Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
619 institutional managers reported holding AR for the quarter ended Mar 31, 2026. Together they hold about 87% of shares outstanding; the top 10 hold 43%. 132 opened new positions; 88 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| Vanguard Group | 29.53M | 9.48% | $1.25B | added +3.1% | 2013 Q4 |
| BlackRock | 27.43M | 8.81% | $1.16B | added +5.1% | 2013 Q4 |
| FMR (Fidelity) | 22.78M | 7.31% | $966.8M | trimmed -3.7% | 2020 Q2 |
| State Street | 10.80M | 3.47% | $458.6M | added +9.3% | 2014 Q2 |
| Dimensional Fund Advisors | 10.24M | 3.29% | $434.6M | added +12.7% | 2015 Q2 |
| Invesco | 8.97M | 2.88% | $380.7M | added +79.4% | 2013 Q4 |
| Sourcerock Group LLC (focused) | 8.31M | 2.67% | $352.6M | trimmed -9.4% | 2023 Q4 |
| Geode Capital | 5.63M | 1.81% | $239.0M | added +5.3% | 2013 Q4 |
| AQR Capital | 5.48M | 1.76% | $232.5M | added +16.6% | 2017 Q4 |
| Orbis Allan Gray LTD | 4.87M | 1.56% | $206.8M | added +554.7% | 2025 Q4 |
| Wellington Management | 4.76M | 1.53% | $202.3M | trimmed -57.9% | 2020 Q4 |
| Goldman Sachs | 4.75M | 1.52% | $201.7M | added +18.5% | 2013 Q4 |
| MFS Investment Management | 4.23M | 1.36% | $179.5M | added +6% | 2024 Q1 |
| Neuberger Berman Group LLC | 3.83M | 1.23% | $162.8M | added +0.5% | 2013 Q4 |
| Raymond James Financial INC | 3.82M | 1.23% | $162.0M | trimmed -12.2% | 2013 Q4 |
| Adage Capital Partners GP, L.l.c. | 3.62M | 1.16% | $153.6M | added +5.2% | 2021 Q3 |
| Assenagon Asset Management S.a. | 3.61M | 1.16% | $153.3M | added +177.4% | 2020 Q4 |
| Morgan Stanley | 3.58M | 1.15% | $151.9M | added +4.7% | 2013 Q4 |
| BNY Mellon | 3.48M | 1.12% | $147.7M | added +12.2% | 2013 Q4 |
| Qube Research & Technologies LTD | 2.81M | 0.90% | $119.2M | added +25.2% | 2025 Q1 |
| Northern Trust | 2.62M | 0.84% | $111.1M | added +11% | 2013 Q4 |
| D. E. Shaw | 2.55M | 0.82% | $108.1M | trimmed -36.5% | 2019 Q1 |
| UBS | 2.55M | 0.82% | $108.0M | added +67.1% | 2013 Q4 |
| Eurizon Capital SGR S.p.A. | 2.52M | 0.81% | $106.8M | added +47.8% | 2025 Q4 |
| CPP Investment Board | 2.34M | 0.75% | $99.3M | added +4.5% | 2013 Q4 |
| Jupiter Asset Management LTD | 2.27M | 0.73% | $96.2M | added +30.7% | 2025 Q3 |
| Charles Schwab Investment Management | 2.25M | 0.72% | $95.6M | added +4.9% | 2013 Q4 |
| Palo Duro Investment Partners, LP (focused) | 2.12M | 0.68% | $89.8M | added +9.4% | 2023 Q1 |
| First Trust Advisors LP | 1.77M | 0.57% | $74.9M | added +124.8% | 2013 Q4 |
| Diamond Hill Capital Management INC | 1.71M | 0.55% | $72.4M | added +158.5% | 2025 Q2 |
| Citadel Advisors | 1.62M | 0.52% | $68.9M | added +294% | 2013 Q4 |
| Goehring & Rozencwajg Associates, LLC (focused) | 1.62M | 0.52% | $68.6M | added +36.6% | 2022 Q4 |
| Vaughan Nelson Investment Management, L.p. | 1.44M | 0.46% | $61.2M | trimmed -17.8% | 2021 Q4 |
| Frontier Capital Management CO LLC | 1.35M | 0.43% | $57.3M | opened | 2026 Q1 |
| Freestone Grove Partners LP | 1.35M | 0.43% | $57.2M | trimmed -28.8% | 2024 Q4 |
| Squarepoint Ops LLC | 1.29M | 0.42% | $55.0M | trimmed -40.5% | 2019 Q1 |
| Franklin Resources | 1.26M | 0.40% | $53.4M | added +3% | 2021 Q3 |
| SIR Capital Management, L.p. | 1.24M | 0.40% | $52.8M | added +141.7% | 2024 Q1 |
| Stephens Investment Management Group LLC | 1.18M | 0.38% | $50.1M | trimmed -0.6% | 2025 Q1 |
| Long Focus Capital Management, LLC | 1.17M | 0.38% | $49.7M | trimmed -10.8% | 2021 Q4 |
| Bornite Capital Management LP (focused) | 1.04M | 0.33% | $44.1M | opened | 2026 Q1 |
| Victory Capital Management INC | 1.01M | 0.32% | $42.8M | trimmed -9% | 2019 Q3 |
| Gw&k Investment Management, LLC | 1.01M | 0.32% | $42.8M | trimmed -0.6% | 2025 Q2 |
| Bank OF America CORP /DE/ | 1.00M | 0.32% | $42.6M | added +31.3% | 2013 Q4 |
| T. Rowe Price | 998.3k | 0.32% | $42.4M | added +329.8% | 2013 Q4 |
| Gemsstock LTD. (focused) | 992.4k | 0.32% | $42.1M | added +4.5% | 2025 Q1 |
| Merewether Investment Management, LP | 951.2k | 0.30% | $40.4M | added +30.7% | 2020 Q4 |
| Covalis Capital LLP | 923.8k | 0.30% | $39.2M | added +113.3% | 2025 Q4 |
| Webs Creek Capital Management LP (focused) | 906.3k | 0.29% | $38.5M | trimmed -39.7% | 2025 Q4 |
| Nuveen | 883.1k | 0.28% | $37.5M | trimmed -3.7% | 2017 Q3 |
Largest 50 of 619 shown; the full ranked, searchable register is at boothcheck.com/holders/AR. 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.