AIFF vs NEOG vs VREX Stock Comparison

Firefly Neuroscience, Neogen and Varex Imaging Prices as of Oct 29, 2026 Peers: Industry group
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NEOG Neogen Corp
$12.26 -3.7% 1M +96.8% 1Y
Market cap
$2.56B
P/E
–
Revenue (TTM)
$883.99M
Div. yield
–
Diagnostic Equipment Healthcare
4 wins
VREX Varex Imaging Corp
$18.44 -0.2% 1M +53.4% 1Y
Market cap
$775.90M
P/E
35.1x
Revenue (TTM)
$865.00M
Div. yield
–
Diagnostic Equipment Healthcare
5 wins

Head to Head

10 decided of 12

Varex Imaging leads on 5 of the 12 questions below (Varex Imaging 5, Neogen 4, Firefly Neuroscience 1). Which ones matter depends on what you are buying for; a cheap multiple and slow growth often come together.

QuestionAIFFNEOGVREXLeader
Larger companyMarket capitalisation $20.78M $2.56B $775.90M NEOG
Cheaper on earningsLower P/E, profitable companies only -2.2x -45.6x 35.1x –
Cheaper on forward earningsLower price / next fiscal year consensus EPS — 38.3x 21.2x VREX
Faster revenue growthRevenue growth, trailing twelve months +320.3% -0.3% +5.3% AIFF
More profitableNet margin, trailing twelve months -524.5% -6.3% 2.6% VREX
Better return on capitalReturn on invested capital — -0.2% 6.9% VREX
Less leveragedLower net debt / EBITDA — 5.4x 2.5x VREX
Higher dividend yieldTrailing dividend yield 0.00% 0.00% 0.00% –
Better 1-year returnPrice return, last 12 months -46.4% +96.8% +53.4% NEOG
Better 5-year returnAnnualised price return, 5 years -60.3%/yr -22.0%/yr -7.2%/yr VREX
Less volatileAnnualised volatility, 1 year 159.8% 55.7% 57.2% NEOG
Higher overall scoreMean of the five percentile scores vs peers 38/100 57/100 51/100 NEOG

Percentile Scorecard

AIFFNEOGVREX

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

AxisAIFFNEOGVREX
Valuation 15 #194 of 227 73 #62 of 227 85 #34 of 227
Growth 60 #87 of 218 49 #111 of 218 24 #166 of 218
Profitability 15 #172 of 202 63 #76 of 202 67 #67 of 202
Financial Health 80 #48 of 233 47 #125 of 233 43 #133 of 233
Shareholder Returns 21 #103 of 130 55 #59 of 130 35 #85 of 130
Overall 38 57 51
  • AIFF ranked among 247 companies in Medical Devices and Diagnostics
  • NEOG ranked among 247 companies in Medical Devices and Diagnostics
  • VREX 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

PeriodAIFFNEOGVREXSPY
1 month -36.4%-3.7%-0.2% +0.7%
3 months +2.0%+6.3%+66.6% +3.7%
6 months -54.0%+30.4%+58.3% +7.1%
Year to date +17.0%+75.4%+58.3% +12.8%
1 year -46.4%+96.8%+53.4% +11.9%
3 years -81.5%-18.6%+3.0% +85.2%
3 years, per year -43.1%-6.6%+1.0% +22.8%
5 years -99.0%-71.0%-31.3% +67.6%
5 years, per year -60.3%-22.0%-7.2% +10.9%
10 years -77.1%-37.3%— +262.0%
10 years, per year -13.7%-4.6%— +13.7%

Risk

MeasureAIFFNEOGVREXSPY
Volatility, 1Y 159.8%55.7%57.2% 12.7%
Downside volatility, 1Y 108.9%46.7%49.5% 12.6%
Beta vs S&P 500, 1Y 1.541.441.10 1.00
Return / volatility, 1Y -0.291.740.93 0.94
Max drawdown, 5Y -99.6%-90.6%-78.8% -25.4%
From 52-week high -65.9%-12.3%-0.8% -1.2%
52-week high $3.02$13.98$18.58 $779.14
52-week low $0.64$5.41$9.32 $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.

MultipleAIFFNEOGVREX
P/E now vs peer median -2.2xmedian 28.7x -47.7xmedian 28.7x 35.1xmedian 28.7x
P/S now vs peer median 11.8xmedian 3.0x 3.0xmedian 3.0x 0.9xmedian 3.0x
EV/EBITDA now vs peer median -1.3xmedian 17.8x 29.6xmedian 17.8x 10.1xmedian 17.8x
P/FCF now vs peer median -2.9xmedian 26.4x 53.7xmedian 26.4x -38.5xmedian 26.4x
P/B now vs peer median 1.4xmedian 2.4x 1.3xmedian 2.4x 1.5xmedian 2.4x
PEG now vs peer median -0.03median 0.99 1.70median 0.99 -9.16median 0.99

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 monthsAIFFNEOGVREX
Revenue $1.80M $883.99M $865.00M
Gross profit $802.00K $418.98M $296.90M
Operating income -$9.14M -$7.38M $72.20M
Net income -$9.11M -$56.10M $22.40M
Free cash flow -$7.20M $49.80M -$20.20M
R&D $1.78M $19.76M $91.40M
EPS (diluted) $-0.70 $-0.26 $0.52
Cash & equivalents $9.23M $172.00M $99.20M
Total debt – $774.20M $347.10M
Shares (diluted) 13.50M 218.10M 42.60M
Enterprise value $1.36M $1.89B $307.70M

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
MetricAIFFNEOGVREX
P/E -2.2x -47.7x 35.1x
P/FCF -2.9x 53.7x -38.5x
P/Operating cash flow -3.0x 31.4x 68.8x
P/S 11.8x 3.0x 0.9x
P/B 1.4x 1.3x 1.5x
P/Tangible book 1.5x 3.4x 1.6x
EV/EBITDA -1.3x 29.6x 10.1x
EV/EBIT -1.3x -444.4x 14.2x
EV/Revenue 6.7x 3.7x 1.2x
EV/FCF -1.7x 65.8x -50.7x
EV/Operating cash flow -1.7x 38.4x 90.7x
PEG (3Y EPS CAGR) -0.03 1.70 -9.16

Growth

14 metrics
MetricAIFFNEOGVREX
Revenue growth (1Y) 320.3% -0.3% 5.3%
Revenue CAGR (3Y) -40.3% -1.3% -1.2%
Gross profit growth (1Y) 99.0% 1.8% 6.1%
Gross profit CAGR (3Y) -32.6% -3.1% 1.2%
Operating income growth (1Y) 19.8% 99.3% 297.8%
Operating income CAGR (3Y) -52.0% -29.0% -2.3%
Net income growth (1Y) 60.1% 94.6% 116.7%
Net income CAGR (3Y) 15.8% -28.3% -9.2%
EPS growth (1Y) 81.8% 94.6% 116.1%
EPS CAGR (3Y) 69.0% -28.0% -3.8%
Operating cash flow growth (1Y) 19.1% -1.9% -81.1%
Operating cash flow CAGR (3Y) -8.4% 2.9% -47.6%
Free cash flow growth (1Y) 17.6% 1,631% -155.5%
Free cash flow CAGR (3Y) -6.3% 126.1% -33.5%

Profitability

14 metrics
MetricAIFFNEOGVREX
Gross margin 44.6% 47.4% 34.3%
EBITDA margin -496.9% 12.5% 11.7%
Operating margin -508.1% -0.8% 8.3%
Pretax margin -506.2% -7.7% 3.2%
Net margin -524.5% -6.3% 2.6%
FCF margin -400.2% 5.6% -2.3%
Operating cash flow margin -388.6% 9.6% 1.3%
Return on equity -78.8% -2.7% 4.5%
Return on assets -65.8% -1.7% 2.1%
Return on invested capital – -0.2% 6.9%
Return on capital employed -77.9% -0.2% 8.0%
Asset turnover 0.1x 0.3x 0.8x
Cash conversion (OCF / net income) 0.8x -1.5x 0.5x
Stock comp / revenue 36.4% 1.3% 1.7%

Financial Health

11 metrics
MetricAIFFNEOGVREX
Debt / assets – 23.4% 31.6%
Debt / equity – 0.4x 0.7x
Net debt / EBITDA – 5.4x 2.5x
Debt / FCF – 15.5x -17.2x
Liabilities / assets 12.6% 36.8% 53.6%
Equity / assets 87.4% 63.2% 46.4%
Interest coverage – – 1.9x
Current ratio 4.9x 3.9x 3.4x
Quick ratio 4.5x 2.1x 1.3x
Cash ratio 4.4x 1.2x 0.5x
Altman Z-score -4.72 1.50 2.29

Shareholder Returns

7 metrics
MetricAIFFNEOGVREX
Dividend yield – – –
Net buyback yield -1.9% -0.1% -0.4%
Shareholder yield -1.9% -0.1% -0.4%
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.

ConsensusAIFFNEOGVREX
Forward P/E – 38.3xFY2026 21.2xFY2026
EPS, next fiscal year – $0.32FY2026 $0.87FY2026
EPS growth, next FY – 0.0%FY2026 -3.3%FY2026
EPS growth, the year after – +31.3% +14.9%
Revenue, next fiscal year – $847.28MFY2026 $829.68MFY2026
Revenue growth, next FY – -2.7%FY2026 -1.8%FY2026
Revenue growth, the year after – -1.5% +2.3%

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersAIFFNEOGVREX
Held by institutions 7.9% 100.0% 95.2%
Institutions holding 23 315 187
Change in shares held, QoQ +34.3% +1.6% -2.7%
Institutions buying 10 151 99
Institutions selling 6 106 58
Buyers to sellers 1.67 1.42 1.71

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.

AIFFNEOGVREX
AIFF 1.00 0.07 0.07
NEOG 0.07 1.00 0.25
VREX 0.07 0.25 1.00

Add a Peer

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Frequently Asked Questions

Which is bigger, AIFF, NEOG and VREX?

Neogen (NEOG) is the largest by market capitalisation: Firefly Neuroscience (AIFF) $20.78M, Neogen (NEOG) $2.56B, Varex Imaging (VREX) $775.90M.

Which company is growing faster?

Firefly Neuroscience (AIFF) grew revenue fastest over the trailing twelve months: Firefly Neuroscience (AIFF) +320.3%, Neogen (NEOG) -0.3%, Varex Imaging (VREX) +5.3%.

Which company is more profitable?

Varex Imaging (VREX) has the highest net margin (Firefly Neuroscience (AIFF) -524.5%, Neogen (NEOG) -6.3%, Varex Imaging (VREX) 2.6%). On return on invested capital, Varex Imaging (VREX) leads (Neogen (NEOG) -0.2%, Varex Imaging (VREX) 6.9%).

Which stock has performed better?

Over the past year Neogen (NEOG) returned the most: Firefly Neuroscience (AIFF) -46.4%, Neogen (NEOG) +96.8%, Varex Imaging (VREX) +53.4%. Over five years, Varex Imaging (VREX) compounded fastest (Firefly Neuroscience (AIFF) -60.3%/yr, Neogen (NEOG) -22.0%/yr, Varex Imaging (VREX) -7.2%/yr). Returns are price only, before dividends.

Which stock is riskier?

By one-year price volatility, Neogen (NEOG) has been the steadiest (Firefly Neuroscience (AIFF) 159.8%, Neogen (NEOG) 55.7%, Varex Imaging (VREX) 57.2%). Volatility measures how widely the price swings, not the risk of the business.

Which is the better stock, AIFF, NEOG and VREX?

There is no single answer; it depends on what you are buying for. On the 12 head-to-head measures on this page, Varex Imaging (VREX) leads on 5. 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.