BIO vs CTKB vs ILMN Stock Comparison

Bio-Rad Laboratories, Cytek Biosciences and Illumina Prices as of Oct 27, 2026 Peers: Industry group
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CTKB Cytek Biosciences, Inc.
$5.98 +5.8% 1M +44.1% 1Y
Market cap
$783.88M
P/E
–
Revenue (TTM)
$206.71M
Div. yield
–
Life Sciences Tools Healthcare
1 win
ILMN Illumina, Inc.
$279.47 +3.5% 1M +178.5% 1Y
Market cap
$43.70B
P/E
53.0x
Revenue (TTM)
$4.49B
Div. yield
–
Life Sciences Tools Healthcare
6 wins

Head to Head

10 decided of 12

Illumina leads on 6 of the 12 questions below (Illumina 6, Bio-Rad Laboratories 3, Cytek Biosciences 1). Which ones matter depends on what you are buying for; a cheap multiple and slow growth often come together.

QuestionBIOCTKBILMNLeader
Larger companyMarket capitalisation $10.23B $783.88M $43.70B ILMN
Cheaper on earningsLower P/E, profitable companies only 46.0x -9.7x 53.0x BIO
Cheaper on forward earningsLower price / next fiscal year consensus EPS 38.3x — 56.0x BIO
Faster revenue growthRevenue growth, trailing twelve months +1.4% +5.4% +4.9% CTKB
More profitableNet margin, trailing twelve months 8.6% -39.0% 18.4% ILMN
Better return on capitalReturn on invested capital 0.4% — 15.1% ILMN
Less leveragedLower net debt / EBITDA — — 0.7x –
Higher dividend yieldTrailing dividend yield 0.00% 0.00% 0.00% –
Better 1-year returnPrice return, last 12 months +13.3% +44.1% +178.5% ILMN
Better 5-year returnAnnualised price return, 5 years -13.6%/yr -23.4%/yr -7.0%/yr ILMN
Less volatileAnnualised volatility, 1 year 37.0% 55.8% 50.4% BIO
Higher overall scoreMean of the five percentile scores vs peers 63/100 41/100 66/100 ILMN

Percentile Scorecard

BIOCTKBILMN

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

AxisBIOCTKBILMN
Valuation 78 #51 of 227 54 #104 of 227 51 #111 of 227
Growth 20 #176 of 219 3 #212 of 219 45 #120 of 219
Profitability 71 #61 of 206 45 #114 of 206 97 #8 of 206
Financial Health 68 #77 of 238 53 #112 of 238 51 #117 of 238
Shareholder Returns 80 #28 of 134 47 #71 of 134 84 #23 of 134
Overall 63 41 66
  • BIO ranked among 247 companies in Medical Devices and Diagnostics
  • CTKB ranked among 247 companies in Medical Devices and Diagnostics
  • ILMN 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

PeriodBIOCTKBILMNSPY
1 month +0.0%+5.8%+3.5% -0.2%
3 months +15.2%+34.1%+44.8% +3.9%
6 months +36.4%+30.9%+120.2% +8.2%
Year to date +25.7%+18.4%+113.1% +12.9%
1 year +13.3%+44.1%+178.5% +12.3%
3 years +40.7%+38.1%+163.0% +87.4%
3 years, per year +12.1%+11.4%+38.1% +23.3%
5 years -51.7%-73.7%-30.5% +67.9%
5 years, per year -13.6%-23.4%-7.0% +10.9%
10 years +141.8%—+106.3% +261.1%
10 years, per year +9.2%—+7.5% +13.7%

Risk

MeasureBIOCTKBILMNSPY
Volatility, 1Y 37.0%55.8%50.4% 12.7%
Downside volatility, 1Y 35.8%55.0%39.1% 12.7%
Beta vs S&P 500, 1Y 0.760.870.82 1.00
Return / volatility, 1Y 0.360.793.54 0.97
Max drawdown, 5Y -72.7%-90.3%-82.9% -25.4%
From 52-week high -2.4%-1.8%-4.8% -1.2%
52-week high $390.34$6.09$293.69 $779.14
52-week low $241.71$3.36$95.03 $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.

MultipleBIOCTKBILMN
P/E now vs peer median 45.8xmedian 29.6x -9.6xmedian 29.6x 51.2xmedian 29.6x
P/S now vs peer median 3.9xmedian 2.9x 3.8xmedian 2.9x 9.4xmedian 2.9x
EV/EBITDA now vs peer median —median 17.4x -19.0xmedian 17.4x 37.3xmedian 17.4x
P/FCF now vs peer median 28.8xmedian 22.3x -64.3xmedian 22.3x 45.3xmedian 22.3x
P/B now vs peer median 1.4xmedian 2.3x 2.4xmedian 2.3x 14.9xmedian 2.3x
PEG now vs peer median 1.24median 1.04 0.07median 1.04 1.70median 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 monthsBIOCTKBILMN
Revenue $2.59B $206.71M $4.49B
Gross profit $1.34B $110.03M $2.98B
Operating income $53.10M -$44.65M $882.00M
Net income $222.40M -$80.58M $825.00M
Free cash flow $353.10M -$12.08M $931.00M
R&D $265.70M $37.26M $960.00M
EPS (diluted) $8.29 $-0.62 $5.39
Cash & equivalents $517.00M $73.85M $1.04B
Total debt $1.20B – $1.99B
Shares (diluted) 26.81M 129.46M 153.00M
Enterprise value $4.09B $460.16M $38.47B

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
MetricBIOCTKBILMN
P/E 45.8x -9.6x 51.2x
P/FCF 28.8x -64.3x 45.3x
P/Operating cash flow 20.7x -128.7x 38.5x
P/S 3.9x 3.8x 9.4x
P/B 1.4x 2.4x 14.9x
P/Tangible book 1.5x 2.5x 17.4x
EV/EBITDA – -19.0x 37.3x
EV/EBIT 184.0x -15.8x 48.8x
EV/Revenue 3.8x 3.4x 9.6x
EV/FCF 27.7x -58.2x 46.2x
EV/Operating cash flow 19.8x -116.5x 39.3x
PEG (3Y EPS CAGR) 1.24 0.07 1.70

Growth

14 metrics
MetricBIOCTKBILMN
Revenue growth (1Y) 1.4% 5.4% 4.9%
Revenue CAGR (3Y) -2.2% 5.6% -1.0%
Gross profit growth (1Y) -0.4% 3.1% 4.6%
Gross profit CAGR (3Y) -3.5% 1.4% 2.9%
Operating income growth (1Y) -76.3% -66.2% -31.8%
Operating income CAGR (3Y) -47.4% -31.0% 28.3%
Net income growth (1Y) -30.3% -1,159% -34.4%
Net income CAGR (3Y) 36.1% -139.7% 30.0%
EPS growth (1Y) -29.3% -1,134% -32.7%
EPS CAGR (3Y) 36.9% -141.6% 30.1%
Operating cash flow growth (1Y) -7.8% -139.7% -5.1%
Operating cash flow CAGR (3Y) 19.8% -66.7% 38.1%
Free cash flow growth (1Y) -4.8% -211.1% -9.7%
Free cash flow CAGR (3Y) 31.9% -3.9% 105.0%

Profitability

14 metrics
MetricBIOCTKBILMN
Gross margin 51.9% 53.2% 66.4%
EBITDA margin – -17.9% 25.7%
Operating margin 2.1% -21.6% 19.6%
Pretax margin 13.5% -19.7% 22.6%
Net margin 8.6% -39.0% 18.4%
FCF margin 13.6% -5.8% 20.7%
Operating cash flow margin 19.0% -2.9% 24.4%
Return on equity 3.2% -24.8% 29.9%
Return on assets 2.2% -18.0% 12.5%
Return on invested capital 0.4% – 15.1%
Return on capital employed 0.6% -12.3% 17.5%
Asset turnover 0.3x 0.5x 0.7x
Cash conversion (OCF / net income) 2.2x 0.1x 1.3x
Stock comp / revenue – 10.3% 5.9%

Financial Health

11 metrics
MetricBIOCTKBILMN
Debt / assets 11.7% – 29.9%
Debt / equity 0.2x – 0.7x
Net debt / EBITDA – – 0.7x
Debt / FCF 3.4x – 2.1x
Liabilities / assets 30.0% 28.0% 57.3%
Equity / assets 70.0% 72.0% 42.7%
Interest coverage 1.1x -143.1x 8.9x
Current ratio 3.1x 4.5x 1.8x
Quick ratio 2.1x 1.5x 1.2x
Cash ratio 1.7x 0.9x 0.7x
Altman Z-score 3.59 4.24 7.97

Shareholder Returns

7 metrics
MetricBIOCTKBILMN
Dividend yield – – –
Net buyback yield 1.2% -0.2% 1.2%
Shareholder yield 1.2% -0.2% 1.2%
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.

ConsensusBIOCTKBILMN
Forward P/E 38.3xFY2026 – 56.0xFY2026
EPS, next fiscal year $9.95FY2026 $-0.32FY2026 $4.99FY2026
EPS growth, next FY +0.3%FY2026 – +3.1%FY2026
EPS growth, the year after -0.2% – +25.7%
Revenue, next fiscal year $2.69BFY2026 $197.36MFY2026 $4.52BFY2026
Revenue growth, next FY +4.2%FY2026 -2.1%FY2026 +4.1%FY2026
Revenue growth, the year after -6.3% +9.9% +12.0%

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersBIOCTKBILMN
Held by institutions 89.5% 62.8% 100.0%
Institutions holding 403 156 933
Change in shares held, QoQ -2.9% -4.1% +0.0%
Institutions buying 177 75 463
Institutions selling 155 64 330
Buyers to sellers 1.14 1.17 1.40

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.

BIOCTKBILMN
BIO 1.00 0.35 0.33
CTKB 0.35 1.00 0.33
ILMN 0.33 0.33 1.00

Add a Peer

Largest companies in the same industry

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Frequently Asked Questions

Which is bigger, BIO, CTKB and ILMN?

Illumina (ILMN) is the largest by market capitalisation: Bio-Rad Laboratories (BIO) $10.23B, Cytek Biosciences (CTKB) $783.88M, Illumina (ILMN) $43.70B.

Which stock is cheaper, BIO, CTKB and ILMN?

Bio-Rad Laboratories (BIO) trades on the lowest price-to-earnings ratio (Bio-Rad Laboratories (BIO) 46.0x, Cytek Biosciences (CTKB) -9.7x, Illumina (ILMN) 53.0x). On next year's consensus earnings, Bio-Rad Laboratories (BIO) is cheapest (Bio-Rad Laboratories (BIO) 38.3x, Illumina (ILMN) 56.0x). A lower multiple can reflect slower expected growth, so read it next to the growth figures.

Which company is growing faster?

Cytek Biosciences (CTKB) grew revenue fastest over the trailing twelve months: Bio-Rad Laboratories (BIO) +1.4%, Cytek Biosciences (CTKB) +5.4%, Illumina (ILMN) +4.9%.

Which company is more profitable?

Illumina (ILMN) has the highest net margin (Bio-Rad Laboratories (BIO) 8.6%, Cytek Biosciences (CTKB) -39.0%, Illumina (ILMN) 18.4%). On return on invested capital, Illumina (ILMN) leads (Bio-Rad Laboratories (BIO) 0.4%, Illumina (ILMN) 15.1%).

Which stock has performed better?

Over the past year Illumina (ILMN) returned the most: Bio-Rad Laboratories (BIO) +13.3%, Cytek Biosciences (CTKB) +44.1%, Illumina (ILMN) +178.5%. Over five years, Illumina (ILMN) compounded fastest (Bio-Rad Laboratories (BIO) -13.6%/yr, Cytek Biosciences (CTKB) -23.4%/yr, Illumina (ILMN) -7.0%/yr). Returns are price only, before dividends.

Which stock is riskier?

By one-year price volatility, Bio-Rad Laboratories (BIO) has been the steadiest (Bio-Rad Laboratories (BIO) 37.0%, Cytek Biosciences (CTKB) 55.8%, Illumina (ILMN) 50.4%). Volatility measures how widely the price swings, not the risk of the business.

Which is the better stock, BIO, CTKB and ILMN?

There is no single answer; it depends on what you are buying for. On the 12 head-to-head measures on this page, Illumina (ILMN) leads on 6. 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.