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Top 148 largest Companies in the Diagnostics & Research industry in the World by Market Cap

This is the list of the largest public listed companies in the Diagnostics & Research industry in the world by market capitalization with links to their reference stock.

World Diagnostics & Research Industry Analysis
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Top Diagnostics & Research Companies in the World as of Jul. 01, 2025

Rank Company Market Cap (USD) Country Sector Industry
1 Thermo Fisher Scientific Inc. $162.07 B United States US Healthcare US Diagnostics & Research
2 Danaher Corporation $144.92 B United States US Healthcare US Diagnostics & Research
3 Siemens Healthineers AG $64.17 B Germany German Healthcare German Diagnostics & Research
4 Lonza Group Ltd $49.67 B Switzerland Swiss Healthcare Swiss Diagnostics & Research
5 IDEXX Laboratories, Inc. $43.99 B United States US Healthcare US Diagnostics & Research
6 Agilent Technologies, Inc. $34.28 B United States US Healthcare US Diagnostics & Research
7 DexCom, Inc. $32.77 B United States US Healthcare US Diagnostics & Research
8 WuXi AppTec Co. Ltd $28.47 B China Chinese Healthcare Chinese Diagnostics & Research
9 IQVIA Holdings Inc. $28.41 B United States US Healthcare US Diagnostics & Research
10 Mettler-Toledo International Inc. $25.13 B United States US Healthcare US Diagnostics & Research
11 Koninklijke Philips N.V. $22.71 B Netherlands Dutch Healthcare Dutch Diagnostics & Research
12 Natera, Inc. $22.09 B United States US Healthcare US Diagnostics & Research
13 Laboratory Corporation of America Holdings $21.92 B United States US Healthcare US Diagnostics & Research
14 Waters Corporation $20.94 B United States US Healthcare US Diagnostics & Research
15 Quest Diagnostics Incorporated $19.71 B United States US Healthcare US Diagnostics & Research
16 BioMérieux SA $16.49 B France French Healthcare French Diagnostics & Research
17 Illumina, Inc. $15.88 B United States US Healthcare US Diagnostics & Research
18 Eurofins Scientific SE $12.74 B Luxembourg Luxembourg Healthcare Luxembourg Diagnostics & Research
19 ICON Public Limited Company $11.99 B Ireland Irish Healthcare Irish Diagnostics & Research
20 Revvity, Inc. $11.89 B United States US Healthcare US Diagnostics & Research
21 Sysmex Corp $10.84 B Japan Japanese Healthcare Japanese Diagnostics & Research
22 Qiagen N.V. $10.53 B Netherlands Dutch Healthcare Dutch Diagnostics & Research
23 Exact Sciences Corporation $10.07 B United States US Healthcare US Diagnostics & Research
24 Medpace Holdings, Inc. $9.37 B United States US Healthcare US Diagnostics & Research
25 Charles River Laboratories International, Inc. $7.72 B United States US Healthcare US Diagnostics & Research
26 Guardant Health, Inc. $6.26 B United States US Healthcare US Diagnostics & Research
27 Hangzhou Tigermed Consulting Co. Ltd $6.18 B China Chinese Healthcare Chinese Diagnostics & Research
28 DiaSorin S.p.A. $5.83 B Italy Italian Healthcare Italian Diagnostics & Research
29 Lantheus Holdings, Inc. $5.56 B United States US Healthcare US Diagnostics & Research
30 Syneos Health, Inc. $4.38 B

(July 1, 2023)

 United States US Healthcare US Diagnostics & Research

Top Diagnostics & Research Companies in the World as of Jul. 01, 2025

1. Thermo Fisher Scientific

Company Profile: Thermo Fisher Scientific Inc.
Market Cap (USD): $162.07 B
Country: United States
Sector: US Healthcare
Industry: US Diagnostics & Research

2. Danaher

Company Profile: Danaher Corporation
Market Cap (USD): $144.92 B
Country: United States
Sector: US Healthcare
Industry: US Diagnostics & Research

3. Siemens Healthineers AG

Company Profile: Siemens Healthineers AG
Market Cap (USD): $64.17 B
Country: Germany
Sector: German Healthcare
Industry: German Diagnostics & Research

4. Lonza Group Ltd

Company Profile: Lonza Group Ltd
Market Cap (USD): $49.67 B
Country: Switzerland
Sector: Swiss Healthcare
Industry: Swiss Diagnostics & Research

5. IDEXX Laboratories, Inc.

Company Profile: IDEXX Laboratories, Inc.
Market Cap (USD): $43.99 B
Country: United States
Sector: US Healthcare
Industry: US Diagnostics & Research

6. Agilent Technologies, Inc.

Company Profile: Agilent Technologies, Inc.
Market Cap (USD): $34.28 B
Country: United States
Sector: US Healthcare
Industry: US Diagnostics & Research

7. DexCom, Inc.

Company Profile: DexCom, Inc.
Market Cap (USD): $32.77 B
Country: United States
Sector: US Healthcare
Industry: US Diagnostics & Research

8. WuXi AppTec

Company Profile: WuXi AppTec Co. Ltd
Market Cap (USD): $28.47 B
Country: China
Sector: Chinese Healthcare
Industry: Chinese Diagnostics & Research

9. IQVIA Holdings Inc.

Company Profile: IQVIA Holdings Inc.
Market Cap (USD): $28.41 B
Country: United States
Sector: US Healthcare
Industry: US Diagnostics & Research

10. Mettler-Toledo International Inc.

Company Profile: Mettler-Toledo International Inc.
Market Cap (USD): $25.13 B
Country: United States
Sector: US Healthcare
Industry: US Diagnostics & Research

11. Koninklijke Philips N.V.

Company Profile: Koninklijke Philips N.V.
Market Cap (USD): $22.71 B
Country: Netherlands
Sector: Dutch Healthcare
Industry: Dutch Diagnostics & Research

12. Natera, Inc.

Company Profile: Natera, Inc.
Market Cap (USD): $22.09 B
Country: United States
Sector: US Healthcare
Industry: US Diagnostics & Research

13. Laboratory Corporation of America Holdings

Company Profile: Laboratory Corporation of America Holdings
Market Cap (USD): $21.92 B
Country: United States
Sector: US Healthcare
Industry: US Diagnostics & Research

14. Waters Corporation

Company Profile: Waters Corporation
Market Cap (USD): $20.94 B
Country: United States
Sector: US Healthcare
Industry: US Diagnostics & Research

15. Quest Diagnostics Incorporated

Company Profile: Quest Diagnostics Incorporated
Market Cap (USD): $19.71 B
Country: United States
Sector: US Healthcare
Industry: US Diagnostics & Research

16. BioMérieux SA

Company Profile: BioMérieux SA
Market Cap (USD): $16.49 B
Country: France
Sector: French Healthcare
Industry: French Diagnostics & Research

17. Illumina, Inc.

Company Profile: Illumina, Inc.
Market Cap (USD): $15.88 B
Country: United States
Sector: US Healthcare
Industry: US Diagnostics & Research

18. Eurofins Scientific SE

Company Profile: Eurofins Scientific SE
Market Cap (USD): $12.74 B
Country: Luxembourg
Sector: Luxembourg Healthcare
Industry: Luxembourg Diagnostics & Research

19. ICON Public Limited Company

Company Profile: ICON Public Limited Company
Market Cap (USD): $11.99 B
Country: Ireland
Sector: Irish Healthcare
Industry: Irish Diagnostics & Research

20. Revvity, Inc.

Company Profile: Revvity, Inc.
Market Cap (USD): $11.89 B
Country: United States
Sector: US Healthcare
Industry: US Diagnostics & Research

21. Sysmex Corp

Company Profile: Sysmex Corp
Market Cap (USD): $10.84 B
Country: Japan
Sector: Japanese Healthcare
Industry: Japanese Diagnostics & Research

22. Qiagen N.V.

Company Profile: Qiagen N.V.
Market Cap (USD): $10.53 B
Country: Netherlands
Sector: Dutch Healthcare
Industry: Dutch Diagnostics & Research

23. Exact Sciences Corporation

Company Profile: Exact Sciences Corporation
Market Cap (USD): $10.07 B
Country: United States
Sector: US Healthcare
Industry: US Diagnostics & Research

24. Medpace Holdings, Inc.

Company Profile: Medpace Holdings, Inc.
Market Cap (USD): $9.37 B
Country: United States
Sector: US Healthcare
Industry: US Diagnostics & Research

25. Charles River Laboratories International, Inc.

Company Profile: Charles River Laboratories International, Inc.
Market Cap (USD): $7.72 B
Country: United States
Sector: US Healthcare
Industry: US Diagnostics & Research

26. Guardant Health, Inc.

Company Profile: Guardant Health, Inc.
Market Cap (USD): $6.26 B
Country: United States
Sector: US Healthcare
Industry: US Diagnostics & Research

27. Hangzhou Tigermed Consulting Co. Ltd

Company Profile: Hangzhou Tigermed Consulting Co. Ltd
Market Cap (USD): $6.18 B
Country: China
Sector: Chinese Healthcare
Industry: Chinese Diagnostics & Research

28. DiaSorin S.p.A.

Company Profile: DiaSorin S.p.A.
Market Cap (USD): $5.83 B
Country: Italy
Sector: Italian Healthcare
Industry: Italian Diagnostics & Research

29. Lantheus Holdings, Inc.

Company Profile: Lantheus Holdings, Inc.
Market Cap (USD): $5.56 B
Country: United States
Sector: US Healthcare
Industry: US Diagnostics & Research

30. Syneos Health, Inc.

Company Profile: Syneos Health, Inc.
Market Cap (USD): $4.38 B (July 1, 2023)
Country: United States
Sector: US Healthcare
Industry: US Diagnostics & Research

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