Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
231 institutional managers reported holding AHCO for the quarter ended Mar 31, 2026. Reported positions total over 95% of shares outstanding; the top 10 hold 71%. 38 opened new positions; 37 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| OEP Capital Advisors, L.p. (focused) | 16.31M | 12.01% | $194.0M | added +18.1% | 2020 Q4 |
| BlackRock | 15.94M | 11.74% | $189.5M | added +1.6% | 2020 Q1 |
| Vanguard Group | 11.58M | 8.53% | $137.7M | trimmed -1.6% | 2019 Q4 |
| Deerfield Management Company, L.p. | 11.48M | 8.45% | $136.5M | unchanged | 2019 Q4 |
| Reinhart Partners, LLC. | 10.08M | 7.42% | $119.9M | added +24.5% | 2022 Q2 |
| SkyKnight Capital, L.p. (focused) | 8.58M | 6.32% | $102.0M | unchanged | 2021 Q4 |
| FMR (Fidelity) | 8.05M | 5.93% | $95.8M | added +5.5% | 2019 Q4 |
| Dimensional Fund Advisors | 6.92M | 5.10% | $82.3M | added +8.1% | 2023 Q2 |
| State Street | 4.30M | 3.17% | $51.1M | trimmed -1.5% | 2020 Q2 |
| Segall Bryant & Hamill, LLC | 3.76M | 2.77% | $44.7M | trimmed -4.1% | 2023 Q2 |
| Principal Financial Group INC | 2.78M | 2.05% | $33.1M | added +25.1% | 2020 Q3 |
| Geode Capital | 2.68M | 1.97% | $31.9M | added +2% | 2020 Q2 |
| Kennedy Capital Management LLC | 2.47M | 1.82% | $29.4M | added +2.6% | 2021 Q2 |
| Palisade Capital Management, LP | 2.16M | 1.59% | $25.7M | trimmed -5.6% | 2021 Q1 |
| Charles Schwab Investment Management | 2.08M | 1.53% | $24.8M | trimmed -6.7% | 2020 Q2 |
| Lazard Asset Management LLC | 1.67M | 1.23% | $19.8M | added +35% | 2024 Q2 |
| Invesco | 1.64M | 1.21% | $19.5M | trimmed -2.2% | 2020 Q2 |
| Ameriprise Financial INC | 1.57M | 1.15% | $18.6M | added +27% | 2020 Q3 |
| Royal Bank OF Canada | 1.47M | 1.08% | $17.5M | trimmed -14.6% | 2020 Q3 |
| Northern Trust | 1.23M | 0.91% | $14.6M | added +2.5% | 2020 Q2 |
| Goldman Sachs | 1.13M | 0.83% | $13.4M | added +203.8% | 2019 Q4 |
| Bridgeway Capital Management, LLC | 1.01M | 0.74% | $12.0M | added +0.9% | 2023 Q2 |
| AQR Capital | 966.4k | 0.71% | $11.5M | added +85.3% | 2022 Q3 |
| CSM Advisors, LLC | 857.5k | 0.63% | $10.2M | added +9.7% | 2025 Q2 |
| Arrowstreet Capital | 847.1k | 0.62% | $10.1M | added +87.7% | 2025 Q2 |
| Morgan Stanley | 846.5k | 0.62% | $10.1M | trimmed -17.8% | 2019 Q4 |
| NEW York State Common Retirement Fund | 833.4k | 0.61% | $9.9M | trimmed -0.9% | 2020 Q2 |
| Neuberger Berman Group LLC | 830.0k | 0.61% | $9.9M | added +14.6% | 2021 Q1 |
| UBS | 777.6k | 0.57% | $9.2M | added +90.6% | 2019 Q4 |
| BNY Mellon | 681.7k | 0.50% | $8.1M | trimmed -1.6% | 2020 Q1 |
| Millennium Management | 661.2k | 0.49% | $7.9M | added +19.6% | 2019 Q4 |
| Empowered Funds, LLC | 622.9k | 0.46% | $7.4M | added +1.4% | 2023 Q2 |
| Bastion Asset Management INC. | 555.8k | 0.41% | $6.6M | added +4.9% | 2025 Q3 |
| SEI Investments CO | 541.3k | 0.40% | $6.4M | added +17.8% | 2020 Q4 |
| Bessemer Group INC | 482.9k | 0.36% | $5.7M | added +47.8% | 2022 Q4 |
| Jane Street | 478.2k | 0.35% | $5.7M | added +7.5% | 2020 Q2 |
| Peregrine Capital Management LLC | 467.7k | 0.34% | $5.6M | trimmed -8.7% | 2024 Q1 |
| First Trust Advisors LP | 427.2k | 0.32% | $5.1M | trimmed -2.9% | 2025 Q1 |
| Man Group | 414.5k | 0.30% | $4.9M | added +366.9% | 2024 Q3 |
| Public Sector Pension Investment Board | 383.9k | 0.28% | $4.6M | added +3.3% | 2022 Q3 |
| D. E. Shaw | 335.5k | 0.25% | $4.0M | added +10.9% | 2024 Q1 |
| Truist Financial CORP | 325.3k | 0.24% | $3.9M | unchanged | 2021 Q4 |
| Rhumbline Advisers | 310.4k | 0.23% | $3.7M | added +4.4% | 2020 Q3 |
| Nuveen | 287.7k | 0.21% | $3.4M | added +3% | 2020 Q2 |
| Harbor Capital Advisors, INC. | 261.6k | 0.19% | $3.1M | added +50.8% | 2023 Q2 |
| Allianz Asset Management GmbH | 256.9k | 0.19% | $3.1M | trimmed -28.5% | 2024 Q3 |
| American Century Companies INC | 255.7k | 0.19% | $3.0M | added +5% | 2023 Q2 |
| Legal & General Group PLC | 242.5k | 0.18% | $2.9M | trimmed -7.5% | 2020 Q2 |
| ExodusPoint | 241.4k | 0.18% | $2.9M | opened | 2025 Q1 |
| Wedge Capital Management L L P/NC | 236.7k | 0.17% | $2.8M | opened | 2026 Q1 |
Largest 50 of 231 shown; the full ranked, searchable register is at boothcheck.com/holders/AHCO. 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.