Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in MLI held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 11.6M | $1.29B | -0.3% | 10.487% | 0.02% |
| 2 | FIRST TRUST ADVISORS LP | 5.6M | $619.8M | +0.6% | 5.042% | 0.44% |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | 5.0M | $551.2M | — | 4.483% | 0.01% |
| 4 | VANGUARD PORTFOLIO MANAGEMENT LLC | 4.9M | $545.4M | — | 4.436% | 0.03% |
| 5 | AQR CAPITAL MANAGEMENT LLC | 4.9M | $536.0M | +20.3% | 4.396% | 0.25% |
| 6 | STATE STREET CORP | 3.5M | $387.8M | +4.2% | 3.154% | 0.01% |
| 7 | GEODE CAPITAL MANAGEMENT, LLC | 3.0M | $331.1M | +13.1% | 2.693% | 0.02% |
| 8 | GOLDMAN SACHS GROUP INC | 2.3M | $250.3M | -10.6% | 2.036% | 0.03% |
| 9 | DIMENSIONAL FUND ADVISORS LP | 2.2M | $241.9M | -23.4% | 1.968% | 0.05% |
| 10 | WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | 2.1M | $233.8M | +18.5% | 1.901% | 0.77% |
| 11 | Allspring Global Investments Holdings, LLC | 2.0M | $230.1M | -15.7% | 1.843% | 0.39% |
| 12 | Invesco Ltd. | 2.0M | $222.3M | +35.2% | 1.808% | 0.03% |
| 13 | FMR LLC | 1.8M | $200.1M | +54.0% | 1.628% | 0.01% |
| 14 | Pictet Asset Management Holding SA | 1.7M | $185.6M | +136.5% | 1.509% | 0.20% |
| 15 | GAMCO INVESTORS, INC. ET AL | 1.6M | $181.4M | -12.3% | 1.476% | 1.79% |
| 16 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 1.5M | $169.2M | -2.3% | 1.376% | 0.09% |
| 17 | MORGAN STANLEY | 1.3M | $142.0M | -22.8% | 1.155% | 0.01% |
| 18 | GABELLI FUNDS LLC | 1.2M | $136.3M | -8.8% | 1.109% | 0.92% |
| 19 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 1.1M | $126.1M | +2.0% | 1.026% | 0.02% |
| 20 | Bank of New York Mellon Corp | 1.0M | $113.2M | +0.4% | 0.921% | 0.02% |
| 21 | UBS Group AG | 981K | $108.6M | +39.4% | 0.884% | 0.02% |
| 22 | NORTHERN TRUST CORP | 927K | $102.7M | +2.3% | 0.836% | 0.01% |
| 23 | AMERICAN CENTURY COMPANIES INC | 835K | $92.6M | -31.8% | 0.753% | 0.05% |
| 24 | MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 817K | $90.5M | +5.5% | 0.736% | 0.12% |
| 25 | SYSTEMATIC FINANCIAL MANAGEMENT LP | 785K | $86.9M | -4.2% | 0.707% | 1.99% |
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 MLI — a direct measure of their conviction.
Filings activity in MLI 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 | 707 | +4.6% | 66.87% | 4.67 pp | $10.25B | 6.5% |
| Q4 2025 | 676 | +10% | 71.54% | +10.55 pp | $10.96B | +17% |
| Q3 2025 | 613 | +8.7% | 60.99% | +13.75 pp | $9.35B | +29% |
| Q2 2025 | 564 | +7.8% | 47.24% | +0.14 pp | $7.24B | +0.3% |
| Q1 2025 | 523 | +0.6% | 47.10% | 2.96 pp | $7.22B | 5.9% |
| Q4 2024 | 520 | +10% | 50.06% | +3.00 pp | $7.67B | +6.4% |
| Q3 2024 | 471 | +12% | 47.06% | +9.51 pp | $7.21B | +25% |
| Q2 2024 | 422 | — | 37.55% | — | $5.75B | — |
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 MLI stock.
Based on Q1 2026 13F filings, institutional ownership of Mueller Industries, Inc. stands at 66.9%, held across 707 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of MLI, with approximately 11,636,458 shares worth $1.29B 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 MLI.
Our composite Smart Money Score for MLI is 33 out of 100 (Bearish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
127 institutions opened new positions in MLI during Q1 2026, while 96 fully exited. 210 added to existing positions and 367 trimmed.
MLI institutional ownership fell by 4.67 percentage points quarter-over-quarter, with a net change of +31 holders.
The top 10 institutions account for 48.7% of all reported 13F value in MLI, and the top 25 account for 70.0%.
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 Industries, Inc. (MLI) Institutional Ownership