Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in MWA held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 25.1M | $691.0M | -0.1% | 16.073% | 0.01% |
| 2 | VANGUARD PORTFOLIO MANAGEMENT LLC | 11.3M | $312.0M | — | 7.257% | 0.02% |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | 7.0M | $192.9M | — | 4.487% | 0.00% |
| 4 | STATE STREET CORP | 6.2M | $171.3M | +1.1% | 3.985% | 0.01% |
| 5 | FIRST TRUST ADVISORS LP | 6.0M | $165.9M | +34.0% | 3.860% | 0.12% |
| 6 | FULLER & THALER ASSET MANAGEMENT, INC. | 5.2M | $142.1M | +1.7% | 3.304% | 0.48% |
| 7 | GEODE CAPITAL MANAGEMENT, LLC | 4.7M | $128.1M | +4.1% | 2.979% | 0.01% |
| 8 | FIDUCIARY MANAGEMENT INC /WI/ | 4.2M | $114.3M | +31.3% | 2.658% | 1.42% |
| 9 | DIMENSIONAL FUND ADVISORS LP | 3.6M | $99.1M | -0.3% | 2.304% | 0.02% |
| 10 | FRANKLIN RESOURCES INC | 3.4M | $92.8M | +4.2% | 2.159% | 0.02% |
| 11 | Impax Asset Management Group plc | 2.9M | $81.0M | -12.4% | 1.885% | 0.56% |
| 12 | AMERICAN CENTURY COMPANIES INC | 2.9M | $79.0M | +38.4% | 1.837% | 0.04% |
| 13 | PRINCIPAL FINANCIAL GROUP INC | 2.8M | $77.5M | -13.6% | 1.803% | 0.04% |
| 14 | GAMCO INVESTORS, INC. ET AL | 2.5M | $70.1M | -0.7% | 1.630% | 0.69% |
| 15 | Amundi | 2.3M | $62.2M | -3.8% | 1.446% | 0.02% |
| 16 | MORGAN STANLEY | 2.2M | $59.6M | +5.3% | 1.386% | 0.00% |
| 17 | Invesco Ltd. | 2.0M | $55.7M | -30.3% | 1.295% | 0.01% |
| 18 | JANUS HENDERSON GROUP PLC | 1.9M | $53.2M | +58.6% | 1.237% | 0.03% |
| 19 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 1.9M | $51.0M | -0.8% | 1.187% | 0.01% |
| 20 | Nuveen, LLC | 1.8M | $49.8M | -5.9% | 1.159% | 0.01% |
| 21 | NORTHERN TRUST CORP | 1.6M | $43.6M | +0.2% | 1.015% | 0.01% |
| 22 | MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 1.5M | $41.5M | +12.9% | 0.966% | 0.06% |
| 23 | FEDERATED HERMES, INC. | 1.5M | $40.2M | +4.8% | 0.936% | 0.07% |
| 24 | BALYASNY ASSET MANAGEMENT LLC | 1.3M | $36.0M | +100.5% | 0.837% | 0.12% |
| 25 | Allianz Asset Management GmbH | 1.2M | $32.1M | -25.1% | 0.746% | 0.03% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in MWA — a direct measure of their conviction.
Filings activity in MWA during Q1 2026, grouped by how each filer changed its position.
8 quarters of 13F filings · Δ columns show change vs prior quarter
| Quarter | Inst. Holders | Δ Holders | Ownership % | Δ Ownership | Total 13F Value | Δ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 419 | +6.1% | 96.71% | +11.74 pp | $3.91B | +14% |
| Q4 2025 | 395 | +1.0% | 84.97% | 6.31 pp | $3.43B | 6.9% |
| Q3 2025 | 391 | +5.7% | 91.28% | +3.18 pp | $3.69B | +3.6% |
| Q2 2025 | 370 | 2.1% | 88.10% | 8.48 pp | $3.56B | 8.8% |
| Q1 2025 | 378 | +14% | 96.58% | +19.38 pp | $3.90B | +25% |
| Q4 2024 | 333 | +2.1% | 77.20% | +6.02 pp | $3.12B | +8.4% |
| Q3 2024 | 326 | +9.0% | 71.18% | +13.10 pp | $2.87B | +23% |
| Q2 2024 | 299 | — | 58.08% | — | $2.35B | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying MWA stock.
Based on Q1 2026 13F filings, institutional ownership of Mueller Water Products, Inc. stands at 96.7%, held across 419 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of MWA, with approximately 25,135,023 shares worth $0.69B as of Q1 2026.
No marquee "smart money" managers (Berkshire, Burry, ARK, Tiger Global, Pershing Square, Baupost, etc.) currently appear among the top 25 institutional holders of MWA.
Our composite Smart Money Score for MWA is 50 out of 100 (Neutral). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
71 institutions opened new positions in MWA during Q1 2026, while 47 fully exited. 278 added to existing positions and 68 trimmed.
MWA institutional ownership rose by 11.74 percentage points quarter-over-quarter, with a net change of +24 holders.
The top 10 institutions account for 54.0% of all reported 13F value in MWA, and the top 25 account for 75.3%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
Mueller Water Products, Inc. (MWA) Institutional Ownership