Who owns Mueller Water Products (MWA)
Which tracked institutional funds hold MWA, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See MWA company fundamentals →
Ownership as of the 2026-Q1 13F filings (latest filed 2026-05-18). 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
The tracked-fund tape on MWA is one-sided between 2026-Q1 and 2026-Q2: 6 added or opened and 219 trimmed or exited — on balance reducing.
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
MWA’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 MWA more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in MWA 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 2025-Q4 and 2026-Q1, across 426 tracked filers holding MWA, 233 increased or opened the position and 179 reduced or closed it; over the same quarter, open-market insider Form 4s were net purchases.
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 MWA 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 1
- ExodusPoint Capital Management, LP$10M
Full exits 211
- VANGUARD PORTFOLIO MANAGEMENT LLC$312M
- VANGUARD CAPITAL MANAGEMENT LLC$193M
- FIRST TRUST ADVISORS LP$166M
- FULLER & THALER ASSET MANAGEMENT, INC.$142M
- GEODE CAPITAL MANAGEMENT, LLC$128M
- FIDUCIARY MANAGEMENT INC /WI/$114M
Largest adds
- BlackRock, Inc.$202M
- Schonfeld Strategic Advisors LLC$3M
- NORGES BANK$965K
- TUDOR INVESTMENT CORP ET AL$496K
- PRICE T ROWE ASSOCIATES INC /MD/$483K
Largest trims
- BALYASNY ASSET MANAGEMENT L.P.$30M
- MILLENNIUM MANAGEMENT LLC$15M
- TWO SIGMA INVESTMENTS, LP$13M
- Invesco Ltd.$8M
- STATE STREET CORP$8M
- D. E. Shaw & Co., Inc.$3M
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| BlackRock, Inc. added | 25,686,966 | $663M | 15.4% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 11,349,131 | $312M | 7.2% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 7,017,723 | $193M | 4.5% | 2026-Q1 |
| FIRST TRUST ADVISORS LP added | 6,036,679 | $166M | 3.8% | 2026-Q1 |
| STATE STREET CORP added | 6,330,173 | $164M | 3.8% | 2026-Q2 |
| FULLER & THALER ASSET MANAGEMENT, INC. added | 5,167,676 | $142M | 3.3% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 4,658,607 | $128M | 3.0% | 2026-Q1 |
| FIDUCIARY MANAGEMENT INC /WI/ added | 4,156,199 | $114M | 2.6% | 2026-Q1 |
| DIMENSIONAL FUND ADVISORS LP trimmed | 3,603,540 | $99M | 2.3% | 2026-Q1 |
| FRANKLIN RESOURCES INC added | 3,376,975 | $93M | 2.2% | 2026-Q1 |
| Impax Asset Management Group plc trimmed | 2,948,281 | $81M | 1.9% | 2026-Q1 |
| AMERICAN CENTURY COMPANIES INC added | 2,872,958 | $79M | 1.8% | 2026-Q1 |
| PRINCIPAL FINANCIAL GROUP INC trimmed | 2,820,097 | $78M | 1.8% | 2026-Q1 |
| GAMCO INVESTORS, INC. ET AL trimmed | 2,549,467 | $70M | 1.6% | 2026-Q1 |
| Amundi trimmed | 2,261,635 | $62M | 1.4% | 2026-Q1 |
| MORGAN STANLEY added | 2,167,702 | $60M | 1.4% | 2026-Q1 |
| JANUS HENDERSON GROUP PLC added | 1,934,813 | $53M | 1.2% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 1,856,352 | $51M | 1.2% | 2026-Q1 |
| Nuveen, LLC trimmed | 1,812,974 | $50M | 1.2% | 2026-Q1 |
| NORTHERN TRUST CORP added | 1,586,965 | $44M | 1.0% | 2026-Q1 |
| Invesco Ltd. trimmed | 1,657,446 | $43M | 1.0% | 2026-Q2 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. added | 1,510,769 | $42M | 1.0% | 2026-Q1 |
| FEDERATED HERMES, INC. added | 1,463,149 | $40M | 0.9% | 2026-Q1 |
| Allianz Asset Management GmbH trimmed | 1,167,258 | $32M | 0.7% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 1,088,701 | $30M | 0.7% | 2026-Q1 |
| Bank of New York Mellon Corp trimmed | 1,077,153 | $30M | 0.7% | 2026-Q1 |
| Legal & General Group Plc trimmed | 1,073,387 | $30M | 0.7% | 2026-Q1 |
| Triodos Investment Management BV trimmed | 1,008,000 | $28M | 0.6% | 2026-Q1 |
| AMERIPRISE FINANCIAL INC trimmed | 933,554 | $26M | 0.6% | 2026-Q1 |
| UBS Group AG trimmed | 926,651 | $25M | 0.6% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC trimmed | 901,822 | $25M | 0.6% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ added | 888,975 | $24M | 0.6% | 2026-Q1 |
| FMR LLC added | 920,144 | $24M | 0.6% | 2026-Q2 |
| ALGERT GLOBAL LLC added | 846,515 | $23M | 0.5% | 2026-Q1 |
| JPMORGAN CHASE & CO added | 738,834 | $20M | 0.5% | 2026-Q1 |
| GABELLI FUNDS LLC added | 674,293 | $19M | 0.4% | 2026-Q1 |
| Aberdeen Group plc trimmed | 649,907 | $18M | 0.4% | 2026-Q1 |
| BESSEMER GROUP INC added | 588,830 | $16M | 0.4% | 2026-Q1 |
| ENVESTNET ASSET MANAGEMENT INC added | 588,590 | $16M | 0.4% | 2026-Q1 |
| VOYA INVESTMENT MANAGEMENT LLC trimmed | 588,089 | $16M | 0.4% | 2026-Q1 |
| GW&K Investment Management, LLC trimmed | 583,661 | $16M | 0.4% | 2026-Q1 |
| PANAGORA ASSET MANAGEMENT INC trimmed | 567,932 | $16M | 0.4% | 2026-Q1 |
| Assenagon Asset Management S.A. trimmed | 563,164 | $15M | 0.4% | 2026-Q1 |
| Public Sector Pension Investment Board added | 559,482 | $15M | 0.4% | 2026-Q1 |
| DUFF & PHELPS INVESTMENT MANAGEMENT CO trimmed | 492,139 | $14M | 0.3% | 2026-Q1 |
| Lightrock Netherlands B.V. trimmed | 474,784 | $13M | 0.3% | 2026-Q1 |
| BROWN ADVISORY INC trimmed | 469,168 | $13M | 0.3% | 2026-Q1 |
| CRAWFORD INVESTMENT COUNSEL INC added | 450,940 | $12M | 0.3% | 2026-Q1 |
| CREDIT AGRICOLE S A trimmed | 450,745 | $12M | 0.3% | 2026-Q1 |
| Perpetual Ltd added | 436,286 | $12M | 0.3% | 2026-Q1 |
| RHUMBLINE ADVISERS added | 419,247 | $12M | 0.3% | 2026-Q1 |
| TWO SIGMA INVESTMENTS, LP trimmed | 445,723 | $12M | 0.3% | 2026-Q2 |
| Swiss Life Asset Management Ltd trimmed | 413,383 | $11M | 0.3% | 2026-Q1 |
| ZACKS INVESTMENT MANAGEMENT added | 408,435 | $11M | 0.3% | 2026-Q1 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC trimmed | 404,955 | $11M | 0.3% | 2026-Q1 |
| Trexquant Investment LP added | 392,579 | $11M | 0.3% | 2026-Q1 |
| STATE OF WISCONSIN INVESTMENT BOARD trimmed | 380,114 | $10M | 0.2% | 2026-Q1 |
| SPEECE THORSON CAPITAL GROUP INC trimmed | 374,566 | $10M | 0.2% | 2026-Q1 |
| ExodusPoint Capital Management, LP added | 384,201 | $10M | 0.2% | 2026-Q2 |
| JANE STREET GROUP, LLC trimmed | 353,962 | $10M | 0.2% | 2026-Q1 |
| Thrivent Financial for Lutherans trimmed | 350,733 | $10M | 0.2% | 2026-Q1 |
| Robeco Schweiz AG trimmed | 348,669 | $10M | 0.2% | 2026-Q1 |
| Qube Research & Technologies Ltd trimmed | 337,204 | $9M | 0.2% | 2026-Q1 |
| VICTORY CAPITAL MANAGEMENT INC trimmed | 322,743 | $9M | 0.2% | 2026-Q1 |
| NORGES BANK added | 338,100 | $9M | 0.2% | 2026-Q2 |
| Swiss National Bank added | 309,300 | $9M | 0.2% | 2026-Q1 |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC added | 307,137 | $8M | 0.2% | 2026-Q1 |
| Zurcher Kantonalbank (Zurich Cantonalbank) trimmed | 291,577 | $8M | 0.2% | 2026-Q1 |
| TEACHER RETIREMENT SYSTEM OF TEXAS added | 285,579 | $8M | 0.2% | 2026-Q1 |
| PDT Partners, LLC added | 284,424 | $8M | 0.2% | 2026-Q1 |
| RAYMOND JAMES FINANCIAL INC added | 282,355 | $8M | 0.2% | 2026-Q1 |
| Palisades Investment Partners, LLC added | 255,250 | $7M | 0.2% | 2026-Q1 |
| ProShare Advisors LLC trimmed | 246,263 | $7M | 0.2% | 2026-Q1 |
| Connor, Clark & Lunn Investment Management Ltd. trimmed | 240,128 | $7M | 0.2% | 2026-Q1 |
| Allspring Global Investments Holdings, LLC added | 232,163 | $7M | 0.2% | 2026-Q1 |
| BFSG, LLC added | 223,873 | $6M | 0.1% | 2026-Q1 |
| Schonfeld Strategic Advisors LLC added | 238,008 | $6M | 0.1% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 227,110 | $6M | 0.1% | 2026-Q2 |
| GLOBEFLEX CAPITAL L P trimmed | 207,636 | $6M | 0.1% | 2026-Q1 |
| Edgestream Partners, L.P. trimmed | 205,488 | $6M | 0.1% | 2026-Q1 |
| PRUDENTIAL FINANCIAL INC added | 205,166 | $6M | 0.1% | 2026-Q1 |
| BALYASNY ASSET MANAGEMENT L.P. trimmed | 213,711 | $6M | 0.1% | 2026-Q2 |
| VAN LANSCHOT KEMPEN INVESTMENT MANAGEMENT N.V. | 200,572 | $6M | 0.1% | 2026-Q1 |
| Man Group plc trimmed | 198,948 | $5M | 0.1% | 2026-Q1 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM added | 186,529 | $5M | 0.1% | 2026-Q1 |
| Candriam S.C.A. trimmed | 183,650 | $5M | 0.1% | 2026-Q1 |
| LAZARD ASSET MANAGEMENT LLC added | 178,452 | $5M | 0.1% | 2026-Q1 |
| MCDONALD PARTNERS LLC added | 178,395 | $5M | 0.1% | 2026-Q1 |
| VANGUARD GROUP INC trimmed | 19,452,025 | $463M | 10.7% | 2025-Q4 stale |
| WESTFIELD CAPITAL MANAGEMENT CO LP added | 2,166,945 | $52M | 1.2% | 2025-Q2 stale |
| SG Capital Management LLC added | 1,211,295 | $31M | 0.7% | 2025-Q1 stale |
| JUPITER ASSET MANAGEMENT LTD added | 930,230 | $24M | 0.6% | 2025-Q3 stale |
| Woodline Partners LP added | 774,613 | $19M | 0.4% | 2025-Q2 stale |
| Cubist Systematic Strategies, LLC trimmed | 682,212 | $17M | 0.4% | 2025-Q3 stale |
| CASTLEARK MANAGEMENT LLC added | 377,960 | $10M | 0.2% | 2025-Q1 stale |
| Driehaus Capital Management LLC trimmed | 312,183 | $8M | 0.2% | 2025-Q2 stale |
| AXIOM INVESTORS LLC /DE trimmed | 272,043 | $7M | 0.2% | 2025-Q3 stale |
| RENAISSANCE TECHNOLOGIES LLC added | 263,600 | $6M | 0.1% | 2025-Q4 stale |
| Alberta Investment Management Corp added | 212,811 | $5M | 0.1% | 2025-Q1 stale |
| Jump Financial, LLC added | 205,286 | $5M | 0.1% | 2025-Q3 stale |
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.