Quest Diagnostics (DGX) - Market capitalization

Market cap: NZ$35.34 Billion

As of December 2025 Quest Diagnostics has a market cap of NZ$35.34 Billion. This makes Quest Diagnostics the world's 1095th most valuable company by market cap according to our data. The market capitalization, commonly called market cap, is the total market value of a publicly traded company's outstanding shares and is commonly used to measure how much a company is worth.

Market cap history of Quest Diagnostics from 1997 to 2025

End of year Market Cap

Year	Marketcap	Change
2025	NZ$35.34 B	17%
2024	NZ$30.20 B	23.22%
2023	NZ$24.51 B	-12.64%
2022	NZ$28.06 B	-9.69%
2021	NZ$31.07 B	39.6%
2020	NZ$22.25 B	5.54%
2019	NZ$21.08 B	25.84%
2018	NZ$16.75 B	-11.34%
2017	NZ$18.90 B	2.76%
2016	NZ$18.39 B	23.75%
2015	NZ$14.86 B	20.6%
2014	NZ$12.32 B	31.37%
2013	NZ$9.38 B	-16.34%
2012	NZ$11.21 B	-4.44%
2011	NZ$11.73 B	-1.73%
2010	NZ$11.94 B	-21.62%
2009	NZ$15.23 B	-12.92%
2008	NZ$17.49 B	30.5%
2007	NZ$13.40 B	-8.11%
2006	NZ$14.59 B	-2.38%
2005	NZ$14.94 B	10.3%
2004	NZ$13.55 B	17.19%
2003	NZ$11.56 B	8.57%
2002	NZ$10.65 B	-35.77%
2001	NZ$16.58 B	11.19%
2000	NZ$14.91 B	477.71%
1999	NZ$2.58 B	154.3%
1998	NZ$1.01 B	16.41%
1997	NZ$0.87 B

End of Day market cap according to different sources

On Dec 6th, 2025 the market cap of Quest Diagnostics was reported to be:

NZ$35.15 Billion

by Nasdaq

NZ$35.34 Billion

by CompaniesMarketCap

Market capitalization for similar companies or competitors

Name	Marketcap	Market cap differencediff.	Country
LabCorp LH	NZ$37.18 B	5.21%	🇺🇸 USA
Psychemedics PMD	NZ$27.25 M	-99.92%	🇺🇸 USA
NeoGenomics NEO	NZ$2.66 B	-92.46%	🇺🇸 USA
Enzo Biochem ENZB	NZ$63.35 M	-99.82%	🇺🇸 USA
Translate Bio TBIO.defunct	NZ$4.89 B	-86.16%	🇺🇸 USA
Qiagen QGEN	NZ$17.65 B	-50.05%	🇳🇱 Netherlands

What is the market capitalization of a company?

The market capitalization sometimes referred as Marketcap, is the value of a publicly listed company.
In most cases it can be easily calculated by multiplying the share price with the amount of outstanding shares.

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Market capitalization of Quest Diagnostics (DGX)

Market cap: NZ$35.34 Billion