When did WAT join the S&P 500?

Waters Corporation joined the S&P 500 index on 2002-01-02.

What sector is WAT in?

WAT is in the Health Care sector, Life Sciences Tools & Services industry.

WAT — Waters Corporation

Name: WAT Institutional Holdings (13F) — 2026Q1
Creator: SEC EDGAR
License: https://www.sec.gov/data

Life Sciences Tools & Services · Health Care

S&P 500 Timeline

2002-01-02Joined S&P 500

Waters Corporation is engaged in providing workflow solutions involving liquid chromatography, mass spectrometry and thermal analysis. It operates through the Waters and TA (TA Instruments) segments. The Waters segment consists of liquid chromatography instruments, mass spectrometry and precision chemical consumables and services. The TA segment's products and services include thermal analysis, rheometer and calorimeter systems, as well as service sales.

Key Facts

Status	Active
Sector	Health Care
Industry	Life Sciences Tools & Services
Joined	2002-01-02
Tenure	24 yrs

Industry Peers

A CRL DHR IQV MTD TECH TMO

Sector Peers

A ABBV ABT ALGN AMGN BAX BDX BIIB BMY BSX

Institutional Holdings (13F)

1,183 institutions hold WAT, totaling 121.8M shares ($31.9B) · As of 2026Q1

Rank	Institution	Shares	Value
1	VANGUARD CAPITAL MANAGEMENT LLC	14.2M	$3.8B
2	BlackRock, Inc.	10.0M	$2.6B
3	MASSACHUSETTS FINANCIAL SERVICES CO /MA/	4.6M	$2.1B
4	VANGUARD PORTFOLIO MANAGEMENT LLC	4.8M	$1.4B
5	STATE STREET CORP	4.8M	$1.3B
6	JANUS HENDERSON GROUP PLC	3.3M	$976M
7	Fundsmith LLP	3.2M	$957M
8	First Eagle Investment Management, LLC	3.2M	$938M
9	MORGAN STANLEY	3.2M	$866M
10	ALLIANCEBERNSTEIN L.P.	2.1M	$804M

View all holders →

Data source: Wikipedia · CC BY-SA 4.0 · SEC EDGAR 13F · Updated 2026-07-10