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Quest Diagnostics price to book ratio DGX

Market value divided by the book value of the company's net assets, since 2009.

Today, Oct 23, 2026
3.6×
10-year median
2.6×
Against its 10-year history
99th
percentile: 0 is its lowest day, 100 its highest
10-year range
1.7× to 3.6×
Peer median
6.6×

Quest Diagnostics' price to book ratio is 3.6× as of Oct 23, 2026.

That is above its ten-year median of 2.6×, higher than on 99% of days in the last ten years.

Over that time it ranged from 1.7× in Apr 2020 to 3.6× in Sep 2026.

The median for 10 diagnostics and research stocks of a similar size is 6.6×.

Price to book ratio over time

The dashed line is the 10-year median and the shaded band the middle half of its days.

Open the interactive chart, with overlays and comparisons

Year by year

YearEnd of yearLowHigh
2026 so far3.6×2.7×3.6×
20252.7×2.5×2.9×
20242.5×2.2×2.7×
20232.4×2.2×2.8×
20222.9×2.2×3.0×
20213.3×2.3×3.3×
20202.5×1.7×3.0×
20192.6×2.1×2.6×
20182.1×2.1×3.1×
20172.8×2.6×3.3×
20162.7×1.9×2.7×
20152.2×2.1×2.7×
20142.3×1.9×2.3×
20132.0×2.0×2.4×
20122.2×2.2×2.6×
20112.6×2.1×3.0×
20102.4×2.0×2.8×
20092.9×2.5×2.9×

Against its peers

Companies in Medical - Diagnostics & Research nearest Quest Diagnostics' size, closest first, today.

CompanyPrice to book ratio
DGXQuest Diagnostics3.6×
LHLabcorp3.1×
MTDMettler-Toledo Internationaln/m
MEDPMedpace43.1×
RVTYRevvity2.5×
ILMNIllumina14.3×
IDXXIDEXX Laboratories27.4×
WATWaters2.9×
IQVIQVIA7.5×
AAgilent Technologies6.6×
BIOBio-Rad Laboratories1.4×
Peer median6.6×

What the price to book ratio tells you

Market value divided by the accounting value of the company's net assets. Below 1 means the market values the business at less than what it owns on paper.

Book value misses brands, software and people, so asset-light companies always look expensive on it. Most useful for banks and industrials.

More on Quest Diagnostics

Valuation data, not investment advice. Prices as of . Reported figures come from the company's filings with the SEC.