Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
138 institutional managers reported holding ATHM for the quarter ended Mar 31, 2026. Together they hold about 10% of shares outstanding; the top 10 hold 7%. 31 opened new positions; 53 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| Invesco | 4.21M | 0.89% | $73.2M | trimmed -34.6% | 2014 Q2 |
| FIL LTD | 4.19M | 0.89% | $72.8M | trimmed -2.8% | 2015 Q1 |
| Acadian Asset Management | 4.17M | 0.88% | $72.5M | trimmed -5% | 2023 Q1 |
| North of South Capital LLP (focused) | 3.70M | 0.78% | $64.3M | added +62.8% | 2024 Q2 |
| Federated Hermes, INC. | 3.65M | 0.77% | $63.5M | added +28% | 2024 Q3 |
| M&G PLC | 3.47M | 0.74% | $60.4M | added +1.6% | 2019 Q4 |
| BlackRock | 3.31M | 0.70% | $57.6M | trimmed -9.9% | 2013 Q4 |
| Krane Funds Advisors LLC | 2.77M | 0.59% | $48.1M | trimmed -10.6% | 2018 Q1 |
| Vanguard Group | 2.58M | 0.55% | $44.8M | trimmed -3.9% | 2017 Q2 |
| Schroder Investment Management Group | 2.23M | 0.47% | $38.8M | added +76% | 2023 Q4 |
| Polunin Capital Partners LTD (focused) | 1.14M | 0.24% | $19.9M | unchanged | 2022 Q2 |
| State Street | 793.5k | 0.17% | $13.8M | trimmed -39.8% | 2014 Q3 |
| Long Corridor Asset Management LTD (focused) | 718.0k | 0.15% | $12.5M | added +434.2% | 2025 Q1 |
| Jane Street | 605.2k | 0.13% | $10.5M | added +285.3% | 2022 Q3 |
| Qube Research & Technologies LTD | 576.9k | 0.12% | $10.0M | opened | 2024 Q4 |
| D. E. Shaw | 510.5k | 0.11% | $8.9M | added +3594.6% | 2015 Q1 |
| UBS | 506.9k | 0.11% | $8.8M | trimmed -53.4% | 2014 Q1 |
| American Century Companies INC | 452.5k | 0.10% | $7.9M | added +32.6% | 2020 Q1 |
| Citadel Advisors | 438.8k | 0.09% | $7.6M | added +420.1% | 2022 Q3 |
| Russell Investments Group, LTD. | 409.9k | 0.09% | $7.1M | unchanged | 2016 Q4 |
| Aberdeen Group plc | 407.6k | 0.09% | $7.1M | trimmed -0.5% | 2017 Q3 |
| Dimensional Fund Advisors | 370.1k | 0.08% | $6.4M | added +19.5% | 2025 Q2 |
| Oasis Management CO LTD. | 368.0k | 0.08% | $6.4M | unchanged | 2024 Q1 |
| Morgan Stanley | 365.8k | 0.08% | $6.4M | trimmed -29% | 2013 Q4 |
| Bank OF America CORP /DE/ | 364.8k | 0.08% | $6.3M | added +159.7% | 2014 Q3 |
| SEI Investments CO | 330.1k | 0.07% | $5.7M | trimmed -2.5% | 2016 Q3 |
| First Trust Advisors LP | 329.0k | 0.07% | $5.7M | opened | 2026 Q1 |
| ABN Amro Investment Solutions | 308.2k | 0.07% | $5.4M | added +47.6% | 2023 Q1 |
| AQR Capital | 292.6k | 0.06% | $5.1M | trimmed -39.6% | 2024 Q2 |
| E Fund Management CO., LTD. | 270.3k | 0.06% | $4.7M | opened | 2026 Q1 |
| Legal & General Group PLC | 259.7k | 0.06% | $4.5M | trimmed -41.5% | 2015 Q3 |
| Public Employees Retirement System OF Ohio | 249.2k | 0.05% | $4.3M | trimmed -4.4% | 2024 Q3 |
| HRT Financial LP | 181.6k | 0.04% | $3.2M | opened | 2026 Q1 |
| Storebrand Asset Management AS | 161.9k | 0.03% | $2.8M | unchanged | 2025 Q4 |
| BNP Paribas Financial Markets | 159.1k | 0.03% | $2.8M | trimmed -58.8% | 2015 Q2 |
| Neuberger Berman Group LLC | 156.9k | 0.03% | $2.7M | opened | 2026 Q1 |
| Voloridge Investment Management | 148.1k | 0.03% | $2.6M | opened | 2026 Q1 |
| Renaissance Technologies | 139.2k | 0.03% | $2.4M | opened | 2026 Q1 |
| NEW York State Common Retirement Fund | 126.1k | 0.03% | $2.2M | unchanged | 2015 Q2 |
| Verdad Advisers, LP | 121.3k | 0.03% | $2.1M | opened | 2026 Q1 |
| Northern Trust | 116.7k | 0.03% | $2.0M | trimmed -54.5% | 2014 Q3 |
| Millennium Management | 114.5k | 0.02% | $2.0M | added +436.8% | 2014 Q1 |
| Squarepoint Ops LLC | 109.4k | 0.02% | $1.9M | added +773.1% | 2025 Q1 |
| KBC Group NV | 97.5k | 0.02% | $1.7M | added +28.6% | 2017 Q3 |
| XTX Topco LTD | 95.5k | 0.02% | $1.7M | added +56.5% | 2023 Q4 |
| Pictet Asset Management Holding SA | 94.9k | 0.02% | $1.6M | trimmed -77.3% | 2017 Q2 |
| Mackenzie Financial CORP | 89.8k | 0.02% | $1.6M | trimmed -12% | 2025 Q2 |
| Point72 | 82.4k | 0.02% | $1.4M | opened | 2026 Q1 |
| Geode Capital | 82.1k | 0.02% | $1.4M | trimmed -80.5% | 2017 Q1 |
| Canada Life Assurance CO | 79.2k | 0.02% | $1.4M | trimmed -29.7% | 2017 Q2 |
Largest 50 of 138 shown; the full ranked, searchable register is at boothcheck.com/holders/ATHM. 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.