Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
453 institutional managers reported holding ARMK for the quarter ended Mar 31, 2026. Reported positions total over 95% of shares outstanding; the top 10 hold 55%. 83 opened new positions; 58 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| BlackRock | 25.55M | 9.59% | $1.04B | added +11.3% | 2013 Q4 |
| Vanguard Group | 25.05M | 9.40% | $1.02B | added +1.7% | 2013 Q4 |
| Janus Henderson | 17.98M | 6.75% | $729.1M | trimmed -1.2% | 2015 Q2 |
| MFS Investment Management | 17.56M | 6.59% | $711.8M | trimmed -6.3% | 2020 Q1 |
| Morgan Stanley | 14.44M | 5.42% | $585.6M | trimmed -12.6% | 2013 Q4 |
| Fiduciary Management INC /WI/ | 10.59M | 3.98% | $429.2M | trimmed -7.7% | 2024 Q2 |
| Capital International Investors | 10.35M | 3.89% | $419.8M | trimmed -58.4% | 2019 Q3 |
| AQR Capital | 9.90M | 3.72% | $401.5M | added +11.8% | 2015 Q2 |
| State Street | 7.92M | 2.97% | $321.0M | added +1.6% | 2014 Q2 |
| Dimensional Fund Advisors | 7.18M | 2.69% | $291.0M | added +13.8% | 2015 Q1 |
| Farallon Capital | 6.14M | 2.30% | $248.7M | trimmed -34.4% | 2020 Q4 |
| Milford Funds LTD | 6.04M | 2.27% | $244.8M | added +22.8% | 2025 Q4 |
| T. Rowe Price | 5.71M | 2.14% | $231.4M | added +2.6% | 2013 Q4 |
| Geode Capital | 4.83M | 1.81% | $195.8M | added +3.2% | 2014 Q1 |
| Goldman Sachs | 4.83M | 1.81% | $195.6M | added +91.5% | 2013 Q4 |
| PointState Capital LP (focused) | 4.53M | 1.70% | $183.7M | trimmed -4.3% | 2022 Q3 |
| Cooke & Bieler LP | 3.80M | 1.43% | $154.0M | added +18.5% | 2025 Q4 |
| FIL LTD | 3.78M | 1.42% | $153.2M | trimmed -34.8% | 2022 Q1 |
| Pinebridge Investments LLC | 3.70M | 1.39% | $149.9M | added +39.4% | 2017 Q1 |
| FMR (Fidelity) | 3.53M | 1.33% | $143.2M | added +1.2% | 2013 Q4 |
| Junto Capital Management LP | 3.30M | 1.24% | $134.0M | opened | 2025 Q1 |
| UBS | 3.20M | 1.20% | $129.8M | added +12.3% | 2013 Q4 |
| Ilex Capital Partners (UK) LLP | 3.08M | 1.16% | $124.8M | opened | 2026 Q1 |
| Grantham, Mayo, Van Otterloo & CO. LLC | 2.92M | 1.10% | $118.5M | added +15.5% | 2021 Q1 |
| Schroder Investment Management Group | 2.61M | 0.98% | $106.0M | added +9.8% | 2014 Q2 |
| BNY Mellon | 2.56M | 0.96% | $103.7M | added +4.7% | 2013 Q4 |
| Permian Investment Partners, LP (focused) | 2.46M | 0.92% | $99.8M | added +26.3% | 2023 Q4 |
| Northern Trust | 2.15M | 0.81% | $87.2M | added +3.4% | 2013 Q4 |
| Charles Schwab Investment Management | 1.86M | 0.70% | $75.6M | added +4.1% | 2014 Q1 |
| Bank OF America CORP /DE/ | 1.85M | 0.69% | $74.8M | trimmed -19% | 2013 Q4 |
| Neuberger Berman Group LLC | 1.84M | 0.69% | $74.7M | trimmed -7.1% | 2013 Q4 |
| D. E. Shaw | 1.72M | 0.65% | $69.7M | added +5.4% | 2025 Q1 |
| Engineers Gate Manager LP | 1.53M | 0.57% | $61.8M | added +1201.4% | 2025 Q3 |
| Fisher Investments | 1.46M | 0.55% | $59.4M | trimmed -6.3% | 2025 Q2 |
| Sunriver Management LLC (focused) | 1.40M | 0.53% | $56.7M | added +3.5% | 2025 Q2 |
| KR Capital LP (focused) | 1.24M | 0.47% | $50.3M | opened | 2026 Q1 |
| Nuveen | 1.22M | 0.46% | $49.3M | added +4.5% | 2019 Q2 |
| Millennium Management | 1.21M | 0.45% | $48.9M | added +244.7% | 2013 Q4 |
| Artisan Partners | 1.12M | 0.42% | $45.4M | trimmed -1.6% | 2022 Q2 |
| Prudential Financial INC | 950.1k | 0.36% | $38.5M | trimmed -14.6% | 2016 Q1 |
| Invesco | 829.3k | 0.31% | $33.6M | trimmed -60.8% | 2014 Q1 |
| Gotham Asset Management | 771.2k | 0.29% | $31.3M | added +27.7% | 2023 Q3 |
| Rhumbline Advisers | 702.5k | 0.26% | $28.5M | added +2.2% | 2014 Q2 |
| Renaissance Technologies | 683.1k | 0.26% | $27.7M | added +110.5% | 2024 Q4 |
| Public Employees Retirement Association OF Colorado | 670.1k | 0.25% | $27.2M | unchanged | 2014 Q2 |
| Focus Partners Wealth | 597.8k | 0.22% | $24.2M | trimmed -2.9% | 2023 Q4 |
| Principal Financial Group INC | 586.5k | 0.22% | $23.8M | added +3.8% | 2014 Q3 |
| Black Creek Investment Management INC. (focused) | 542.3k | 0.20% | $22.0M | trimmed -17.5% | 2021 Q4 |
| Envestnet Asset Management INC | 523.0k | 0.20% | $21.2M | added +17.9% | 2015 Q2 |
| HRT Financial LP | 521.6k | 0.20% | $21.1M | added +364% | 2025 Q2 |
Largest 50 of 453 shown; the full ranked, searchable register is at boothcheck.com/holders/ARMK. 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.