Waters Corp /De/ (WAT) Institutional Ownership

Ownership Summary

Waters Corp /De/ (NYSE:WAT) currently has 314 active institutional owners and shareholders as of today (December 2025), that have filed 13F forms with the Securities Exchange Commission (SEC).

• Waters saw its institutional ownership percentage fell to 24.1% in December 2025 from 96.3% in September 2025.
• On a quarter-over-quarter basis, institutional holdings shifted by -2.16%, with a year-over-year a decrease of 58.24% in the count of filers.
• Of these 314 institutional investors, 135 increased their holdings in Waters, while 104 of them reduced positions, and 75 investors maintained their exposure.
• The total number of shares held by institutions in Waters decreased to 14.35Mn as of December 2025, a net change of down by 316.15K shares quarter on quarter, and down 42.90Mn shares year over year.
• The top institutional stake in Waters as of December 31, 2025 belongs to VANGUARD GROUP INC, which owns 7.47Mn shares, or 12.53% of the company.
• Among the most significant buyers of Waters during December 2025 were UBS Group AG (151.10K), AustralianSuper Pty Ltd (46.83K), Freemont Management S.A. (41.60K), SG Americas Securities, LLC (31.46K), NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO (17.64K).
• Leading sellers of Waters stock in December 2025 included Robeco Schweiz AG (215.71K), VANGUARD GROUP INC (186.96K), Pictet Asset Management Holding SA (78.59K), MASSACHUSETTS FINANCIAL SERVICES CO /MA/ (64.98K), Impax Asset Management Group plc (31.30K).
• The top 10 institutional holders of Waters for the quarter ending December 2025 included VANGUARD GROUP INC (7.47Mn), MASSACHUSETTS FINANCIAL SERVICES CO /MA/ (2.62Mn), PRINCIPAL FINANCIAL GROUP INC (870.97K), UBS Group AG (355.95K), Madison Asset Management, LLC (293.16K), Impax Asset Management Group plc (232.25K), Sumitomo Mitsui Trust Group, Inc. (136.27K), Robeco Schweiz AG (132.09K), Mitsubishi UFJ Asset Management Co., Ltd. (125.58K), Boston Trust Walden Corp (112.41K).