Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
396 institutional managers reported holding MIDD for the quarter ended Mar 31, 2026. Reported positions total over 95% of shares outstanding; the top 10 hold 57%. 56 opened new positions; 64 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| T. Rowe Price | 6.41M | 13.58% | $850.7M | added +11.1% | ≤2013 |
| Vanguard Group | 4.39M | 9.30% | $582.4M | added +2% | ≤2013 |
| BlackRock | 4.25M | 9.00% | $563.9M | added +2.3% | ≤2013 |
| Garden Investment Management, L.p. (focused) | 3.38M | 7.15% | $448.2M | unchanged | 2024 Q4 |
| Ariel Investments, LLC | 1.57M | 3.33% | $208.8M | added +1% | 2020 Q1 |
| Select Equity Group | 1.50M | 3.18% | $199.0M | trimmed -50.5% | 2021 Q2 |
| State Street | 1.42M | 3.02% | $188.9M | added +0.6% | ≤2013 |
| Invesco | 1.38M | 2.93% | $183.5M | trimmed -3.4% | ≤2013 |
| Earnest Partners LLC | 1.29M | 2.73% | $171.4M | trimmed -1.2% | 2024 Q3 |
| Wellington Management | 1.20M | 2.54% | $159.1M | trimmed -8.2% | 2014 Q4 |
| Dimensional Fund Advisors | 1.11M | 2.35% | $147.2M | trimmed -25.3% | ≤2013 |
| Turtle Creek Asset Management INC. (focused) | 943.5k | 2.00% | $125.1M | trimmed -15.5% | 2017 Q3 |
| Geode Capital | 925.1k | 1.96% | $122.7M | added +2.8% | ≤2013 |
| Bank OF America CORP /DE/ | 852.7k | 1.80% | $113.1M | trimmed -1.1% | ≤2013 |
| SEI Investments CO | 803.4k | 1.70% | $106.5M | added +6.5% | 2014 Q4 |
| D. E. Shaw | 781.3k | 1.65% | $103.6M | trimmed -21.2% | 2018 Q2 |
| T. Rowe Price Investment Management, INC. | 735.6k | 1.56% | $97.5M | added +343.1% | 2024 Q4 |
| Ameriprise Financial INC | 628.2k | 1.33% | $83.3M | added +8% | ≤2013 |
| Arrowstreet Capital | 563.6k | 1.19% | $74.7M | added +14.7% | 2024 Q1 |
| Morgan Stanley | 558.1k | 1.18% | $74.0M | trimmed -7.1% | ≤2013 |
| Cooke & Bieler LP | 549.4k | 1.16% | $72.9M | added +69.8% | 2025 Q4 |
| UBS | 536.9k | 1.14% | $71.2M | added +55.4% | ≤2013 |
| Bank OF Montreal /CAN/ | 456.6k | 0.97% | $60.6M | unchanged | ≤2013 |
| BNY Mellon | 431.0k | 0.91% | $57.2M | added +1.5% | ≤2013 |
| Northern Trust | 417.2k | 0.88% | $55.3M | added +2.7% | ≤2013 |
| Franklin Resources | 407.1k | 0.86% | $54.0M | trimmed -25.9% | 2021 Q1 |
| Boston Partners | 359.8k | 0.76% | $47.7M | trimmed -1% | 2021 Q2 |
| Charles Schwab Investment Management | 338.9k | 0.72% | $44.9M | added +4.3% | ≤2013 |
| Neuberger Berman Group LLC | 317.8k | 0.67% | $42.1M | added +51.5% | ≤2013 |
| AQR Capital | 294.2k | 0.62% | $39.0M | added +61.6% | 2018 Q4 |
| Clarkston Capital Partners, LLC | 289.5k | 0.61% | $38.4M | trimmed -63.3% | 2024 Q4 |
| Quantinno Capital Management LP | 288.4k | 0.61% | $38.3M | added +36.9% | 2022 Q4 |
| Russell Investments Group, LTD. | 231.7k | 0.49% | $30.7M | added +44.6% | 2016 Q4 |
| Jane Street | 216.6k | 0.46% | $28.7M | added +407.9% | 2019 Q3 |
| Renaissance Technologies | 205.3k | 0.43% | $27.2M | added +1572.9% | 2025 Q1 |
| NEW York State Common Retirement Fund | 176.8k | 0.37% | $23.5M | trimmed -1% | 2013 Q4 |
| Marshall Wace | 165.0k | 0.35% | $21.9M | trimmed -19.5% | 2024 Q3 |
| Jones Financial Companies Lllp | 150.9k | 0.32% | $20.0M | added +12425.7% | 2024 Q3 |
| Lazard Asset Management LLC | 147.9k | 0.31% | $19.6M | trimmed -9.5% | 2021 Q3 |
| Natixis Advisors, LLC | 145.4k | 0.31% | $19.3M | added +0.6% | 2024 Q3 |
| Lord, Abbett & CO. LLC | 144.1k | 0.30% | $19.1M | trimmed -2.1% | 2025 Q1 |
| Rhumbline Advisers | 127.0k | 0.27% | $16.8M | added +0.8% | ≤2013 |
| Ancora Advisors LLC | 126.6k | 0.27% | $16.8M | added +32.7% | 2025 Q1 |
| Wells Fargo & COMPANY/MN | 125.6k | 0.27% | $16.7M | added +6.3% | ≤2013 |
| Impax Asset Management Group plc | 106.0k | 0.22% | $14.1M | trimmed -20.8% | 2022 Q4 |
| Principal Financial Group INC | 103.5k | 0.22% | $13.7M | added +3.8% | ≤2013 |
| Trexquant Investment LP | 101.9k | 0.22% | $13.5M | opened | 2026 Q1 |
| Raymond James Financial INC | 101.6k | 0.21% | $13.5M | added +1.8% | 2021 Q1 |
| Nuveen | 96.2k | 0.20% | $12.8M | unchanged | 2019 Q2 |
| Swiss National Bank | 94.6k | 0.20% | $12.5M | unchanged | ≤2013 |
Largest 50 of 396 shown; the full ranked, searchable register is at boothcheck.com/holders/MIDD. Related filers are grouped using the filings' own included-manager declarations. Historically, several managers opening new positions in the same quarter said almost nothing about the quarter that followed (59,118 cases since 2013). A filed record, not a forecast. Nothing here is investment advice.