CAI vs CSTL vs BLLN Stock Comparison

Caris Life Sciences, Castle Biosciences and BillionToOne Prices as of Oct 27, 2026 Peers: Industry group
CSTL Castle Biosciences Inc
$34.51 -3.6% 1M +44.0% 1Y
Market cap
$1.12B
P/E
–
Revenue (TTM)
$357.28M
Div. yield
–
Diagnostic Labs Healthcare
2 wins
BLLN BillionToOne, Inc.
$114.07 -7.3% 1M
Market cap
$5.29B
P/E
175.9x
Revenue (TTM)
$397.41M
Div. yield
–
Diagnostic Labs Healthcare
3 wins

Head to Head

10 decided of 12

Caris Life Sciences leads on 5 of the 12 questions below (Caris Life Sciences 5, BillionToOne 3, Castle Biosciences 2). Which ones matter depends on what you are buying for; a cheap multiple and slow growth often come together.

QuestionCAICSTLBLLNLeader
Larger companyMarket capitalisation $10.16B $1.12B $5.29B CAI
Cheaper on earningsLower P/E, profitable companies only 96.7x -57.9x 175.9x CAI
Cheaper on forward earningsLower price / next fiscal year consensus EPS 306.1x — 150.1x BLLN
Faster revenue growthRevenue growth, trailing twelve months +85.4% +3.2% +90.1% BLLN
More profitableNet margin, trailing twelve months 10.6% -5.4% 7.6% CAI
Better return on capitalReturn on invested capital 15.6% -6.7% 7.0% CAI
Less leveragedLower net debt / EBITDA -2.2x 15.5x -9.1x BLLN
Higher dividend yieldTrailing dividend yield 0.00% 0.00% 0.00% –
Better 1-year returnPrice return, last 12 months +11.3% +44.0% — CSTL
Better 5-year returnAnnualised price return, 5 years — -11.6%/yr — –
Less volatileAnnualised volatility, 1 year 69.5% 58.3% 94.5% CSTL
Higher overall scoreMean of the five percentile scores vs peers 70/100 50/100 57/100 CAI

Percentile Scorecard

CAICSTLBLLN

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

AxisCAICSTLBLLN
Valuation 23 #71 of 92 47 #49 of 92 20 #74 of 92
Growth 99 #2 of 87 52 #42 of 87 100 #1 of 87
Profitability 89 #10 of 86 39 #53 of 86 60 #35 of 86
Financial Health 81 #19 of 97 92 #9 of 97 97 #4 of 97
Shareholder Returns 56 #25 of 56 20 #45 of 56 7 #52 of 56
Overall 70 50 57
  • CAI ranked among 102 companies in Healthcare Providers
  • CSTL ranked among 102 companies in Healthcare Providers
  • BLLN ranked among 102 companies in Healthcare Providers

Price Performance

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

Returns

PeriodCAICSTLBLLNSPY
1 month +5.3%-3.6%-7.3% -0.2%
3 months +116.0%+44.5%-14.6% +3.9%
6 months +82.6%+39.8%+45.8% +8.2%
Year to date +24.8%-11.3%+39.4% +12.9%
1 year +11.3%+44.0%— +12.3%
3 years —+164.2%— +87.4%
3 years, per year —+38.3%— +23.3%
5 years —-46.0%— +67.9%
5 years, per year —-11.6%— +10.9%

Risk

MeasureCAICSTLBLLNSPY
Volatility, 1Y 69.5%58.3%94.5% 12.7%
Downside volatility, 1Y 69.3%61.4%107.8% 12.7%
Beta vs S&P 500, 1Y 1.390.961.66 1.00
Return / volatility, 1Y 0.160.76— 0.97
Max drawdown, 5Y -63.0%-82.1%-50.8% -25.4%
From 52-week high 0.0%-19.8%-23.9% -1.2%
52-week high $33.67$43.04$149.97 $779.14
52-week low $14.55$18.15$64.03 $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.

MultipleCAICSTLBLLN
P/E now vs peer median 90.6xmedian 24.6x -54.0xmedian 24.6x 176.1xmedian 24.6x
P/S now vs peer median 9.6xmedian 1.6x 2.9xmedian 1.6x 13.4xmedian 1.6x
EV/EBITDA now vs peer median 50.6xmedian 14.6x -48.2xmedian 14.6x 97.2xmedian 14.6x
P/FCF now vs peer median 76.8xmedian 21.6x -2,153xmedian 21.6x 161.0xmedian 21.6x
P/B now vs peer median 16.1xmedian 3.2x 2.2xmedian 3.2x 10.0xmedian 3.2x
PEG now vs peer median —median 0.66 -1.28median 0.66 —median 0.66

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 monthsCAICSTLBLLN
Revenue $989.61M $357.28M $397.41M
Gross profit $689.36M $276.03M $283.22M
Operating income $153.26M -$32.11M $43.30M
Net income $105.14M -$19.42M $37.71M
Free cash flow $123.96M -$489.00K $33.18M
R&D $117.14M $55.45M $59.21M
EPS (diluted) $0.37 $-0.64 $0.55
Cash & equivalents $690.92M $62.12M $548.63M
Total debt $393.15M $10.08M $91.03M
Shares (diluted) 282.89M 30.40M 54.46M
Enterprise value $6.99B $9.27M $3.51B

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
MetricCAICSTLBLLN
P/E 90.6x -54.0x 176.1x
P/FCF 76.8x -2,153x 161.0x
P/Operating cash flow 56.4x 24.7x 117.8x
P/S 9.6x 2.9x 13.4x
P/B 16.1x 2.2x 10.0x
P/Tangible book 16.1x 2.2x 10.0x
EV/EBITDA 50.6x -48.2x 97.2x
EV/EBIT 59.5x -24.8x 112.8x
EV/Revenue 9.2x 2.2x 12.3x
EV/FCF 73.5x -1,628x 147.2x
EV/Operating cash flow 54.1x 18.7x 107.7x
PEG (3Y EPS CAGR) – -1.28 –

Growth

14 metrics
MetricCAICSTLBLLN
Revenue growth (1Y) 85.4% 3.2% 90.1%
Revenue CAGR (3Y) – 28.7% –
Gross profit growth (1Y) 141.2% -1.6% 122.4%
Gross profit CAGR (3Y) – 29.2% –
Operating income growth (1Y) 188.2% -39.3% 253.2%
Operating income CAGR (3Y) – 30.8% –
Net income growth (1Y) 137.7% -105.1% 223.2%
Net income CAGR (3Y) – 39.8% –
EPS growth (1Y) 103.0% -99.3% 118.7%
EPS CAGR (3Y) – 42.3% –
Operating cash flow growth (1Y) 227.3% -31.8% –
Operating cash flow CAGR (3Y) – 45.1% –
Free cash flow growth (1Y) 188.2% -101.4% –
Free cash flow CAGR (3Y) – 78.8% –

Profitability

14 metrics
MetricCAICSTLBLLN
Gross margin 69.7% 77.3% 71.3%
EBITDA margin 18.2% -4.6% 12.6%
Operating margin 15.5% -9.0% 10.9%
Pretax margin 10.6% -5.4% 9.5%
Net margin 10.6% -5.4% 7.6%
FCF margin 12.5% -0.1% 8.3%
Operating cash flow margin 17.0% 11.9% 11.4%
Return on equity 17.7% -4.2% 7.2%
Return on assets 8.8% -3.5% 5.3%
Return on invested capital 15.6% -6.7% 7.0%
Return on capital employed 15.3% -6.4% 6.6%
Asset turnover 0.8x 0.6x 0.6x
Cash conversion (OCF / net income) 1.6x -2.2x 1.2x
Stock comp / revenue 6.6% 12.6% 6.4%

Financial Health

11 metrics
MetricCAICSTLBLLN
Debt / assets 32.0% 1.8% 12.5%
Debt / equity 0.7x 0.0x 0.2x
Net debt / EBITDA -2.2x 15.5x -9.1x
Debt / FCF 3.2x -20.6x 2.7x
Liabilities / assets 51.9% 16.2% 26.4%
Equity / assets 48.1% 83.8% 73.6%
Interest coverage 3.3x -85.6x 1,056x
Current ratio 5.5x 6.0x 11.7x
Quick ratio 4.8x 5.6x 11.2x
Cash ratio 4.1x 4.7x 9.8x
Altman Z-score 8.11 7.39 17.86

Shareholder Returns

7 metrics
MetricCAICSTLBLLN
Dividend yield – – –
Net buyback yield 0.1% -0.5% -5.7%
Shareholder yield 0.1% -0.5% -5.7%
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.

ConsensusCAICSTLBLLN
Forward P/E 306.1xFY2026 – 150.1xFY2026
EPS, next fiscal year $0.11FY2026 $-1.31FY2026 $0.76FY2026
EPS growth, next FY – – +442.9%FY2026
EPS growth, the year after +236.4% – +22.4%
Revenue, next fiscal year $1.06BFY2026 $385.85MFY2026 $481.76MFY2026
Revenue growth, next FY +30.1%FY2026 +12.1%FY2026 +57.9%FY2026
Revenue growth, the year after +21.6% +2.3% +27.1%

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersCAICSTLBLLN
Held by institutions 52.0% 89.6% 32.6%
Institutions holding 245 177 155
Change in shares held, QoQ -6.3% -1.0% +34.7%
Institutions buying 175 104 127
Institutions selling 47 55 13
Buyers to sellers 3.72 1.89 9.77

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.

CAICSTLBLLN
CAI 1.00 0.33 0.10
CSTL 0.33 1.00 0.16
BLLN 0.10 0.16 1.00

Add a Peer

Largest companies in the same industry

Related Comparisons

Frequently Asked Questions

Which is bigger, CAI, CSTL and BLLN?

Caris Life Sciences (CAI) is the largest by market capitalisation: Caris Life Sciences (CAI) $10.16B, Castle Biosciences (CSTL) $1.12B, BillionToOne (BLLN) $5.29B.

Which stock is cheaper, CAI, CSTL and BLLN?

Caris Life Sciences (CAI) trades on the lowest price-to-earnings ratio (Caris Life Sciences (CAI) 96.7x, Castle Biosciences (CSTL) -57.9x, BillionToOne (BLLN) 175.9x). On next year's consensus earnings, BillionToOne (BLLN) is cheapest (Caris Life Sciences (CAI) 306.1x, BillionToOne (BLLN) 150.1x). A lower multiple can reflect slower expected growth, so read it next to the growth figures.

Which company is growing faster?

BillionToOne (BLLN) grew revenue fastest over the trailing twelve months: Caris Life Sciences (CAI) +85.4%, Castle Biosciences (CSTL) +3.2%, BillionToOne (BLLN) +90.1%.

Which company is more profitable?

Caris Life Sciences (CAI) has the highest net margin (Caris Life Sciences (CAI) 10.6%, Castle Biosciences (CSTL) -5.4%, BillionToOne (BLLN) 7.6%). On return on invested capital, Caris Life Sciences (CAI) leads (Caris Life Sciences (CAI) 15.6%, Castle Biosciences (CSTL) -6.7%, BillionToOne (BLLN) 7.0%).

Which stock has performed better?

Over the past year Castle Biosciences (CSTL) returned the most: Caris Life Sciences (CAI) +11.3%, Castle Biosciences (CSTL) +44.0%. Returns are price only, before dividends.

Which stock is riskier?

By one-year price volatility, Castle Biosciences (CSTL) has been the steadiest (Caris Life Sciences (CAI) 69.5%, Castle Biosciences (CSTL) 58.3%, BillionToOne (BLLN) 94.5%). Volatility measures how widely the price swings, not the risk of the business.

Which is the better stock, CAI, CSTL and BLLN?

There is no single answer; it depends on what you are buying for. On the 12 head-to-head measures on this page, Caris Life Sciences (CAI) 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.