DGX vs GH vs BLLN Stock Comparison

Quest Diagnostics, Guardant Health and BillionToOne Prices as of Oct 23, 2026 Peers: Industry group
DGX Quest Diagnostics Inc
$241.90 +3.8% 1M +32.0% 1Y
Market cap
$26.69B
P/E
23.6x
Revenue (TTM)
$11.84B
Div. yield
0.01%
Diagnostic Labs Healthcare
8 wins
GH Guardant Health, Inc.
$169.08 -4.1% 1M +143.8% 1Y
Market cap
$23.05B
P/E
–
Revenue (TTM)
$1.18B
Div. yield
–
Diagnostic Labs Healthcare
1 win
BLLN BillionToOne, Inc.
$107.77 -5.8% 1M
Market cap
$5.16B
P/E
171.7x
Revenue (TTM)
$397.41M
Div. yield
–
Diagnostic Labs Healthcare
2 wins

Head to Head

11 decided of 12

Quest Diagnostics leads on 8 of the 12 questions below (Quest Diagnostics 8, BillionToOne 2, Guardant Health 1). Which ones matter depends on what you are buying for; a cheap multiple and slow growth often come together.

QuestionDGXGHBLLNLeader
Larger companyMarket capitalisation $26.69B $23.05B $5.16B DGX
Cheaper on earningsLower P/E, profitable companies only 23.6x -50.8x 171.7x DGX
Cheaper on forward earningsLower price / next fiscal year consensus EPS 22.3x — 141.8x DGX
Faster revenue growthRevenue growth, trailing twelve months +9.1% +42.7% +90.1% BLLN
More profitableNet margin, trailing twelve months 9.5% -38.3% 7.6% DGX
Better return on capitalReturn on invested capital 9.9% — 7.0% DGX
Less leveragedLower net debt / EBITDA 2.1x — -9.1x BLLN
Higher dividend yieldTrailing dividend yield 0.01% 0.00% 0.00% –
Better 1-year returnPrice return, last 12 months +32.0% +143.8% — GH
Better 5-year returnAnnualised price return, 5 years +10.6%/yr +9.1%/yr — DGX
Less volatileAnnualised volatility, 1 year 23.8% 57.4% 94.8% DGX
Higher overall scoreMean of the five percentile scores vs peers 64/100 27/100 56/100 DGX

Percentile Scorecard

DGXGHBLLN

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

AxisDGXGHBLLN
Valuation 72 #27 of 93 17 #77 of 93 20 #75 of 93
Growth 40 #53 of 88 48 #46 of 88 100 #1 of 88
Profitability 77 #21 of 87 7 #81 of 87 59 #36 of 87
Financial Health 56 #45 of 100 50 #51 of 100 96 #5 of 100
Shareholder Returns 76 #14 of 56 15 #48 of 56 7 #52 of 56
Overall 64 27 56
  • DGX ranked among 103 companies in Healthcare Providers
  • GH ranked among 103 companies in Healthcare Providers
  • BLLN ranked among 103 companies in Healthcare Providers

Price Performance

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

Returns

PeriodDGXGHBLLNSPY
1 month +3.8%-4.1%-5.8% -1.0%
3 months +6.1%+14.8%-14.5% +2.9%
6 months +23.2%+90.2%+27.2% +6.4%
Year to date +39.4%+65.5%+31.7% +11.4%
1 year +32.0%+143.8%— +13.1%
3 years +95.7%+541.9%— +79.4%
3 years, per year +25.1%+85.9%— +21.5%
5 years +65.1%+54.6%— +67.7%
5 years, per year +10.6%+9.1%— +10.9%
10 years +189.0%—— +255.2%
10 years, per year +11.2%—— +13.5%

Risk

MeasureDGXGHBLLNSPY
Volatility, 1Y 23.8%57.4%94.8% 12.7%
Downside volatility, 1Y 18.8%48.6%107.8% 12.7%
Beta vs S&P 500, 1Y -0.101.011.65 1.00
Return / volatility, 1Y 1.352.50— 1.03
Max drawdown, 5Y -30.3%-86.7%-50.8% -25.4%
From 52-week high -2.3%-9.7%-28.1% -2.5%
52-week high $247.47$187.22$149.97 $779.14
52-week low $173.49$69.35$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.

MultipleDGXGHBLLN
P/E now vs peer median 23.6xmedian 25.3x -49.5xmedian 25.3x 166.4xmedian 25.3x
P/S now vs peer median 2.2xmedian 1.6x 19.1xmedian 1.6x 12.7xmedian 1.6x
EV/EBITDA now vs peer median 13.6xmedian 14.6x -49.9xmedian 14.6x 91.3xmedian 14.6x
P/FCF now vs peer median 19.4xmedian 22.7x -93.8xmedian 22.7x 152.1xmedian 22.7x
P/B now vs peer median 3.3xmedian 3.3x -101.4xmedian 3.3x 9.4xmedian 3.3x
PEG now vs peer median 1.61median 0.66 -4.99median 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 monthsDGXGHBLLN
Revenue $11.84B $1.18B $397.41M
Gross profit $3.92B $769.16M $283.22M
Operating income $1.72B -$470.26M $43.30M
Net income $1.18B -$453.44M $37.71M
Free cash flow $1.38B -$240.72M $33.18M
R&D – $375.79M $59.21M
EPS (diluted) $10.08 $-3.41 $0.55
Cash & equivalents $797.00M $1.05B $548.63M
Total debt $5.55B – $91.03M
Shares (diluted) 112.00M 132.87M 54.46M
Enterprise value $24.45B $19.11B $3.38B

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
MetricDGXGHBLLN
P/E 23.6x -49.5x 166.4x
P/FCF 19.4x -93.8x 152.1x
P/Operating cash flow 13.6x -122.0x 111.3x
P/S 2.2x 19.1x 12.7x
P/B 3.3x -101.4x 9.4x
P/Tangible book 4.2x -91.0x 9.4x
EV/EBITDA 13.6x -49.9x 91.3x
EV/EBIT 18.2x -45.8x 106.0x
EV/Revenue 2.6x 18.2x 11.5x
EV/FCF 22.8x -89.5x 138.3x
EV/Operating cash flow 16.1x -116.3x 101.2x
PEG (3Y EPS CAGR) 1.61 -4.99 –

Growth

14 metrics
MetricDGXGHBLLN
Revenue growth (1Y) 9.1% 42.7% 90.1%
Revenue CAGR (3Y) 8.4% 32.4% –
Gross profit growth (1Y) 8.5% 47.7% 122.4%
Gross profit CAGR (3Y) 8.4% – –
Operating income growth (1Y) 12.5% -2.1% 253.2%
Operating income CAGR (3Y) 15.1% 4.8% –
Net income growth (1Y) 15.0% -9.6% 223.2%
Net income CAGR (3Y) 12.9% 3.7% –
EPS growth (1Y) 17.6% -2.4% 118.7%
EPS CAGR (3Y) 14.6% 9.9% –
Operating cash flow growth (1Y) 3.5% 22.4% –
Operating cash flow CAGR (3Y) 21.8% 18.1% –
Free cash flow growth (1Y) -1.3% 11.4% –
Free cash flow CAGR (3Y) 32.1% 14.4% –

Profitability

14 metrics
MetricDGXGHBLLN
Gross margin 33.1% 65.0% 71.3%
EBITDA margin 19.5% -36.5% 12.6%
Operating margin 14.6% -39.7% 10.9%
Pretax margin 12.6% -38.4% 9.5%
Net margin 9.5% -38.3% 7.6%
FCF margin 11.6% -20.3% 8.3%
Operating cash flow margin 16.5% -15.7% 11.4%
Return on equity 15.0% – 7.2%
Return on assets 6.9% -23.7% 5.3%
Return on invested capital 9.9% – 7.0%
Return on capital employed 11.3% -29.9% 6.6%
Asset turnover 0.7x 0.6x 0.6x
Cash conversion (OCF / net income) 1.7x 0.4x 1.2x
Stock comp / revenue 0.7% 16.2% 6.4%

Financial Health

11 metrics
MetricDGXGHBLLN
Debt / assets 32.2% – 12.5%
Debt / equity 0.7x – 0.2x
Net debt / EBITDA 2.1x – -9.1x
Debt / FCF 4.0x – 2.7x
Liabilities / assets 53.8% 111.7% 26.4%
Equity / assets 46.2% -11.7% 73.6%
Interest coverage 6.5x -97.6x 1,056x
Current ratio 1.7x 4.0x 11.7x
Quick ratio 1.4x 3.5x 11.2x
Cash ratio 0.4x 3.1x 9.8x
Altman Z-score 3.69 4.44 16.94

Shareholder Returns

7 metrics
MetricDGXGHBLLN
Dividend yield 1.4% – –
Net buyback yield 1.2% -1.8% -6.0%
Shareholder yield 2.6% -1.8% -6.0%
Payout ratio (earnings) 31.3% – –
Payout ratio (FCF) 26.8% – –
Dividend growth (1Y) 6.3% – –
Dividend CAGR (3Y) 6.1% – –

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.

ConsensusDGXGHBLLN
Forward P/E 22.3xFY2026 – 141.8xFY2026
EPS, next fiscal year $10.86FY2026 $-3.34FY2026 $0.76FY2026
EPS growth, next FY +10.3%FY2026 – +442.9%FY2026
EPS growth, the year after +8.3% – +22.4%
Revenue, next fiscal year $11.19BFY2026 $1.42BFY2026 $481.77MFY2026
Revenue growth, next FY +1.3%FY2026 +44.5%FY2026 +57.9%FY2026
Revenue growth, the year after +7.8% +27.0% +27.1%

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersDGXGHBLLN
Held by institutions 94.4% 100.0% 32.6%
Institutions holding 1,096 594 155
Change in shares held, QoQ +2.7% -2.6% +34.7%
Institutions buying 549 353 127
Institutions selling 341 180 13
Buyers to sellers 1.61 1.96 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.

DGXGHBLLN
DGX 1.00 0.21 0.10
GH 0.21 1.00 0.30
BLLN 0.10 0.30 1.00

Add a Peer

Largest companies in the same industry

Related Comparisons

Frequently Asked Questions

Which is bigger, DGX, GH and BLLN?

Quest Diagnostics (DGX) is the largest by market capitalisation: Quest Diagnostics (DGX) $26.69B, Guardant Health (GH) $23.05B, BillionToOne (BLLN) $5.16B.

Which stock is cheaper, DGX, GH and BLLN?

Quest Diagnostics (DGX) trades on the lowest price-to-earnings ratio (Quest Diagnostics (DGX) 23.6x, Guardant Health (GH) -50.8x, BillionToOne (BLLN) 171.7x). On next year's consensus earnings, Quest Diagnostics (DGX) is cheapest (Quest Diagnostics (DGX) 22.3x, BillionToOne (BLLN) 141.8x). 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: Quest Diagnostics (DGX) +9.1%, Guardant Health (GH) +42.7%, BillionToOne (BLLN) +90.1%.

Which company is more profitable?

Quest Diagnostics (DGX) has the highest net margin (Quest Diagnostics (DGX) 9.5%, Guardant Health (GH) -38.3%, BillionToOne (BLLN) 7.6%). On return on invested capital, Quest Diagnostics (DGX) leads (Quest Diagnostics (DGX) 9.9%, BillionToOne (BLLN) 7.0%).

Which stock has performed better?

Over the past year Guardant Health (GH) returned the most: Quest Diagnostics (DGX) +32.0%, Guardant Health (GH) +143.8%. Over five years, Quest Diagnostics (DGX) compounded fastest (Quest Diagnostics (DGX) +10.6%/yr, Guardant Health (GH) +9.1%/yr). Returns are price only, before dividends.

Which pays a higher dividend?

Only one of these companies pays a dividend: Quest Diagnostics (DGX) 0.01%, Guardant Health (GH) 0.00%, BillionToOne (BLLN) 0.00%. Guardant Health (GH) and BillionToOne (BLLN) pays no regular dividend.

Which stock is riskier?

By one-year price volatility, Quest Diagnostics (DGX) has been the steadiest (Quest Diagnostics (DGX) 23.8%, Guardant Health (GH) 57.4%, BillionToOne (BLLN) 94.8%). Volatility measures how widely the price swings, not the risk of the business.

Which is the better stock, DGX, GH 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, Quest Diagnostics (DGX) leads on 8. 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.