Is DGX or DXCM cheaper?

On trailing earnings, DGX is cheaper: DGX trades at a 23.19 P/E and DXCM at 30.53.

Which has grown faster, DGX or DXCM?

Over the past five years, DXCM grew revenue faster — DGX at a 0.89% CAGR versus DXCM at 18.91%.

Does DGX or DXCM pay a bigger dividend?

DGX pays a dividend (1.58% yield) while DXCM does not currently pay one.

Is DGX or DXCM more profitable?

DXCM runs the higher net margin — DGX at 12.02% versus DXCM at 19.31%.

Which has been the better investment, DGX or DXCM?

Over the past 10-year, DXCM delivered the higher annualized total return — DGX at 11.64% versus DXCM at 12.52%. Past performance doesn't predict future results.

Quest Diagnostics Incorporated (DGX) vs DexCom, Inc. (DXCM)

DXCM leads on 9 of 16 compared metrics, though DGX is the cheaper stock.

A side-by-side comparison of Quest Diagnostics Incorporated and DexCom, Inc. across valuation, profitability, dividends, and growth — built entirely from reported fundamentals, as of July 23, 2026. The ● marks the stronger figure on each row (cheaper multiple, higher margin/return).

DGX

Quest Diagnostics Incorporated

$25.23B

$227.90HealthcareDelayed quote: Jul 23, 2026, 4:00 PM EDT

DXCM

DexCom, Inc.

$27.20B

$70.48HealthcareDelayed quote: Jul 23, 2026, 4:00 PM EDT

Total return — DGX vs DXCM

growth of $100 · dividends reinvested · last 21y

DGX +455.3%DXCM +2329.6%DXCM compounded faster

DGX DXCM

DGX vs DXCM: by the numbers

•DXCM is the larger company ($27.20B vs $25.23B market cap).
•DGX trades at the lower earnings multiple (23.19 vs 30.53 P/E).
•DXCM converts more revenue to profit (19.31% vs 12.02% net margin).
•DXCM grew revenue faster over the past five years (18.91% vs 0.89% CAGR).
•DGX pays a dividend (1.58% yield) while DXCM does not currently pay one.

Which is better, DGX or DXCM?

Metric tally: DGX 7 · DXCM 9

It depends on what you're optimizing for:

ValueDGX(lower P/E)

GrowthDXCM(faster 5Y revenue CAGR)

QualityDXCM(higher ROIC)

Metrics side by side

Valuation

Metric	DGX	DXCM
P/E ratio	23.19●	30.53
Forward P/E	19.52●	27.54
P/S ratio	2.08●	5.84
P/B ratio	3.19●	9.51
PEG ratio	1.43	0.67●
EV / EBITDA	14.46●	21.96
FCF yield	5.64%●	5.08%

Profitability

Metric	DGX	DXCM
Gross margin	33.15%	61.84%●
Operating margin	14.14%	21.45%●
Net margin	12.02%	19.31%●
ROE	18.49%	31.47%●
ROIC	8.43%	16.61%●

Dividends

Metric	DGX	DXCM
Dividend yield	1.58%	—
Payout ratio	37.43%	—

Growth (annualized)

Metric	DGX	DXCM
Revenue CAGR (5Y)	0.89%	18.91%●
EPS CAGR (5Y)	-3.65%	10.31%●
FCF CAGR (5Y)	-9.08%	43.37%●
Total return CAGR (5Y)	10.88%●	-8.72%

Frequently asked

Which is better, DGX or DXCM?: It depends on your goal. value: DGX (lower P/E); growth: DXCM (faster 5Y revenue CAGR); quality: DXCM (higher ROIC). Across all compared metrics, DXCM leads 9 to 7.
Is DGX or DXCM cheaper?: On trailing earnings, DGX is cheaper: DGX trades at a 23.19 P/E and DXCM at 30.53.
Which has grown faster, DGX or DXCM?: Over the past five years, DXCM grew revenue faster — DGX at a 0.89% CAGR versus DXCM at 18.91%.
Does DGX or DXCM pay a bigger dividend?: DGX pays a dividend (1.58% yield) while DXCM does not currently pay one.
Is DGX or DXCM more profitable?: DXCM runs the higher net margin — DGX at 12.02% versus DXCM at 19.31%.
Which has been the better investment, DGX or DXCM?: Over the past 10-year, DXCM delivered the higher annualized total return — DGX at 11.64% versus DXCM at 12.52%. Past performance doesn't predict future results.

Go deeper

Full DGX analysis Full DXCM analysis Interactive comparison tool

Dig into the metrics

Quest Diagnostics P/E ratio DexCom P/E ratio Quest Diagnostics dividend yield DexCom dividend yield Quest Diagnostics ROE DexCom ROE Quest Diagnostics operating margin DexCom operating margin Quest Diagnostics revenue growth DexCom revenue growth Quest Diagnostics free cash flow DexCom free cash flow

Quest Diagnostics & DexCom appear in these rankings

Fastest Revenue Growth Stocks Highest ROE Stocks Highest FCF Yield Stocks

Figures are sourced from reported fundamentals and the latest end-of-day price. This comparison is informational only and is not investment advice. Past performance does not predict future results. See our methodology. Compiled by TGMCharts Research · data verified July 23, 2026.