Waters Corporation
Waters Corporation (WAT) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · WAT · as of Sep 30, 2025
Ownership Breakdown
779
Institutional Holders
$17.18B
Total Inst. Value
▼ $3.22B vs Q2
65.18M
Shares Outstanding
freeFloat 99.88%
57.29M
13F Shares Held
▼ 1.15M vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
WAT largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
VANGUARD GROUP INC laboratory analytical instruments | 7.66M | 12.87% | 12.87% | $2.30T | Nov 7, 2025 | ▲ 246.1K |
BLACKROCK, INC. laboratory analytical instruments | 6.07M | 10.19% | 10.19% | $1.82T | Nov 12, 2025 | ▼ 497.2K |
FUNDSMITH LLP laboratory analytical instruments | 3.96M | 6.65% | 6.65% | $1.19T | Nov 14, 2025 | ▲ 347.1K |
MASSACHUSETTS FINANCIAL SERVICES CO /MA/ laboratory analytical instruments | 2.69M | 4.52% | 4.52% | $806.40B | Oct 29, 2025 | ▲ 825.7K |
STATE STREET CORP laboratory analytical instruments | 2.68M | 4.50% | 4.50% | $803.35B | Nov 14, 2025 | ▲ 3.3K |
ALLIANCEBERNSTEIN L.P. laboratory analytical instruments | 2.08M | 3.50% | 3.50% | $624.94B | Nov 14, 2025 | ▼ 1.94M |
GEODE CAPITAL MANAGEMENT, LLC laboratory analytical instruments | 1.58M | 2.66% | 2.66% | $473.26B | Nov 12, 2025 | ▲ 32.4K |
MAWER INVESTMENT MANAGEMENT LTD. laboratory analytical instruments | 1.55M | 2.61% | 2.61% | $465.01B | Nov 4, 2025 | ▲ 1.07M |
INVESCO LTD. laboratory analytical instruments | 1.47M | 2.47% | 2.47% | $441.45B | Nov 13, 2025 | ▲ 359.6K |
FUNDSMITH INVESTMENT SERVICES LTD. laboratory analytical instruments | 1.36M | 2.28% | 2.28% | $406.63B | Nov 14, 2025 | ▲ 135.5K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
30
Increased
+5.31M shares3
New Positions
first time holders17
Decreased
−4.46M shares0
Sold Out
fully exitedNet shares change (top 50)
+852.2K
+5.31M / −4.46M
Net new holders
+16
3 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
WAT insider trading · insider activity
Source: SEC Form 4
Insiders have been net buyers of shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
0
Buy transactions
2
Sell transactions
0.00
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Chaubal Amol SVP & Chief Financial Officer | May 12, 2026 | Tax Withhold | 239 | $352.21 | $84.2K | 7.6K | Form 4 ↗ |
Bennett Jianqing SVP Waters Adv. Diagnostics | Apr 6, 2026 | Tax Withhold | 302 | $304.09 | $91.8K | 6.5K | Form 4 ↗ |
Jiang Wei director | Mar 31, 2026 | Award | 64.06 | — | — | 3.5K | Form 4 ↗ |
Knight Heather director | Mar 31, 2026 | Award | 68.44 | — | — | 1.2K | Form 4 ↗ |
Jiang Wei director | Mar 16, 2026 | Purchase | 500 | $289.46 | $144.7K | 3.4K | Form 4 ↗ |
FEARON RICHARD H director | Mar 6, 2026 | Purchase | 1,000 | $306.34 | $306.3K | 3.3K | Form 4 ↗ |
Batra Udit President and CEO | Mar 2, 2026 | Tax Withhold | 3,417 | $307.23 | $1.05M | 33.1K | Form 4 ↗ |
Chaubal Amol SVP & Chief Financial Officer | Mar 2, 2026 | Tax Withhold | 709 | $307.23 | $217.8K | 7.8K | Form 4 ↗ |
Bennett Jianqing SVP Waters Adv. Diagnostics | Mar 2, 2026 | Tax Withhold | 410 | $307.23 | $126.0K | 6.8K | Form 4 ↗ |
Carpio Robert L III SVP Waters Analytical Sciences | Feb 25, 2026 | Award | 4,884 | $319.44 | $1.56M | 4.9K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Waters Corporation (WAT) is primarily owned by institutional investors, who hold approximately 87.9% of total shares outstanding. Company insiders own approximately 0.12%, while retail and public investors account for the remaining 11.98%.
The largest institutional shareholder of Waters Corporation is VANGUARD GROUP INC, holding approximately 7.66 million shares — equal to 12.87% of outstanding shares — as of September 30, 2025.
A total of 779 institutional investors currently hold WAT stock, with a combined institutional value of approximately $17.18 billion as of the most recent 13F filing period.
Frequently asked questions
WAT ownershipWaters Corporation (WAT) is primarily owned by institutional investors, who hold approximately 87.9% of shares. The largest shareholder is VANGUARD GROUP INC with a 12.87% stake. Company insiders hold 0.12%. Data sourced from SEC Form 13F as of September 30, 2025.