 160.0% 32.4% 93.1% LNTH
Higher overall scoreMean of the five percentile scores vs peers 38/100 80/100 22/100 LNTH

Percentile Scorecard

AIFFLNTHQDEL

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

AxisAIFFLNTHQDEL
Valuation 15 #194 of 228 81 #45 of 228 45 #126 of 228
Growth 61 #87 of 221 63 #83 of 221 1 #219 of 221
Profitability 14 #179 of 208 94 #13 of 208 –
Financial Health 79 #52 of 239 69 #74 of 239 10 #215 of 239
Shareholder Returns 20 #110 of 137 93 #11 of 137 30 #96 of 137
Overall 38 80 22
  • AIFF ranked among 248 companies in Medical Devices and Diagnostics
  • LNTH ranked among 248 companies in Medical Devices and Diagnostics
  • QDEL ranked among 248 companies in Medical Devices and Diagnostics

Price Performance

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

Returns

PeriodAIFFLNTHQDELSPY
1 month -53.2%+0.2%+25.9% -0.8%
3 months -20.3%-7.5%-18.2% +3.5%
6 months -55.7%+18.8%+12.0% +7.0%
Year to date +6.8%+50.1%-51.8% +12.2%
1 year -54.8%+78.2%-54.9% +13.0%
3 years -83.7%+49.5%-77.4% +86.3%
3 years, per year -45.4%+14.4%-39.1% +23.1%
5 years -99.1%+343.3%-89.6% +68.6%
5 years, per year -61.1%+34.7%-36.4% +11.0%
10 years -79.1%+1,048.5%-35.7% +258.0%
10 years, per year -14.5%+27.7%-4.3% +13.6%

Risk

MeasureAIFFLNTHQDELSPY
Volatility, 1Y 160.0%32.4%93.1% 12.7%
Downside volatility, 1Y 109.1%27.5%100.9% 12.7%
Beta vs S&P 500, 1Y 1.500.592.61 1.00
Return / volatility, 1Y -0.342.42-0.59 1.02
Max drawdown, 5Y -99.6%-59.5%-94.3% -25.4%
From 52-week high -68.9%-9.9%-61.1% -1.8%
52-week high $3.02$110.94$35.38 $779.14
52-week low $0.64$50.69$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.

MultipleAIFFLNTHQDEL
P/E now vs peer median -2.0xmedian 30.6x 23.6xmedian 30.6x -0.9xmedian 30.6x
P/S now vs peer median 10.8xmedian 3.0x 4.2xmedian 3.0x -4.4xmedian 3.0x
EV/EBITDA now vs peer median -1.1xmedian 17.5x 16.4xmedian 17.5x —median 17.5x
P/FCF now vs peer median -2.7xmedian 23.3x 16.8xmedian 23.3x -4.5xmedian 23.3x
P/B now vs peer median 1.3xmedian 2.4x 5.0xmedian 2.4x 0.5xmedian 2.4x
PEG now vs peer median -0.03median 0.87 0.22median 0.87 0.01median 0.87

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 monthsAIFFLNTHQDEL
Revenue $1.80M $1.56B -$211.90M
Gross profit $802.00K $936.02M –
Operating income -$9.14M $302.34M –
Net income -$9.11M $275.31M -$1.05B
Free cash flow -$7.20M $387.83M -$211.20M
R&D $1.78M $173.09M –
EPS (diluted) $-0.70 $4.08 $-15.35
Cash & equivalents $9.23M $593.30M $123.40M
Total debt – $571.05M $2.89B
Shares (diluted) 13.50M 67.52M 68.30M
Enterprise value $1.15M $4.69B $394.11M

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
MetricAIFFLNTHQDEL
P/E -2.0x 23.6x -0.9x
P/FCF -2.7x 16.8x -4.5x
P/Operating cash flow -2.8x 15.8x -16.4x
P/S 10.8x 4.2x -4.4x
P/B 1.3x 5.0x 0.5x
P/Tangible book 1.4x 10.5x -1.0x
EV/EBITDA -1.1x 16.4x –
EV/EBIT -1.1x 21.5x –
EV/Revenue 5.6x 4.2x -17.5x
EV/FCF -1.4x 16.8x -17.6x
EV/Operating cash flow -1.4x 15.7x -64.8x
PEG (3Y EPS CAGR) -0.03 0.22 0.01

Growth

14 metrics
MetricAIFFLNTHQDEL
Revenue growth (1Y) 320.3% 2.3% -30.8%
Revenue CAGR (3Y) -40.3% 11.4% -27.0%
Gross profit growth (1Y) 99.0% -3.4% –
Gross profit CAGR (3Y) -32.6% 16.3% –
Operating income growth (1Y) 19.8% -30.9% –
Operating income CAGR (3Y) -52.0% 118.8% –
Net income growth (1Y) 60.1% 1.6% -124.8%
Net income CAGR (3Y) 15.8% 102.1% -107.7%
EPS growth (1Y) 81.8% 5.8% -122.8%
EPS CAGR (3Y) 69.0% 105.5% -106.5%
Operating cash flow growth (1Y) 19.1% -21.7% -128.5%
Operating cash flow CAGR (3Y) -8.4% 14.5% -27.1%
Free cash flow growth (1Y) 17.6% -10.1% -1,725%
Free cash flow CAGR (3Y) -6.3% 103.0% -30.1%

Profitability

14 metrics
MetricAIFFLNTHQDEL
Gross margin 44.6% 60.1% –
EBITDA margin -496.9% 25.4% –
Operating margin -508.1% 19.4% –
Pretax margin -506.2% 23.3% –
Net margin -524.5% 17.7% –
FCF margin -400.2% 24.9% –
Operating cash flow margin -388.6% 26.5% 27.0%
Return on equity -78.8% 21.8% –
Return on assets -65.8% 11.6% –
Return on invested capital – 12.5% –
Return on capital employed -77.9% 14.8% –
Asset turnover 0.1x 0.7x 0.0x
Cash conversion (OCF / net income) 0.8x 1.5x 0.1x
Stock comp / revenue 36.4% 5.0% -20.9%

Financial Health

11 metrics
MetricAIFFLNTHQDEL
Debt / assets – 23.6% 50.6%
Debt / equity – 0.4x 1.6x
Net debt / EBITDA – -0.1x –
Debt / FCF – 1.5x -13.7x
Liabilities / assets 12.6% 45.7% 68.9%
Equity / assets 87.4% 54.3% 31.1%
Interest coverage – 15.3x –
Current ratio 4.9x 3.1x 1.4x
Quick ratio 4.5x 2.8x 0.5x
Cash ratio 4.4x 1.8x 0.1x
Altman Z-score -5.24 5.46 –

Shareholder Returns

7 metrics
MetricAIFFLNTHQDEL
Dividend yield – – –
Net buyback yield -2.1% 2.9% -0.6%
Shareholder yield -2.1% 2.9% -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.

ConsensusAIFFLNTHQDEL
Forward P/E – 17.3xFY2026 18.4xFY2026
EPS, next fiscal year – $5.76FY2026 $0.75FY2026
EPS growth, next FY – -5.3%FY2026 -64.6%FY2026
EPS growth, the year after – +4.2% +101.3%
Revenue, next fiscal year – $1.57BFY2026 $2.67BFY2026
Revenue growth, next FY – +1.8%FY2026 -2.0%FY2026
Revenue growth, the year after – +12.7% +0.2%

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersAIFFLNTHQDEL
Held by institutions 7.9% 100.0% 100.0%
Institutions holding 23 465 243
Change in shares held, QoQ +34.3% +3.4% +2.9%
Institutions buying 10 248 143
Institutions selling 6 142 65
Buyers to sellers 1.67 1.75 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.

AIFFLNTHQDEL
AIFF 1.00 0.04 0.08
LNTH 0.04 1.00 0.22
QDEL 0.08 0.22 1.00

Add a Peer

Largest companies in the same industry

Related Comparisons

Frequently Asked Questions

Which is bigger, AIFF, LNTH and QDEL?

Lantheus Holdings (LNTH) is the largest by market capitalisation: Firefly Neuroscience (AIFF) $20.57M, Lantheus Holdings (LNTH) $6.52B, QuidelOrtho (QDEL) $925.81M.

Which company is growing faster?

Firefly Neuroscience (AIFF) grew revenue fastest over the trailing twelve months: Firefly Neuroscience (AIFF) +320.3%, Lantheus Holdings (LNTH) +2.3%, QuidelOrtho (QDEL) -30.8%.

Which company is more profitable?

Lantheus Holdings (LNTH) has the highest net margin (Firefly Neuroscience (AIFF) -524.5%, Lantheus Holdings (LNTH) 17.7%).

Which stock has performed better?

Over the past year Lantheus Holdings (LNTH) returned the most: Firefly Neuroscience (AIFF) -54.8%, Lantheus Holdings (LNTH) +78.2%, QuidelOrtho (QDEL) -54.9%. Over five years, Lantheus Holdings (LNTH) compounded fastest (Firefly Neuroscience (AIFF) -61.1%/yr, Lantheus Holdings (LNTH) +34.7%/yr, QuidelOrtho (QDEL) -36.4%/yr). Returns are price only, before dividends.

Which stock is riskier?

By one-year price volatility, Lantheus Holdings (LNTH) has been the steadiest (Firefly Neuroscience (AIFF) 160.0%, Lantheus Holdings (LNTH) 32.4%, QuidelOrtho (QDEL) 93.1%). Volatility measures how widely the price swings, not the risk of the business.

Which is the better stock, AIFF, LNTH 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, Lantheus Holdings (LNTH) 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.