DGX vs. ZBH: Quest Diagnostics vs. Zimmer Biomet Stock Comparison

November 11, 2026

How do Quest Diagnostics (DGX) and Zimmer Biomet (ZBH) stack up? This page sets them side by side across company profile, performance and risk, profitability, growth, financial strength, dividends, and valuation, with selected fundamentals also measured against each stock's industry-group peers.

Company Profile

Quest Diagnostics (DGX) and Zimmer Biomet (ZBH) both fall under the Health Care Equipment & Services industry group, but DGX is classified in Health Care Providers & Services while ZBH is classified in Health Care Equipment & Supplies.

Company profile comparison for Quest Diagnostics (DGX) and Zimmer Biomet (ZBH)
Profile Item	DGX	ZBH
Name	Quest Diagnostics Incorporated	Zimmer Biomet Holdings Inc.
Country/Region	United States	United States
GICS Sector	Health Care	Health Care
GICS Industry Group	Health Care Equipment & Services	Health Care Equipment & Services
GICS Industry	Health Care Providers & Services	Health Care Equipment & Supplies
GICS Sub-Industry	Health Care Services	Health Care Equipment
Market Capitalization	28.21 billion USD	19.98 billion USD
Currency	USD	USD
Exchange	NYSE	NYSE
Listing Date	December 17, 1996	July 25, 2001
Security Type	Common Stock	Common Stock

Price Performance

Cumulative Growth

DGX

ZBH

GSPC

Quest Diagnostics (DGX) vs. Zimmer Biomet (ZBH), with S&P 500 (GSPC) for reference: Growth of a $10,000 investment over the past five years. Adjusted for dividends and splits.

Trailing Returns

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Trailing total returns for Quest Diagnostics (DGX) and Zimmer Biomet (ZBH). Returns over one year are annualized.

Calendar-Year Returns

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Calendar-year total returns for Quest Diagnostics (DGX) and Zimmer Biomet (ZBH). Each bar is that year's total return, measured year-end to year-end.

Performance Metrics

Price performance metrics for Quest Diagnostics (DGX) and Zimmer Biomet (ZBH)
Metric	DGX	ZBH
Total Return (1Y)	45.88%	24.04%
Total Return (3Y, Annualized)	27.45%	2.38%
Total Return (5Y, Annualized)	14.84%	-2.74%

Risk Profile

Drawdown History

DGX

ZBH

GSPC

Quest Diagnostics (DGX) vs. Zimmer Biomet (ZBH), with S&P 500 (GSPC) for reference: Drawdown from the running peak over the past five years. Each line shows the decline from its prior peak; 0% marks a new high.

Return Distribution

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Distribution of monthly total returns for Quest Diagnostics (DGX) and Zimmer Biomet (ZBH). Each bar is the share of months whose return fell in that 5% bucket.

Risk Metrics

Risk profile metrics for Quest Diagnostics (DGX) and Zimmer Biomet (ZBH)
Metric	DGX	ZBH
Volatility (1Y, Annualized)	24.06%	32.39%
Beta (5Y)	0.54	0.42
Max Drawdown (5Y)	-28.62%	-43.94%
Avg. Volume (3M)	1.00M	2.09M

Risk-Adjusted Performance

Risk-Return Positioning

DGX and ZBH are plotted by 1-year volatility (risk) and 1-year return. The dashed Capital Allocation Line runs from the risk-free rate through the shared industry median.

Risk-Adjusted Metrics

Risk-adjusted metrics for Quest Diagnostics (DGX) and Zimmer Biomet (ZBH)
Metric	DGX	ZBH
Sharpe Ratio (1Y)	1.73	0.61
Sortino Ratio (1Y)	3.16	0.93

Profitability

ROE (TTM)

Quest Diagnostics (DGX) at 15.32% sits in the top ROE quartile, while Zimmer Biomet (ZBH) at 6.03% is closer to the peer norm — stronger capital efficiency for DGX.

DGX

Health Care Equipment & Services industry group

15.32%

Max: 47.61%
DGX: 15.32%
Q3: 14.36%
Median: 5.45%
Q1: -10.67%
Min: -47.01%

ZBH

Health Care Equipment & Services industry group

6.03%

Max: 47.61%
Q3: 14.36%
ZBH: 6.03%
Median: 5.45%
Q1: -10.67%
Min: -47.01%

Quest Diagnostics (DGX) vs. Zimmer Biomet (ZBH): A comparison of their ROE against the Health Care Equipment & Services industry group benchmark.

Net Margin (TTM)

Quest Diagnostics (DGX) at 9.54% retains a top-quartile share of revenue as profit, ahead of Zimmer Biomet (ZBH) at 8.95%, which keeps about the industry-typical share.

DGX

Health Care Equipment & Services industry group

9.54%

Max: 29.35%
DGX: 9.54%
Q3: 9.33%
Median: 2.18%
Q1: -6.29%
Min: -28.46%

ZBH

Health Care Equipment & Services industry group

8.95%

Max: 29.35%
Q3: 9.33%
ZBH: 8.95%
Median: 2.18%
Q1: -6.29%
Min: -28.46%

Quest Diagnostics (DGX) vs. Zimmer Biomet (ZBH): A comparison of their net margin against the Health Care Equipment & Services industry group benchmark.

Operating Margin (TTM)

Both Quest Diagnostics (DGX) at 15.63% and Zimmer Biomet (ZBH) at 17.35% convert sales into operating profit at a top-quartile rate, pointing to tighter cost discipline before financing and tax.

DGX

Health Care Equipment & Services industry group

15.63%

Max: 35.43%
DGX: 15.63%
Q3: 14.14%
Median: 6.81%
Q1: -0.28%
Min: -16.29%

ZBH

Health Care Equipment & Services industry group

17.35%

Max: 35.43%
ZBH: 17.35%
Q3: 14.14%
Median: 6.81%
Q1: -0.28%
Min: -16.29%

Quest Diagnostics (DGX) vs. Zimmer Biomet (ZBH): A comparison of their operating margin against the Health Care Equipment & Services industry group benchmark.

Profitability Metrics

Profitability metrics for Quest Diagnostics (DGX) and Zimmer Biomet (ZBH)
Metric	DGX	ZBH
ROE (TTM)	15.32%	6.03%
ROA (TTM)	6.61%	3.81%
Net Margin (TTM)	9.54%	8.95%
Operating Margin (TTM)	15.63%	17.35%
Gross Margin (TTM)	33.18%	69.33%

Growth

Revenue Growth

Both Quest Diagnostics (DGX) at 11.78% and Zimmer Biomet (ZBH) at 7.20% land near their industries' usual revenue growth ranges, so top-line momentum looks broadly in line with peers on both sides.

Quest Diagnostics (DGX) vs. Zimmer Biomet (ZBH): A comparison of their Revenue Growth across different time periods.

EPS Growth

Both Quest Diagnostics (DGX) at 13.78% and Zimmer Biomet (ZBH) at -19.86% land near their industries' usual EPS growth ranges, so bottom-line momentum looks broadly in line with peers on both sides.

Quest Diagnostics (DGX) vs. Zimmer Biomet (ZBH): A comparison of their EPS Growth across different time periods.

Growth Metrics

Growth metrics for Quest Diagnostics (DGX) and Zimmer Biomet (ZBH)
Metric	DGX	ZBH
Revenue Growth (YoY)	11.78%	7.20%
Revenue Growth (3Y CAGR)	3.74%	5.85%
EPS Growth (YoY)	13.78%	-19.86%
EPS Growth (3Y CAGR)	3.16%	47.78%

Financial Strength

Current Ratio (MRQ)

Both Quest Diagnostics (DGX) at 1.70 and Zimmer Biomet (ZBH) at 1.46 carry current ratio within their industries’ typical mid-ranges, suggesting balanced short-term liquidity relative to peers.

DGX

Health Care Equipment & Services industry group

1.70

Max: 7.59
Q3: 4.00
Median: 1.98
DGX: 1.70
Q1: 1.37
Min: 0.30

ZBH

Health Care Equipment & Services industry group

1.46

Max: 7.59
Q3: 4.00
Median: 1.98
ZBH: 1.46
Q1: 1.37
Min: 0.30

Quest Diagnostics (DGX) vs. Zimmer Biomet (ZBH): A comparison of their current ratio against the Health Care Equipment & Services industry group benchmark.

Debt / Equity (MRQ)

Both Quest Diagnostics (DGX) at 0.80 and Zimmer Biomet (ZBH) at 0.60 fund their balance sheets with roughly industry-typical debt-to-equity mixes.

DGX

Health Care Equipment & Services industry group

0.80

Max: 1.88
Q3: 0.91
DGX: 0.80
Median: 0.58
Q1: 0.16
Min: 0.00

ZBH

Health Care Equipment & Services industry group

0.60

Max: 1.88
Q3: 0.91
ZBH: 0.60
Median: 0.58
Q1: 0.16
Min: 0.00

Quest Diagnostics (DGX) vs. Zimmer Biomet (ZBH): A comparison of their debt-to-equity ratio against the Health Care Equipment & Services industry group benchmark.

Financial Strength Metrics

Financial strength metrics for Quest Diagnostics (DGX) and Zimmer Biomet (ZBH)
Metric	DGX	ZBH
Current Ratio (MRQ)	1.70	1.46
Debt / Equity (MRQ)	0.80	0.60
Net Debt / EBITDA	2.38	2.85

Dividends

Dividend Yield (TTM)

Both Quest Diagnostics (DGX) at 1.33% and Zimmer Biomet (ZBH) at 0.90% yield above their industries’ entire benchmark ranges — high enough that dividend safety, not income, becomes the first question.

DGX

Health Care Equipment & Services industry group

1.33%

DGX: 1.33%
Max: 0.00%
Q3: 0.00%
Median: 0.00%
Q1: 0.00%
Min: 0.00%

ZBH

Health Care Equipment & Services industry group

0.90%

ZBH: 0.90%
Max: 0.00%
Q3: 0.00%
Median: 0.00%
Q1: 0.00%
Min: 0.00%

Quest Diagnostics (DGX) vs. Zimmer Biomet (ZBH): A comparison of their dividend yield against the Health Care Equipment & Services industry group benchmark.

Dividend Payout Ratio (TTM)

Both Quest Diagnostics (DGX) at 25.10% and Zimmer Biomet (ZBH) at 24.24% pay out more of their earnings than any of their industry peers — the thinnest cover in their groups, so dividend headroom deserves attention.

DGX

Health Care Equipment & Services industry group

25.10%

DGX: 25.10%
Max: 0.00%
Q3: 0.00%
Median: 0.00%
Q1: 0.00%
Min: 0.00%

ZBH

Health Care Equipment & Services industry group

24.24%

ZBH: 24.24%
Max: 0.00%
Q3: 0.00%
Median: 0.00%
Q1: 0.00%
Min: 0.00%

Quest Diagnostics (DGX) vs. Zimmer Biomet (ZBH): A comparison of their payout ratio against the Health Care Equipment & Services industry group benchmark.

Dividend Metrics

Dividend metrics for Quest Diagnostics (DGX) and Zimmer Biomet (ZBH)
Metric	DGX	ZBH
Dividend Yield (TTM)	1.33%	0.90%
Dividend Payout Ratio (TTM)	25.10%	24.24%

Valuation

P/E Ratio (TTM)

Both Quest Diagnostics (DGX) at 25.46 and Zimmer Biomet (ZBH) at 26.66 land around their industries’ usual P/E ratio levels — neither is getting a clear earnings-multiple discount or premium versus peers.

DGX

Health Care Equipment & Services industry group

25.46

Max: 80.41
Q3: 47.62
Median: 29.93
DGX: 25.46
Q1: 21.19
Min: 4.21

ZBH

Health Care Equipment & Services industry group

26.66

Max: 80.41
Q3: 47.62
Median: 29.93
ZBH: 26.66
Q1: 21.19
Min: 4.21

Quest Diagnostics (DGX) vs. Zimmer Biomet (ZBH): A comparison of their P/E ratio against the Health Care Equipment & Services industry group benchmark.

P/S Ratio (TTM)

On P/S ratio, both Quest Diagnostics (DGX) at 2.38 and Zimmer Biomet (ZBH) at 2.33 are priced roughly in line with their industries — neither looks cheap nor rich on a sales basis.

DGX

Health Care Equipment & Services industry group

2.38

Max: 8.80
Q3: 4.32
DGX: 2.38
Median: 2.13
Q1: 1.10
Min: 0.03

ZBH

Health Care Equipment & Services industry group

2.33

Max: 8.80
Q3: 4.32
ZBH: 2.33
Median: 2.13
Q1: 1.10
Min: 0.03

Quest Diagnostics (DGX) vs. Zimmer Biomet (ZBH): A comparison of their P/S ratio against the Health Care Equipment & Services industry group benchmark.

P/B Ratio (MRQ)

Zimmer Biomet (ZBH) at 1.58 sits in the lower P/B ratio quartile against book while Quest Diagnostics (DGX) at 3.68 is valued near its industry’s middle — ZBH is cheaper on assets, though weigh it against ROE and asset quality.

DGX

Health Care Equipment & Services industry group

3.68

Max: 11.68
Q3: 6.12
DGX: 3.68
Median: 3.00
Q1: 1.73
Min: -1.31

ZBH

Health Care Equipment & Services industry group

1.58

Max: 11.68
Q3: 6.12
Median: 3.00
Q1: 1.73
ZBH: 1.58
Min: -1.31

Quest Diagnostics (DGX) vs. Zimmer Biomet (ZBH): A comparison of their P/B ratio against the Health Care Equipment & Services industry group benchmark.

Valuation Metrics

Valuation metrics for Quest Diagnostics (DGX) and Zimmer Biomet (ZBH)
Metric	DGX	ZBH
P/E Ratio (TTM)	25.46	26.66
P/S Ratio (TTM)	2.38	2.33
P/B Ratio (MRQ)	3.68	1.58
Free Cash Flow Yield (TTM)	3.09%	7.22%