Who owns Waters (WAT)
Which tracked institutional funds hold WAT, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See WAT company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
372 tracked funds added or opened WAT while 179 trimmed or exited it between 2026-Q1 and 2026-Q2 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
WAT’s largest tracked holder by dollar value, BlackRock, Inc., sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.1% of theirs — a 0.0pp gap the other way — the median holder sizes WAT more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in WAT divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2026-Q1 and 2026-Q2, across 1098 tracked filers holding WAT, 491 increased or opened the position and 672 reduced or closed it; over the same quarter, there were no open-market insider Form 4s.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in WAT between the 2026-Q1 and 2026-Q2 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 44
- Jupiter Topco LLC$624M
- Capital Research Global Investors$134M
- XN LP$72M
- LMR Partners LLP$55M
- ARMISTICE CAPITAL, LLC$28M
- Rivermont Capital Management LP$25M
Full exits 109
- T. Rowe Price Investment Management, Inc.$1.4B
- JANUS HENDERSON GROUP PLC$488M
- AKO CAPITAL LLP$243M
- Amundi$129M
- NATIXIS ADVISORS, LLC$77M
- SG Americas Securities, LLC$34M
Largest adds
- BlackRock, Inc.$1.3B
- Invesco Ltd.$674M
- VANGUARD CAPITAL MANAGEMENT LLC$506M
- PRICE T ROWE ASSOCIATES INC /MD/$482M
- MASSACHUSETTS FINANCIAL SERVICES CO /MA/$467M
- SCHRODER INVESTMENT MANAGEMENT GROUP$380M
Largest trims
- NORGES BANK$231M
- Fundsmith LLP$104M
- HARRIS ASSOCIATES L P$79M
- Clearbridge Investments, LLC$78M
- MANUFACTURERS LIFE INSURANCE COMPANY, THE$78M
- Impax Asset Management Group plc$77M
Institutional holders
One row per tracked fund, most shares held first (every row is from one quarter; reported value breaks ties). “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding.
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| BlackRock, Inc. added | 8,484,939 | $3.2B | 9.8% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC added | 6,415,552 | $2.4B | 7.4% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC trimmed | 4,740,524 | $1.8B | 5.5% | 2026-Q2 |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ trimmed | 4,625,035 | $2.5B | 7.8% | 2026-Q2 |
| STATE STREET CORP added | 4,382,008 | $1.6B | 5.1% | 2026-Q2 |
| Invesco Ltd. added | 3,494,267 | $1.3B | 4.0% | 2026-Q2 |
| ALLIANCEBERNSTEIN L.P. added | 2,694,590 | $802M | 2.5% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC trimmed | 2,636,146 | $985M | 3.0% | 2026-Q2 |
| Fundsmith LLP trimmed | 2,273,632 | $853M | 2.6% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 2,177,958 | $817M | 2.5% | 2026-Q2 |
| JPMORGAN CHASE & CO added | 2,158,391 | $796M | 2.5% | 2026-Q2 |
| Jupiter Topco LLC new | 1,663,601 | $624M | 1.9% | 2026-Q2 |
| VIKING GLOBAL INVESTORS LP added | 1,662,140 | $623M | 1.9% | 2026-Q2 |
| WELLINGTON MANAGEMENT GROUP LLP added | 1,373,150 | $515M | 1.6% | 2026-Q2 |
| First Eagle Investment Management, LLC trimmed | 1,335,108 | $501M | 1.5% | 2026-Q2 |
| SCHRODER INVESTMENT MANAGEMENT GROUP added | 1,264,226 | $474M | 1.5% | 2026-Q2 |
| Mawer Investment Management Ltd. trimmed | 1,216,947 | $456M | 1.4% | 2026-Q2 |
| PRINCIPAL FINANCIAL GROUP INC added | 1,114,092 | $418M | 1.3% | 2026-Q2 |
| MORGAN STANLEY trimmed | 1,097,302 | $412M | 1.3% | 2026-Q2 |
| NORTHERN TRUST CORP trimmed | 1,032,726 | $387M | 1.2% | 2026-Q2 |
| D. E. Shaw & Co., Inc. trimmed | 948,639 | $356M | 1.1% | 2026-Q2 |
| FMR LLC added | 924,742 | $347M | 1.1% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC added | 894,660 | $336M | 1.0% | 2026-Q2 |
| Veritas Asset Management LLP trimmed | 851,624 | $319M | 1.0% | 2026-Q2 |
| Holocene Advisors, LP trimmed | 847,774 | $318M | 1.0% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ trimmed | 839,592 | $315M | 1.0% | 2026-Q2 |
| FUNDSMITH INVESTMENT SERVICES LTD. trimmed | 837,764 | $314M | 1.0% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 816,512 | $306M | 0.9% | 2026-Q2 |
| FRANKLIN RESOURCES INC added | 809,339 | $304M | 0.9% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP trimmed | 801,084 | $300M | 0.9% | 2026-Q2 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC trimmed | 774,955 | $291M | 0.9% | 2026-Q2 |
| Allspring Global Investments Holdings, LLC added | 774,836 | $293M | 0.9% | 2026-Q2 |
| UBS Group AG added | 694,851 | $261M | 0.8% | 2026-Q2 |
| Legal & General Group Plc added | 690,148 | $259M | 0.8% | 2026-Q2 |
| VOYA INVESTMENT MANAGEMENT LLC added | 653,967 | $245M | 0.8% | 2026-Q2 |
| NEUBERGER BERMAN GROUP LLC added | 638,786 | $239M | 0.7% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC added | 584,254 | $219M | 0.7% | 2026-Q2 |
| MARSHALL WACE, LLP added | 581,332 | $218M | 0.7% | 2026-Q2 |
| Artisan Partners Limited Partnership added | 560,753 | $210M | 0.6% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO trimmed | 551,398 | $207M | 0.6% | 2026-Q2 |
| Bank of New York Mellon Corp trimmed | 503,214 | $189M | 0.6% | 2026-Q2 |
| Focus Partners Wealth added | 485,602 | $182M | 0.6% | 2026-Q2 |
| Findlay Park Partners LLP trimmed | 451,925 | $169M | 0.5% | 2026-Q2 |
| Point72 Asset Management, L.P. added | 444,225 | $167M | 0.5% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC trimmed | 436,388 | $164M | 0.5% | 2026-Q2 |
| BECK MACK & OLIVER LLC added | 434,149 | $163M | 0.5% | 2026-Q2 |
| DEUTSCHE BANK AG\ trimmed | 416,850 | $156M | 0.5% | 2026-Q2 |
| HSBC HOLDINGS PLC trimmed | 397,310 | $149M | 0.5% | 2026-Q2 |
| Liontrust Investment Partners LLP added | 358,979 | $135M | 0.4% | 2026-Q2 |
| Capital Research Global Investors new | 358,198 | $134M | 0.4% | 2026-Q2 |
| LONDON CO OF VIRGINIA trimmed | 340,771 | $128M | 0.4% | 2026-Q2 |
| JONES FINANCIAL COMPANIES LLLP added | 290,936 | $109M | 0.3% | 2026-Q2 |
| Nuveen, LLC added | 290,613 | $109M | 0.3% | 2026-Q2 |
| TD Asset Management Inc added | 287,436 | $108M | 0.3% | 2026-Q2 |
| Madison Asset Management, LLC added | 279,856 | $105M | 0.3% | 2026-Q2 |
| Swiss National Bank trimmed | 277,334 | $104M | 0.3% | 2026-Q2 |
| FIRST TRUST ADVISORS LP trimmed | 272,470 | $102M | 0.3% | 2026-Q2 |
| First Pacific Advisors, LP added | 268,164 | $101M | 0.3% | 2026-Q2 |
| ROYAL BANK OF CANADA added | 267,531 | $100M | 0.3% | 2026-Q2 |
| Mitsubishi UFJ Asset Management Co., Ltd. added | 239,613 | $90M | 0.3% | 2026-Q2 |
| Epoch Investment Partners, Inc. added | 237,909 | $89M | 0.3% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS added | 235,147 | $88M | 0.3% | 2026-Q2 |
| Sumitomo Mitsui Trust Group, Inc. trimmed | 214,145 | $80M | 0.2% | 2026-Q2 |
| CITIGROUP INC added | 213,227 | $80M | 0.2% | 2026-Q2 |
| Vanguard Global Advisers, LLC trimmed | 211,870 | $79M | 0.2% | 2026-Q2 |
| COOKE & BIELER LP trimmed | 209,736 | $79M | 0.2% | 2026-Q2 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE trimmed | 209,540 | $79M | 0.2% | 2026-Q2 |
| LPL Financial LLC trimmed | 199,677 | $75M | 0.2% | 2026-Q2 |
| BRISTOL JOHN W & CO INC /NY/ trimmed | 197,905 | $74M | 0.2% | 2026-Q2 |
| XN LP new | 193,146 | $72M | 0.2% | 2026-Q2 |
| FULLER & THALER ASSET MANAGEMENT, INC. added | 190,721 | $72M | 0.2% | 2026-Q2 |
| STATE FARM MUTUAL AUTOMOBILE INSURANCE CO | 189,881 | $71M | 0.2% | 2026-Q2 |
| VANGUARD ASSET MANAGEMENT, Ltd added | 189,305 | $71M | 0.2% | 2026-Q2 |
| NORGES BANK trimmed | 188,334 | $71M | 0.2% | 2026-Q2 |
| SEI INVESTMENTS CO trimmed | 185,985 | $70M | 0.2% | 2026-Q2 |
| Newport Trust Company, LLC trimmed | 182,722 | $69M | 0.2% | 2026-Q2 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP added | 177,334 | $67M | 0.2% | 2026-Q2 |
| NORDEA INVESTMENT MANAGEMENT AB trimmed | 171,186 | $63M | 0.2% | 2026-Q2 |
| LGT Group Foundation added | 170,904 | $64M | 0.2% | 2026-Q2 |
| Clearbridge Investments, LLC trimmed | 170,887 | $64M | 0.2% | 2026-Q2 |
| AMERICAN CENTURY COMPANIES INC trimmed | 169,474 | $64M | 0.2% | 2026-Q2 |
| National Pension Service added | 168,799 | $63M | 0.2% | 2026-Q2 |
| RHUMBLINE ADVISERS trimmed | 168,771 | $63M | 0.2% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN trimmed | 168,498 | $63M | 0.2% | 2026-Q2 |
| CANADA PENSION PLAN INVESTMENT BOARD added | 162,120 | $61M | 0.2% | 2026-Q2 |
| Robeco Schweiz AG added | 152,195 | $57M | 0.2% | 2026-Q2 |
| LMR Partners LLP new | 147,305 | $55M | 0.2% | 2026-Q2 |
| BARCLAYS PLC trimmed | 146,573 | $55M | 0.2% | 2026-Q2 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM trimmed | 144,662 | $54M | 0.2% | 2026-Q2 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. added | 144,556 | $54M | 0.2% | 2026-Q2 |
| BALYASNY ASSET MANAGEMENT L.P. added | 138,443 | $52M | 0.2% | 2026-Q2 |
| Aberdeen Group plc added | 138,104 | $52M | 0.2% | 2026-Q2 |
| CITADEL ADVISORS LLC trimmed | 135,686 | $51M | 0.2% | 2026-Q2 |
| MILFORD FUNDS LTD added | 135,437 | $51M | 0.2% | 2026-Q2 |
| California Public Employees Retirement System trimmed | 132,969 | $50M | 0.2% | 2026-Q2 |
| Assenagon Asset Management S.A. added | 130,109 | $49M | 0.2% | 2026-Q2 |
| ENVESTNET ASSET MANAGEMENT INC trimmed | 112,356 | $42M | 0.1% | 2026-Q2 |
| Empyrean Capital Partners, LP added | 105,500 | $40M | 0.1% | 2026-Q2 |
| SCHAPER BENZ & WISE INVESTMENT COUNSEL INC/WI trimmed | 104,525 | $39M | 0.1% | 2026-Q2 |
| Universal- Beteiligungs- und Servicegesellschaft mbH trimmed | 101,873 | $38M | 0.1% | 2026-Q2 |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.