Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
524 institutional managers reported holding MUSA for the quarter ended Mar 31, 2026. Together they hold about 83% of shares outstanding; the top 10 hold 42%. 84 opened new positions; 81 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| BlackRock | 1.68M | 8.98% | $830.3M | added +1.9% | 2013 Q3 |
| Vanguard Group | 1.61M | 8.63% | $797.3M | added +0.6% | 2013 Q3 |
| FMR (Fidelity) | 1.47M | 7.83% | $724.1M | trimmed -9.7% | 2013 Q3 |
| State Street | 556.7k | 2.98% | $275.0M | trimmed -2.1% | 2013 Q3 |
| Boston Partners | 536.9k | 2.87% | $265.2M | added +488.1% | 2025 Q2 |
| Barclays PLC | 532.4k | 2.85% | $263.0M | added +31.4% | 2013 Q3 |
| Huntington National Bank | 414.7k | 2.22% | $204.9M | added +668800% | 2021 Q3 |
| River Road Asset Management, LLC | 395.8k | 2.12% | $195.5M | trimmed -21.8% | 2015 Q3 |
| Geode Capital | 376.0k | 2.01% | $185.8M | added +3% | 2013 Q3 |
| AQR Capital | 315.9k | 1.69% | $156.1M | trimmed -37.7% | 2013 Q3 |
| Dimensional Fund Advisors | 297.3k | 1.59% | $146.9M | trimmed -1.1% | 2013 Q3 |
| Clearbridge Investments, LLC | 269.2k | 1.44% | $133.0M | unchanged | 2013 Q3 |
| Renaissance Technologies | 231.9k | 1.24% | $114.5M | trimmed -14.2% | 2017 Q4 |
| Morgan Stanley | 210.6k | 1.13% | $104.0M | trimmed -33.9% | 2013 Q3 |
| Marshall Wace | 204.5k | 1.09% | $101.0M | opened | 2026 Q1 |
| UBS | 191.6k | 1.02% | $94.6M | added +37.4% | 2013 Q3 |
| AllianceBernstein | 184.2k | 0.98% | $91.0M | added +19% | 2013 Q3 |
| London CO OF Virginia | 167.5k | 0.90% | $82.8M | trimmed -1.6% | 2021 Q2 |
| Citadel Advisors | 161.9k | 0.87% | $80.0M | added +384.5% | 2018 Q2 |
| Allianz Asset Management GmbH | 160.4k | 0.86% | $79.2M | added +43.4% | 2019 Q3 |
| Raymond James Financial INC | 156.9k | 0.84% | $77.5M | added +6.5% | 2014 Q3 |
| HighTower Advisors, LLC | 149.6k | 0.80% | $73.9M | added +1.9% | 2014 Q1 |
| BNY Mellon | 149.1k | 0.80% | $73.6M | added +3.4% | 2013 Q3 |
| Recurrent Investment Advisors LLC | 146.1k | 0.78% | $72.2M | added +23.2% | 2023 Q2 |
| Northern Trust | 144.7k | 0.77% | $71.5M | added +0.7% | 2013 Q3 |
| Fiera Capital CORP | 139.5k | 0.75% | $68.9M | added +5% | 2024 Q3 |
| Charles Schwab Investment Management | 137.6k | 0.73% | $68.0M | added +5.1% | 2013 Q3 |
| Neuberger Berman Group LLC | 132.7k | 0.71% | $65.6M | trimmed -19.7% | 2017 Q1 |
| Fuller & Thaler Asset Management, INC. | 131.6k | 0.70% | $65.0M | trimmed -58.6% | 2018 Q1 |
| Envestnet Asset Management INC | 130.3k | 0.70% | $64.4M | added +4.1% | 2015 Q2 |
| Argent Capital Management LLC | 120.2k | 0.64% | $59.4M | trimmed -3% | 2023 Q2 |
| Goldman Sachs | 118.3k | 0.63% | $58.5M | added +61.7% | 2013 Q3 |
| Brown Advisory INC | 113.8k | 0.61% | $56.2M | trimmed -9.7% | 2015 Q3 |
| Baird Financial Group, INC. | 105.0k | 0.56% | $51.9M | added +5.1% | 2017 Q3 |
| Wellington Management | 102.2k | 0.55% | $50.5M | added +1024.2% | 2024 Q3 |
| Thrivent Financial for Lutherans | 90.2k | 0.48% | $44.6M | added +1042% | 2025 Q3 |
| Encompass Capital Advisors LLC | 90.0k | 0.48% | $44.5M | opened | 2026 Q1 |
| FIL LTD | 86.5k | 0.46% | $42.7M | trimmed -17.8% | 2024 Q1 |
| Bessemer Group INC | 86.4k | 0.46% | $42.7M | added +39.1% | 2018 Q3 |
| Ameriprise Financial INC | 86.3k | 0.46% | $42.6M | added +238.8% | 2013 Q3 |
| Southernsun Asset Management, LLC (focused) | 84.8k | 0.45% | $41.9M | trimmed -8.2% | 2014 Q3 |
| Bank OF America CORP /DE/ | 83.7k | 0.45% | $41.3M | trimmed -41.2% | 2013 Q3 |
| Silvercrest Asset Management Group LLC | 81.7k | 0.44% | $40.4M | added +6.1% | 2025 Q2 |
| Balyasny Asset Management | 76.1k | 0.41% | $37.6M | added +81.1% | 2023 Q3 |
| American Century Companies INC | 71.7k | 0.38% | $35.4M | added +7.3% | 2019 Q1 |
| Invesco | 69.1k | 0.37% | $34.1M | added +20.1% | 2013 Q3 |
| Two Sigma | 67.6k | 0.36% | $33.4M | added +2914.8% | 2025 Q4 |
| Point72 | 64.9k | 0.35% | $32.0M | added +7.7% | 2025 Q4 |
| Riho Partners, LLC (focused) | 54.7k | 0.29% | $27.0M | added +5.6% | 2025 Q4 |
| Security National Bank | 52.6k | 0.28% | $26.0M | unchanged | 2017 Q1 |
Largest 50 of 524 shown; the full ranked, searchable register is at boothcheck.com/holders/MUSA. 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.