Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
230 institutional managers reported holding MXL for the quarter ended Mar 31, 2026. Together they hold about 86% of shares outstanding; the top 10 hold 57%. 25 opened new positions; 33 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| Vanguard Group | 13.47M | 15.38% | $234.3M | added +1.1% | ≤2013 |
| BlackRock | 13.40M | 15.30% | $233.2M | trimmed -0.9% | ≤2013 |
| FMR (Fidelity) | 5.26M | 6.01% | $91.5M | trimmed -3.9% | ≤2013 |
| State Street | 5.07M | 5.79% | $88.2M | added +11% | ≤2013 |
| Manufacturers Life Insurance Company, THE | 3.00M | 3.42% | $52.1M | trimmed -1.9% | ≤2013 |
| Invesco | 2.50M | 2.86% | $43.5M | added +16.5% | ≤2013 |
| Marshall Wace | 2.20M | 2.52% | $38.3M | added +57.1% | 2023 Q2 |
| Geode Capital | 2.08M | 2.37% | $36.1M | added +1.9% | ≤2013 |
| Dimensional Fund Advisors | 1.69M | 1.93% | $29.4M | added +7.2% | ≤2013 |
| Goldman Sachs | 1.45M | 1.65% | $25.1M | trimmed -29.3% | 2014 Q1 |
| Charles Schwab Investment Management | 1.14M | 1.30% | $19.8M | unchanged | ≤2013 |
| Nuveen | 1.14M | 1.30% | $19.8M | trimmed -9.1% | 2019 Q2 |
| Federated Hermes, INC. | 895.4k | 1.02% | $15.6M | added +19.5% | 2025 Q1 |
| Morgan Stanley | 878.1k | 1.00% | $15.3M | trimmed -31.3% | 2013 Q3 |
| Paradigm Capital Management INC/NY | 861.0k | 0.98% | $15.0M | unchanged | 2020 Q3 |
| Sora Investors LLC | 846.1k | 0.97% | $14.7M | opened | 2026 Q1 |
| Northern Trust | 810.8k | 0.93% | $14.1M | added +3% | ≤2013 |
| BNP Paribas Financial Markets | 721.5k | 0.82% | $12.6M | trimmed -5% | 2014 Q3 |
| HighTower Advisors, LLC | 645.4k | 0.74% | $11.2M | trimmed -1.7% | ≤2013 |
| Bank OF America CORP /DE/ | 641.0k | 0.73% | $11.2M | added +6.9% | ≤2013 |
| Ameriprise Financial INC | 557.5k | 0.64% | $9.7M | trimmed -1.6% | 2015 Q2 |
| Silvercrest Asset Management Group LLC | 551.3k | 0.63% | $9.6M | added +19.5% | 2025 Q3 |
| Algert Global LLC | 550.4k | 0.63% | $9.6M | trimmed -42.7% | 2021 Q4 |
| Hodges Capital Management INC. | 547.7k | 0.63% | $9.5M | added +15.3% | 2025 Q1 |
| Defiance ETFs, LLC | 524.6k | 0.60% | $9.1M | trimmed -15.2% | 2025 Q4 |
| Penserra Capital Management LLC | 524.6k | 0.60% | $9.1M | trimmed -15.2% | 2025 Q2 |
| Voya Investment Management LLC | 515.7k | 0.59% | $9.0M | added +3403% | 2015 Q2 |
| BNY Mellon | 470.4k | 0.54% | $8.2M | trimmed -4.2% | ≤2013 |
| Renaissance Technologies | 445.9k | 0.51% | $7.8M | added +297.7% | 2025 Q4 |
| Jane Street | 437.2k | 0.50% | $7.6M | added +1754.9% | 2021 Q1 |
| Allianz Asset Management GmbH | 434.0k | 0.49% | $7.5M | trimmed -24.5% | 2020 Q3 |
| AQR Capital | 412.9k | 0.47% | $7.2M | trimmed -11% | 2020 Q3 |
| SEI Investments CO | 405.2k | 0.46% | $7.0M | added +108.3% | 2025 Q3 |
| Barclays PLC | 401.1k | 0.46% | $7.0M | trimmed -37.8% | 2022 Q2 |
| Voloridge Investment Management | 400.8k | 0.46% | $7.0M | trimmed -24.8% | 2021 Q2 |
| Principal Financial Group INC | 395.3k | 0.45% | $6.9M | added +0.9% | 2016 Q4 |
| UBS | 364.3k | 0.42% | $6.3M | added +68.8% | ≤2013 |
| Deutsche Bank AG\ | 342.6k | 0.39% | $6.0M | trimmed -42.9% | ≤2013 |
| Trexquant Investment LP | 326.9k | 0.37% | $5.7M | added +8.7% | 2025 Q3 |
| 1492 Capital Management LLC | 316.8k | 0.36% | $5.5M | unchanged | 2024 Q1 |
| Two Sigma | 294.6k | 0.34% | $5.1M | added +1% | 2019 Q4 |
| Public Sector Pension Investment Board | 290.7k | 0.33% | $5.1M | added +2.3% | 2017 Q2 |
| Man Group | 274.8k | 0.31% | $4.8M | added +370.4% | 2025 Q4 |
| HRT Financial LP | 268.0k | 0.31% | $4.7M | added +1076.2% | 2023 Q4 |
| Mackenzie Financial CORP | 263.2k | 0.30% | $4.6M | opened | 2026 Q1 |
| Rhumbline Advisers | 243.9k | 0.28% | $4.2M | added +0.7% | ≤2013 |
| Moody Aldrich Partners LLC | 223.7k | 0.26% | $3.9M | added +64.6% | 2025 Q3 |
| Franklin Resources | 222.2k | 0.25% | $3.9M | added +576.5% | 2024 Q1 |
| Acadian Asset Management | 210.6k | 0.24% | $3.7M | added +3.2% | 2025 Q1 |
| Engineers Gate Manager LP | 209.2k | 0.24% | $3.6M | added +39% | 2021 Q1 |
Largest 50 of 230 shown; the full ranked, searchable register is at boothcheck.com/holders/MXL. 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.