Question 1

What is Quest Diagnostics's P/E ratio?

Accepted Answer

Quest Diagnostics (DGX) P/E ratio is 21.9× as of June 5, 2026. The ratio is calculated by dividing market capitalisation by trailing twelve-month earnings (net income), using USD-normalised financials (IAS 21 exchange-rate translation for non-USD reporters).

Question 2

How is the P/E ratio calculated?

Accepted Answer

P/E = Share Price ÷ Trailing Twelve-Month (TTM) Diluted EPS, or equivalently Market Capitalisation ÷ TTM Net Income. All inputs are sourced from audited GAAP/IFRS filings and translated to USD using period-end exchange rates so the multiple is comparable across companies and currencies.

Question 3

What is the P/E ratio?

Accepted Answer

The price-to-earnings (P/E) ratio, also called the earnings multiple, measures how much investors pay per dollar of a company's trailing twelve-month (TTM) earnings. It is calculated as share price ÷ TTM diluted EPS (equivalent to market capitalisation ÷ TTM net income). A higher P/E implies the market is pricing in stronger future earnings growth or lower risk; a lower P/E can signal slower expected growth, higher risk, or potential undervaluation.

Question 4

What is a good P/E ratio for Quest Diagnostics?

Accepted Answer

There is no universal "good" P/E. As a rule of thumb, the S&P 500 has historically averaged a P/E in the mid-to-high teens; mature, slow-growth businesses commonly trade in the 10–18× range, while high-growth or asset-light companies often trade at 25–50×+. What matters is the comparison to sector peers and to the company's own historical range. For Quest Diagnostics specifically, the relevant sector benchmark is the current sector median of 25.0×.

Question 5

Is Quest Diagnostics's P/E ratio high or low?

Accepted Answer

Quest Diagnostics's P/E ratio of 21.9× is above its own 5-year average of 16.6× and below the sector median of 25.0×. That places the current reading at the 88th percentile of its 10-year history. A higher multiple usually reflects stronger expected growth, lower perceived risk, or higher returns on capital; a lower multiple reflects the opposite.

Question 6

What is Quest Diagnostics's historical P/E ratio range?

Accepted Answer

In the available daily series, Quest Diagnostics (DGX) P/E ratio has ranged from a low of 7.4× in 2022 to a high of 42.1× in 2001. The 5-year average is 16.6× and the 5-year median is 18.4×.

Question 7

What was Quest Diagnostics's P/E ratio in 2025?

Accepted Answer

Quest Diagnostics (DGX) P/E ratio at the end of 2025 was 19.4×. Annual values reflect the multiple on the last trading day of each calendar year, using the trailing twelve-month earnings figure available at that date.

Question 8

Why does Quest Diagnostics's P/E ratio change over time?

Accepted Answer

Valuation multiples move with two inputs: the numerator (market capitalisation, which tracks the share price) and the denominator (earnings). Share-price changes — driven by interest rates, earnings expectations, risk appetite, and broader market sentiment — typically dominate short-term moves, while changes in the underlying fundamental drive the longer-term trend. As a result, the ratio can rise during stock-price rallies even if the business itself has not become more valuable, and fall during sell-offs even when fundamentals are improving.


2025	$19.26B	$992.00M	19.4×	+0.2×	Dec 31, 2025
2024	$16.75B	$871.00M	19.2×	+1.1×	Dec 31, 2024
2023	$15.44B	$854.00M	18.1×	-0.7×	Dec 31, 2023
2022	$17.68B	$942.00M	18.8×	+8.1×	Dec 31, 2022
2021	$21.11B	$1.99B	10.6×	-0.7×	Dec 31, 2021
2020	$16.09B	$1.43B	11.3×	-5.8×	Dec 31, 2020
2019	$14.31B	$836.00M	17.1×	+1.7×	Dec 31, 2019
2018	$11.32B	$733.00M	15.4×	-2.0×	Dec 31, 2018
2017	$13.39B	$769.00M	17.4×	-2.3×	Dec 31, 2017
2016	$12.68B	$642.00M	19.8×	+5.3×	Dec 31, 2016
2015	$10.17B	$706.00M	14.4×	-3.1×	Dec 31, 2015
2014	$9.72B	$554.00M	17.6×	+8.3×	Dec 31, 2014
2013	$7.82B	$846.02M	9.2×	-7.5×	Dec 31, 2013
2012	$9.25B	$553.77M	16.7×	+2.9×	Dec 31, 2012
2011	$9.19B	$665.23M	13.8×	+1.7×	Dec 31, 2011
2010	$8.72B	$720.89M	12.1×	-2.8×	Dec 31, 2010
2009	$10.88B	$729.11M	14.9×	-2.0×	Dec 31, 2009
2008	$9.83B	$581.49M	16.9×	-13.2×	Dec 31, 2008
2007	$10.24B	$339.94M	30.1×	+12.6×	Dec 31, 2007
2006	$10.25B	$586.42M	17.5×	-1.2×	Dec 31, 2006
2005	$10.21B	$546.28M	18.7×	-0.5×	Dec 31, 2005
2004	$9.57B	$499.19M	19.2×	+1.9×	Dec 31, 2004
2003	$7.54B	$436.72M	17.3×	+0.1×	Dec 31, 2003
2002	$5.52B	$322.15M	17.2×	-25.0×	Dec 31, 2002
2001	$6.83B	$162.30M	42.1×	—	Dec 31, 2001


Agilent Technologies (A)	23.1×
Medtronic (MDT)	22.2×
McKesson (MCK)	22.2×
Illumina (ILMN)	21.7×
ResMed (RMD)	21.6×
GE HealthCare (GEHC)	21.6×
Pfizer (PFE)	21.1×
Henry Schein (HSIC)	21.0×
AptarGroup (ATR)	20.9×
IQVIA (IQV)	20.7×
UnitedHealth Group (UNH)	20.4×
Biogen (BIIB)	19.7×
Zoetis (ZTS)	18.9×
Gilead Sciences (GILD)	18.8×
Humana (HUM)	18.5×
Regeneron Pharmaceuticals (REGN)	18.2×
Bristol-Myers Squibb (BMY)	17.0×
HCA Healthcare (HCA)	15.8×
DaVita (DVA)	13.3×
Incyte (INCY)	13.1×
Elevance Health (ELV)	12.3×
Cigna (CI)	11.1×
Novo Nordisk (NVO)	8.6×
Solventum (SOLV)	7.9×
Universal Health Services (UHS)	7.2×

P/E Ratio for Quest Diagnostics (DGX)

P/E Ratio daily chart for Quest Diagnostics (DGX)

Historical P/E Ratio for Quest Diagnostics (DGX) from 2001 to 2025

About P/E Ratio at Quest Diagnostics (DGX)

Quest Diagnostics P/E Ratio by Year

Quest Diagnostics P/E Ratio 2025: 19.4×

Quest Diagnostics P/E Ratio 2024: 19.2×

Quest Diagnostics P/E Ratio 2023: 18.1×

Quest Diagnostics P/E Ratio 2022: 18.8×

Quest Diagnostics P/E Ratio 2021: 10.6×

Sector peers by P/E Ratio — chart

Sector peers by P/E Ratio — table

Frequently asked questions

Quest Diagnostics (DGX) Key Financials

P/E Ratio daily chart for Quest Diagnostics (DGX)

Historical P/E Ratio for Quest Diagnostics (DGX) from 2001 to 2025

About P/E Ratio at Quest Diagnostics (DGX)

Quest Diagnostics P/E Ratio by Year

Quest Diagnostics P/E Ratio 2025: 19.4×

Quest Diagnostics P/E Ratio 2024: 19.2×

Quest Diagnostics P/E Ratio 2023: 18.1×

Quest Diagnostics P/E Ratio 2022: 18.8×

Quest Diagnostics P/E Ratio 2021: 10.6×

Sector peers by P/E Ratio — chart

Sector peers by P/E Ratio — table

Frequently asked questions

+What is Quest Diagnostics's P/E ratio?

+How is the P/E ratio calculated?

+What is the P/E ratio?

+What is a good P/E ratio for Quest Diagnostics?

+Is Quest Diagnostics's P/E ratio high or low?

+What is Quest Diagnostics's historical P/E ratio range?

+What was Quest Diagnostics's P/E ratio in 2025?

+Why does Quest Diagnostics's P/E ratio change over time?

Quest Diagnostics (DGX) Key Financials