Institutional shares held 57.8 Million
177K calls
279K puts
Total value of holdings $21.9B
$67M calls
$106M puts
Market Cap $22.7B
59,875,900 Shares Out.
Institutional ownership 96.52%
# of Institutions 853


Latest Institutional Activity in WAT

Top Purchases

Q4 2025
Gilbert & Cook, Inc. Shares Held: 702 ($266K)
Q4 2025
Sagespring Wealth Partners, LLC Shares Held: 582 ($221K)
Q4 2025
Gamma Investing LLC Shares Held: 1.74K ($659K)
Q4 2025
Park Avenue Securities LLC Shares Held: 3.01K ($1.14M)
Q4 2025
Rosenberg Matthew Hamilton Shares Held: 359 ($136K)

Top Sells

Q4 2025
Union Bancaire Privee, Ubp Sa Shares Held: 4.3K ($1.63M)
Q4 2025
Baldwin Brothers LLC Shares Held: 22.8K ($8.65M)
Q4 2025
Massmutual Trust CO Fsb Shares Held: 2.2K ($835K)
Q4 2025
Armstrong Henry H Associates Inc Shares Held: 4.14K ($1.57M)
Q3 2025
Alliancebernstein L.P. Shares Held: 2.08M ($791M)

About WAT

Waters Corporation, a specialty measurement company, provides analytical workflow solutions in Asia, the Americas, and Europe. It operates through two segments, Waters and TA. The company designs, manufactures, sells, and services high and ultra-performance liquid chromatography, as well as mass spectrometry (MS) technology systems and support products, including chromatography columns, other consumable products, and post-warranty service plans. It also designs, manufactures, sells, and services thermal analysis, rheometry, and calorimetry instruments; and develops and supplies software-based products that interface with its instruments, as well as other manufacturers' instruments. Its MS technology instruments are used in drug discovery and development comprising clinical trial testing, the analysis of proteins in disease processes, nutritional safety analysis, and environmental testing. The company offers thermal analysis, rheometry, and calorimetry instruments for use in predicting the suitability and stability of fine chemicals, pharmaceuticals, water, polymers, metals, and viscous liquids for various industrial, consumer good, and healthcare products, as well as for life science research. Its products are used by life science, pharmaceutical, biochemical, industrial, nutritional safety, environmental, academic, and governmental customers working in research and development, quality assurance, and other laboratory applications. Waters Corporation was founded in 1958 and is headquartered in Milford, Massachusetts.


Insider Transactions at WAT

Insider Transaction List

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Date Insider Transaction Ownership Type Shares Traded Value / Price
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Last 12 Months Summary

Buy / Acquisition
29.9K Shares
From 14 Insiders
Grant, award, or other acquisition 26.2K shares
Exercise of conversion of derivative security 3.76K shares
Sell / Disposition
8.83K Shares
From 5 Insiders
Payment of exercise price or tax liability 8.83K shares

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