WAT — WATERS CORP /DE/Today's name, from the SEC's present-day ticker list — a present-day mapping, not the name as of each filing.

Congress trades
27
all time
Members · 12m
5
2 buys · 3 sells · by trade date
Latest filing
09-01
2026-09-01
Rows filed past the STOCK Act's 45-day window, stated on the row, never editorialised; both dates and the receipt stay on every row.
4
13F holders
919
top 500 listed · 2026-03-31
Congress: statutory ranges, filed up to 45 days after the trade · 13F: quarter-end snapshots, filed up to 45 days lateras of 2026-10-29
Congress 27Institutional 500

Congress · disclosure timeline

By trade date · 24 months · 17 rows ▲ buy, ▼ sell; height = lower bound (log scale). Trade date, not filing date — the filing lag is in the table below.

17 dated disclosures in the window, placed by trade date; magnitudes are the disclosed lower bounds, against gridlines at $15K, $250K, $5M.

Members active in WAT

12 months · most active first Rows = number of disclosures, not dollars. Net = lower bound of the net range. Committees as of each member's latest trade in the window (roster snapshot 2026-10-29).
Members disclosing WAT in the trailing 12 months
MemberRowsNet disclosed flow for this ticker: purchases minus sales, computed as a net range on the disclosed amounts. A lower bound is provable, never a point.Number of committees the member sat on as of their latest trade date in the window, from the cc0-legislators roster snapshot. Context, never an allegation; jurisdiction overlap needs the sector join.
Kevin Hern R–OK-12−$15.0K to −$1.0K1
Thomas H. Kean, Jr. R–NJ-72−$30.0K to −$2.0K2
Debbie Dingell D–MI-61$02
Gilbert Ray Cisneros, Jr. D–CA-311$1.0K to $15.0K2
Julia Letlow R–LA-51$1.0K to $15.0K2

5 members

Congressional disclosures

Newest filed firstAll 27 rows ↗
Latest congressional filings mentioning WAT
FiledMemberSide · OwnerTraded · LagAmountRange · FlagsSrc
2026-09-01Kevin Hern R–OK-1SELL JT (jointly owned)Traded 08-13 +19d$1K–$15K
2026-08-05Tommy Tuberville R–ALSELL JT (jointly owned)Traded 2024-05-03 LATE·824d$1K–$15Kamendment pending
2026-04-13Thomas H. Kean, Jr. R–NJ-7SELL partial (partial sale)Traded 03-10 +34d$1K–$15K
2026-04-07Gilbert Ray Cisneros, Jr. D–CA-31BUYTraded 03-18 +20d$1K–$15K
2026-03-18Thomas H. Kean, Jr. R–NJ-7SELL partial (partial sale)Traded 02-13 +33d$1K–$15K
2026-03-06Kevin Hern R–OK-1EXCHANGE JT (jointly owned)Traded 02-09 +25d$1K–$15K
2026-02-23Debbie Dingell D–MI-6EXCHANGETraded 02-10 +13d$1K–$15K
2026-01-13Julia Letlow R–LA-5BUYTraded 2025-12-08 +36d$1K–$15K
2026-01-13Julia Letlow R–LA-5SELLTraded 2024-11-19 LATE·420d$1K–$15K
2026-01-13Julia Letlow R–LA-5BUYTraded 2024-10-23 LATE·447d$1K–$15K

13F holders · Quarter ended 2026-03-31Newest filing in this build: 2026-07-31. Per-row filing dates are on each receipt. · longs only

All holders ↗
Top institutional holders of WAT for quarter 2026-03-31, 1–25 of 919 holders
#FilerValueSecuritiesFlagsderived by Public Filings from this build's reviewed ticker-mapping holders list for this share class; that list carries each holder's share count, share change and filed date (the full holders view shows them), but no document links — the EDGAR link opens the filer's 13F list·§
1BlackRock, Inc.$2.5B1
derived ·§ EDGAR ↗
2MASSACHUSETTS FINANCIAL SERVICES CO /MA/$2.1B1
derived ·§ EDGAR ↗
3VANGUARD CAPITAL MANAGEMENT LLC$1.9B1
derived ·§ EDGAR ↗
4VANGUARD PORTFOLIO MANAGEMENT LLC$1.4B1
derived ·§ EDGAR ↗
5STATE STREET CORP$1.3B1
derived ·§ EDGAR ↗
6Fundsmith LLP$957M1
derived ·§ EDGAR ↗
7ALLIANCEBERNSTEIN L.P.$804M1
derived ·§ EDGAR ↗
8GEODE CAPITAL MANAGEMENT, LLC$785M1
derived ·§ EDGAR ↗
9Invesco Ltd.$646M1
derived ·§ EDGAR ↗
10Janus Henderson Group Ltd.$488M1
derived ·§ EDGAR ↗
11First Eagle Investment Management, LLC$469M1
derived ·§ EDGAR ↗
12Mawer Investment Management Ltd.$418M1
derived ·§ EDGAR ↗
13VIKING GLOBAL INVESTORS LP$374M1
derived ·§ EDGAR ↗
14MORGAN STANLEY$364M1
derived ·§ EDGAR ↗
15Veritas Asset Management LLP$358M1
derived ·§ EDGAR ↗
16FUNDSMITH INVESTMENT SERVICES LTD.$327M1
derived ·§ EDGAR ↗
17NORTHERN TRUST CORP$310M1
derived ·§ EDGAR ↗
18D. E. Shaw & Co., Inc.$305M1
derived ·§ EDGAR ↗
19PRINCIPAL FINANCIAL GROUP INC$304M1
derived ·§ EDGAR ↗
20Holocene Advisors, LP$273M1
derived ·§ EDGAR ↗
21BANK OF AMERICA CORP /DE/$251M1
derived ·§ EDGAR ↗
22DIMENSIONAL FUND ADVISORS LP$243M1
derived ·§ EDGAR ↗
23WELLINGTON MANAGEMENT GROUP LLP$242M1
derived ·§ EDGAR ↗
24UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC$237M1
derived ·§ EDGAR ↗
25CHARLES SCHWAB INVESTMENT MANAGEMENT INC$230M1
derived ·§ EDGAR ↗
Show the top 500 of 919 holders
Truncated by Public Filings. Top 500 of 919 holders shown; the rest are on EDGAR. Method ↗

Crowding — not available in this build. No holder rows for the selected period, so no percentile can be ranked.

Congress ↔ notable managers · WAT

Congress · last 90 days

Buyers
0 — —
Sellers
2 Kevin Hern R–OK-1, Tommy Tuberville R–AL $2K–$30K

filed 2026-07-31 → 2026-10-29 · statutory ranges

Notable managers · quarter ended 2026-03-31

Trimming
1 Fundsmith $957M held

by shares · $ = value heldNEW + ADD vs TRIM + EXIT, by share count. $ = reported value now, not the change. · WATERS CORP

Merged timeline of congressional filings and notable-manager moves on WAT
DateWhoChangeSize
2026-09-01Kevin Hern CongressSELL$1K–$15K
2026-08-05Tommy Tuberville CongressSELL$1K–$15K
2026-05-15Viking Global Investors 13FNEW+1,256,462 sh
2026-05-15Gotham Asset Management 13FADD+1,458 sh
2026-05-15Fundsmith 13FTRIM−345,903 sh

5 newest, by filing date · 13F rows are quarter-end snapshots, not trades

Congress vs filers

12 months
Congress net (rows)2 buy / 3 sell
Congress net ($ bound)−$43.0K to $27.0K
Filersnot computedThe filer side needs per-issuer quarter-over-quarter actions, which the published aggregate does not carry for this issuer. Convergence and divergence are stated only when both sides are computed.