Who owns Watts Water Technologies (WTS)
Which tracked institutional funds hold WTS, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See WTS 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
238 tracked funds added or opened WTS while 87 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
WTS’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 0.0% of theirs — a 0.0pp gap the other way — the median holder sizes WTS more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in WTS 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 540 tracked filers holding WTS, 280 increased or opened the position and 266 reduced or closed it; over the same quarter, open-market insider Form 4s were net sales.
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 WTS 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 37
- Capital World Investors$258M
- FORTRESS FINANCIAL GROUP, LLC$47M
- Alyeska Investment Group, L.P.$33M
- Jupiter Topco LLC$29M
- OBERWEIS ASSET MANAGEMENT INC/$20M
- FRONTIER CAPITAL MANAGEMENT CO LLC$18M
Full exits 49
- KBC Group NV$62M
- Amundi$45M
- Qube Research & Technologies Ltd$23M
- Walleye Capital LLC$21M
- Caisse de depot et placement du Quebec$21M
- Handelsbanken Fonder AB$14M
Largest adds
- BlackRock, Inc.$229M
- Pictet Asset Management Holding SA$186M
- Boston Partners$171M
- KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC$159M
- VANGUARD CAPITAL MANAGEMENT LLC$128M
- VANGUARD PORTFOLIO MANAGEMENT LLC$104M
Largest trims
- ALGERT GLOBAL LLC$29M
- LAZARD ASSET MANAGEMENT LLC$26M
- Nuveen, LLC$19M
- TUDOR INVESTMENT CORP ET AL$10M
- PRUDENTIAL FINANCIAL INC$8M
- BARCLAYS PLC$8M
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. trimmed | 2,820,067 | $1.1B | 11.6% | 2026-Q2 |
| KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC trimmed | 1,984,087 | $777M | 8.2% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC trimmed | 1,496,689 | $586M | 6.2% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC added | 1,235,782 | $484M | 5.1% | 2026-Q2 |
| Boston Partners added | 997,499 | $390M | 4.1% | 2026-Q2 |
| STATE STREET CORP trimmed | 852,511 | $334M | 3.5% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC trimmed | 767,575 | $301M | 3.2% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ trimmed | 673,229 | $264M | 2.8% | 2026-Q2 |
| Capital World Investors new | 659,012 | $258M | 2.7% | 2026-Q2 |
| FIRST TRUST ADVISORS LP added | 546,475 | $214M | 2.2% | 2026-Q2 |
| Impax Asset Management Group plc trimmed | 543,412 | $213M | 2.2% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP added | 526,726 | $206M | 2.2% | 2026-Q2 |
| Invesco Ltd. added | 509,483 | $199M | 2.1% | 2026-Q2 |
| Pictet Asset Management Holding SA added | 489,605 | $192M | 2.0% | 2026-Q2 |
| AQR CAPITAL MANAGEMENT LLC trimmed | 416,533 | $159M | 1.7% | 2026-Q2 |
| Mirova US LLC trimmed | 412,095 | $161M | 1.7% | 2026-Q2 |
| GAMCO INVESTORS, INC. ET AL trimmed | 399,032 | $156M | 1.6% | 2026-Q2 |
| Boston Trust Walden Corp trimmed | 368,967 | $144M | 1.5% | 2026-Q2 |
| MORGAN STANLEY added | 327,665 | $128M | 1.3% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 325,015 | $127M | 1.3% | 2026-Q2 |
| NEUBERGER BERMAN GROUP LLC added | 314,261 | $123M | 1.3% | 2026-Q2 |
| NORTHERN TRUST CORP trimmed | 260,683 | $102M | 1.1% | 2026-Q2 |
| Port Capital LLC trimmed | 248,896 | $97M | 1.0% | 2026-Q2 |
| NORGES BANK trimmed | 241,492 | $95M | 1.0% | 2026-Q2 |
| UBS Group AG added | 239,210 | $94M | 1.0% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC trimmed | 226,766 | $89M | 0.9% | 2026-Q2 |
| Bank of New York Mellon Corp trimmed | 194,384 | $76M | 0.8% | 2026-Q2 |
| Birch Hill Investment Advisors LLC added | 194,171 | $76M | 0.8% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN trimmed | 192,471 | $75M | 0.8% | 2026-Q2 |
| Cartenna Capital, LP trimmed | 190,000 | $74M | 0.8% | 2026-Q2 |
| RENAISSANCE TECHNOLOGIES LLC added | 179,940 | $70M | 0.7% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO trimmed | 173,611 | $68M | 0.7% | 2026-Q2 |
| VICTORY CAPITAL MANAGEMENT INC added | 171,183 | $67M | 0.7% | 2026-Q2 |
| JPMORGAN CHASE & CO trimmed | 169,527 | $61M | 0.6% | 2026-Q2 |
| Polar Capital Holdings Plc added | 163,097 | $64M | 0.7% | 2026-Q2 |
| AE Wealth Management LLC added | 157,140 | $62M | 0.6% | 2026-Q2 |
| GABELLI FUNDS LLC added | 156,556 | $61M | 0.6% | 2026-Q2 |
| RAYMOND JAMES FINANCIAL INC trimmed | 148,332 | $58M | 0.6% | 2026-Q2 |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. trimmed | 144,758 | $57M | 0.6% | 2026-Q2 |
| EULAV Asset Management added | 138,766 | $54M | 0.6% | 2026-Q2 |
| D. E. Shaw & Co., Inc. added | 127,649 | $50M | 0.5% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ trimmed | 127,125 | $50M | 0.5% | 2026-Q2 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP added | 125,419 | $49M | 0.5% | 2026-Q2 |
| VOYA INVESTMENT MANAGEMENT LLC added | 112,779 | $44M | 0.5% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC added | 108,110 | $42M | 0.4% | 2026-Q2 |
| Triodos Investment Management BV added | 105,000 | $41M | 0.4% | 2026-Q2 |
| Legal & General Group Plc added | 104,876 | $41M | 0.4% | 2026-Q2 |
| Squarepoint Ops LLC added | 104,815 | $41M | 0.4% | 2026-Q2 |
| OP Asset Management Ltd added | 98,085 | $38M | 0.4% | 2026-Q2 |
| AEGON ASSET MANAGEMENT UK Plc added | 95,231 | $37M | 0.4% | 2026-Q2 |
| LAZARD ASSET MANAGEMENT LLC trimmed | 95,078 | $37M | 0.4% | 2026-Q2 |
| STOREBRAND ASSET MANAGEMENT AS added | 94,813 | $37M | 0.4% | 2026-Q2 |
| Allianz Asset Management GmbH added | 94,811 | $28M | 0.3% | 2026-Q2 |
| PRINCIPAL FINANCIAL GROUP INC added | 86,383 | $34M | 0.4% | 2026-Q2 |
| Robeco Schweiz AG added | 85,114 | $33M | 0.3% | 2026-Q2 |
| Alyeska Investment Group, L.P. new | 84,203 | $33M | 0.3% | 2026-Q2 |
| Schonfeld Strategic Advisors LLC added | 84,083 | $33M | 0.3% | 2026-Q2 |
| RHUMBLINE ADVISERS trimmed | 82,542 | $32M | 0.3% | 2026-Q2 |
| FEDERATED HERMES, INC. added | 81,780 | $32M | 0.3% | 2026-Q2 |
| Russell Investments Group, Ltd. trimmed | 78,512 | $31M | 0.3% | 2026-Q2 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added | 78,477 | $31M | 0.3% | 2026-Q2 |
| FIL Ltd trimmed | 76,524 | $30M | 0.3% | 2026-Q2 |
| E. Ohman J:or Asset Management AB added | 76,425 | $30M | 0.3% | 2026-Q2 |
| Jupiter Topco LLC new | 75,087 | $29M | 0.3% | 2026-Q2 |
| GROUPAMA ASSET MANAGMENT trimmed | 74,864 | $29M | 0.3% | 2026-Q2 |
| FULLER & THALER ASSET MANAGEMENT, INC. added | 70,161 | $27M | 0.3% | 2026-Q2 |
| JUPITER ASSET MANAGEMENT LTD trimmed | 69,942 | $27M | 0.3% | 2026-Q2 |
| California Public Employees Retirement System added | 65,731 | $26M | 0.3% | 2026-Q2 |
| SEI INVESTMENTS CO added | 64,217 | $25M | 0.3% | 2026-Q2 |
| Point72 Asset Management, L.P. added | 62,174 | $24M | 0.3% | 2026-Q2 |
| Zurcher Kantonalbank (Zurich Cantonalbank) trimmed | 61,569 | $24M | 0.3% | 2026-Q2 |
| Perpetual Ltd added | 61,006 | $24M | 0.3% | 2026-Q2 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP added | 57,107 | $22M | 0.2% | 2026-Q2 |
| Erste Asset Management GmbH added | 55,482 | $20M | 0.2% | 2026-Q2 |
| Swiss National Bank trimmed | 53,720 | $21M | 0.2% | 2026-Q2 |
| SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC added | 52,585 | $21M | 0.2% | 2026-Q2 |
| OBERWEIS ASSET MANAGEMENT INC/ new | 50,840 | $20M | 0.2% | 2026-Q2 |
| DEUTSCHE BANK AG\ trimmed | 47,870 | $19M | 0.2% | 2026-Q2 |
| FMR LLC trimmed | 47,280 | $19M | 0.2% | 2026-Q2 |
| FRONTIER CAPITAL MANAGEMENT CO LLC new | 47,013 | $18M | 0.2% | 2026-Q2 |
| DUFF & PHELPS INVESTMENT MANAGEMENT CO added | 46,645 | $18M | 0.2% | 2026-Q2 |
| ENVESTNET ASSET MANAGEMENT INC added | 46,469 | $18M | 0.2% | 2026-Q2 |
| Champlain Investment Partners, LLC trimmed | 46,417 | $18M | 0.2% | 2026-Q2 |
| Montanaro Asset Management Ltd added | 46,100 | $18M | 0.2% | 2026-Q2 |
| Retirement Systems of Alabama trimmed | 45,519 | $18M | 0.2% | 2026-Q2 |
| ALLIANCEBERNSTEIN L.P. trimmed | 45,495 | $13M | 0.1% | 2026-Q2 |
| STATE OF WISCONSIN INVESTMENT BOARD trimmed | 45,357 | $18M | 0.2% | 2026-Q2 |
| Weiss Asset Management LP new | 44,331 | $17M | 0.2% | 2026-Q2 |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main added | 43,811 | $17M | 0.2% | 2026-Q2 |
| MARSHALL WACE, LLP added | 43,622 | $17M | 0.2% | 2026-Q2 |
| Nuveen, LLC trimmed | 42,443 | $17M | 0.2% | 2026-Q2 |
| NORDEA INVESTMENT MANAGEMENT AB trimmed | 42,226 | $16M | 0.2% | 2026-Q2 |
| Clark Capital Management Group, Inc. added | 40,673 | $16M | 0.2% | 2026-Q2 |
| ROYAL BANK OF CANADA added | 37,553 | $15M | 0.2% | 2026-Q2 |
| BURNEY CO/ added | 37,525 | $15M | 0.2% | 2026-Q2 |
| Allspring Global Investments Holdings, LLC added | 35,046 | $13M | 0.1% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC trimmed | 33,874 | $13M | 0.1% | 2026-Q2 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM trimmed | 31,881 | $12M | 0.1% | 2026-Q2 |
| Creative Planning added | 31,810 | $12M | 0.1% | 2026-Q2 |
| FORTRESS FINANCIAL GROUP, LLC new | 3 | $47M | 0.5% | 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.