3 institutions reported holding $25,838 of MUELLER WATER PRODUCTS INC (MWA.B) in SEC 13F filings for 2026-06-30. Largest institutional holders: GROUP ONE TRADING LLC ($20,664), SIMPLEX TRADING, LLC ($5,166), HUNTINGTON NATIONAL BANK ($8). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | GROUP ONE TRADING LLC | $20,664 | 800 | Added |
| 2 | SIMPLEX TRADING, LLC | $5,166 | 200 | New |
| 3 | HUNTINGTON NATIONAL BANK | $8 | 1 | Hold |
来源：SEC 13F 申报文件 · 截至 2026-06-30