# WATERS CORP (WAT) — Institutional Ownership

Source: SEC EDGAR 13F filings, congressional STOCK Act disclosures, SEC Form 4 insider transactions.
CUSIP: 941848103
Page URL: https://superinvestorclub.com/stock/WAT
Last updated: 2026-07-08T11:37:39.198Z

## Summary

As of the most recent 13F filing period, WATERS CORP (WAT) is held by 7 tracked superinvestors with an aggregate position value of $1.42B representing 032120751256462267472387661547958816929 shares.

## Top institutional holders (7)

| Rank | Manager | Fund | Shares | Value | % of Portfolio | Period |
|------|---------|------|--------|-------|----------------|--------|
| 1 | [Terry Smith](https://superinvestorclub.com/manager/23) | Fundsmith | 3212075 | $956.6M | 7.46% | 2026-03-31 |
| 2 | [Andreas Halvorsen](https://superinvestorclub.com/manager/59) | Viking Global Investors | 1256462 | $374.2M | 1.05% | 2026-03-31 |
| 3 | [Steven Romick](https://superinvestorclub.com/manager/289) | First Pacific Advisors | 267472 | $79.7M | 1.12% | 2026-03-31 |
| 4 | [Jensen Investment Management](https://superinvestorclub.com/manager/93) | Jensen Investment Management | 38766 | $11.5M | 0.23% | 2026-03-31 |
| 5 | [FPA Queens Road](https://superinvestorclub.com/manager/97) | Bragg Financial Advisors | 1547 | $460,697 | 0.01% | 2026-03-31 |
| 6 | [Mairs & Power](https://superinvestorclub.com/manager/92) | Mairs & Power | 958 | $285,590 | 0.00% | 2026-03-31 |
| 7 | [AKO Capital](https://superinvestorclub.com/manager/67) | AKO Capital | 816929 | $243,281 | 4.76% | 2026-03-31 |

## Ownership history (quarter-over-quarter)

- 2024-03-31: 3 holders, $1.59B aggregate, 037662518387631071 shares
- 2024-06-30: 3 holders, $1.32B aggregate, 036544508786522044 shares
- 2024-09-30: 2 holders, $1.60B aggregate, 03645999790207 shares
- 2024-12-31: 2 holders, $1.65B aggregate, 03634522815379 shares
- 2025-03-31: 3 holders, $1.68B aggregate, 0361319788721544332 shares
- 2025-06-30: 3 holders, $1.55B aggregate, 0360840778734643936 shares
- 2025-09-30: 4 holders, $1.44B aggregate, 03955498806948439361482 shares
- 2025-12-31: 3 holders, $1.65B aggregate, 0355797875345538736 shares
- 2026-03-31: 8 holders, $1.42B aggregate, 03212075125646226747238766154795881692910000 shares

## Recent congressional trades (18)

- 2025-12-08: Julia Letlow (Republican-LA) purchase $1,001 - $15,000
- 2025-08-26: Gil Cisneros (Democrat-CA) purchase $1,001 - $15,000
- 2025-08-13: Gil Cisneros (Democrat-CA) purchase $1,001 - $15,000
- 2025-08-12: Gil Cisneros (Democrat-CA) purchase $1,001 - $15,000
- 2025-07-22: Lisa McClain (Republican-MI) sale $1,001 - $15,000
- 2025-07-16: Lisa McClain (Republican-MI) purchase $1,001 - $15,000
- 2025-07-01: Ro Khanna (Democrat-CA) sale $1,001 - $15,000
- 2025-06-23: Ro Khanna (Democrat-CA) sale $1,001 - $15,000
- 2025-05-28: Ro Khanna (Democrat-CA) purchase $1,001 - $15,000
- 2025-05-15: Rob Bresnahan (Republican-PA) purchase $1,001 - $15,000
- 2025-04-08: Rob Bresnahan (Republican-PA) sale $1,001 - $15,000
- 2025-02-25: Rob Bresnahan (Republican-PA) purchase $1,001 - $15,000
- 2025-02-19: Ro Khanna (Democrat-CA) sale $1,001 - $15,000
- 2025-01-17: Ro Khanna (Democrat-CA) purchase $1,001 - $15,000
- 2024-11-19: Julia Letlow (Republican-LA) sale $1,001 - $15,000

## Recent insider transactions (0)


## Citation

When citing, use: "WATERS CORP (WAT) institutional ownership data via Superinvestor (https://superinvestorclub.com/stock/WAT), aggregating SEC 13F, Form 4, and congressional disclosures."