Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
304 institutional managers reported holding AMRX for the quarter ended Mar 31, 2026. Together they hold about 48% of shares outstanding; the top 10 hold 29%. 71 opened new positions; 42 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| BlackRock | 24.52M | 7.45% | $304.8M | added +71.5% | 2018 Q2 |
| Vanguard Group | 20.32M | 6.18% | $252.6M | added +13.5% | 2018 Q2 |
| TPG GP A, LLC | 12.33M | 3.75% | $153.2M | unchanged | 2021 Q4 |
| Rubric Capital Management LP | 11.04M | 3.36% | $137.2M | trimmed -10.5% | 2023 Q2 |
| State Street | 6.79M | 2.07% | $84.5M | added +65.3% | 2018 Q2 |
| Dimensional Fund Advisors | 5.69M | 1.73% | $70.7M | added +1.5% | 2020 Q1 |
| Morgan Stanley | 4.64M | 1.41% | $57.6M | trimmed -3.8% | 2018 Q2 |
| Geode Capital | 4.55M | 1.38% | $56.5M | added +14% | 2018 Q2 |
| Neuberger Berman Group LLC | 3.68M | 1.12% | $45.8M | added +0.7% | 2018 Q2 |
| Nuveen | 3.24M | 0.99% | $40.3M | added +0.7% | 2019 Q2 |
| Invesco | 3.19M | 0.97% | $39.6M | added +82.1% | 2018 Q2 |
| Assenagon Asset Management S.a. | 3.07M | 0.93% | $38.1M | trimmed -18.5% | 2022 Q4 |
| Goldman Sachs | 2.86M | 0.87% | $35.6M | added +11% | 2018 Q2 |
| Nantahala Capital Management, LLC | 2.84M | 0.86% | $35.4M | added +16.2% | 2023 Q1 |
| Allspring Global Investments Holdings, LLC | 2.55M | 0.78% | $31.7M | added +72.2% | 2021 Q4 |
| Charles Schwab Investment Management | 2.18M | 0.66% | $27.1M | added +1.9% | 2018 Q2 |
| Acadian Asset Management | 1.93M | 0.59% | $24.0M | trimmed -4.4% | 2023 Q4 |
| Ameriprise Financial INC | 1.87M | 0.57% | $23.2M | added +45.3% | 2021 Q2 |
| D. E. Shaw | 1.72M | 0.52% | $21.4M | trimmed -35.4% | 2025 Q1 |
| Northern Trust | 1.71M | 0.52% | $21.2M | added +10.3% | 2018 Q2 |
| BlackBarn Capital Partners LP (focused) | 1.65M | 0.50% | $20.5M | added +5.1% | 2024 Q1 |
| Westshore Wealth, LLC | 1.37M | 0.42% | $17.1M | trimmed -0.6% | 2025 Q3 |
| Penn Capital Management Company, LLC | 1.20M | 0.36% | $14.9M | added +19.4% | 2025 Q4 |
| UBS | 1.09M | 0.33% | $13.6M | trimmed -7.5% | 2018 Q2 |
| Phocas Financial CORP. | 1.00M | 0.30% | $12.5M | trimmed -21.8% | 2023 Q4 |
| Principal Financial Group INC | 983.1k | 0.30% | $12.2M | added +534.7% | 2018 Q3 |
| NEW York State Common Retirement Fund | 954.8k | 0.29% | $11.9M | added +13.5% | 2018 Q2 |
| PFM Health Sciences, LP | 930.1k | 0.28% | $11.6M | trimmed -36.5% | 2025 Q3 |
| BNY Mellon | 914.1k | 0.28% | $11.4M | added +84.3% | 2018 Q2 |
| AQR Capital | 864.8k | 0.26% | $10.7M | trimmed -17.3% | 2022 Q1 |
| FMR (Fidelity) | 792.0k | 0.24% | $9.8M | added +110.1% | 2022 Q1 |
| Voleon Capital Management LP | 786.8k | 0.24% | $9.8M | trimmed -8.6% | 2024 Q4 |
| First Trust Advisors LP | 757.2k | 0.23% | $9.4M | added +18.3% | 2024 Q2 |
| Hillsdale Investment Management INC. | 743.7k | 0.23% | $9.2M | added +4.1% | 2025 Q1 |
| BNP Paribas Financial Markets | 735.7k | 0.22% | $9.1M | added +4.3% | 2018 Q2 |
| Raymond James Financial INC | 734.0k | 0.22% | $9.1M | added +5.2% | 2018 Q2 |
| SG Americas Securities, LLC | 710.9k | 0.22% | $8.8M | trimmed -9.4% | 2022 Q3 |
| SEI Investments CO | 706.7k | 0.21% | $8.8M | added +26.3% | 2018 Q2 |
| Bank OF America CORP /DE/ | 676.8k | 0.21% | $8.4M | added +50% | 2018 Q2 |
| Public Sector Pension Investment Board | 607.3k | 0.18% | $7.5M | opened | 2026 Q1 |
| Citadel Advisors | 577.4k | 0.18% | $7.2M | trimmed -90.7% | 2019 Q2 |
| Arrowstreet Capital | 524.0k | 0.16% | $6.5M | trimmed -51.9% | 2022 Q4 |
| Prudential Financial INC | 512.0k | 0.16% | $6.4M | added +26.1% | 2018 Q2 |
| Victory Capital Management INC | 462.0k | 0.14% | $5.7M | added +2459.3% | 2019 Q3 |
| Quartz Partners, LLC | 447.2k | 0.14% | $5.6M | opened | 2026 Q1 |
| Qube Research & Technologies LTD | 439.7k | 0.13% | $5.5M | trimmed -63.7% | 2023 Q4 |
| Franklin Resources | 437.8k | 0.13% | $5.4M | added +5.6% | 2023 Q3 |
| AllianceBernstein | 411.9k | 0.13% | $5.1M | trimmed -22.3% | 2018 Q2 |
| Millennium Management | 369.7k | 0.11% | $4.6M | trimmed -89% | 2018 Q2 |
| Legal & General Group PLC | 364.5k | 0.11% | $4.5M | added +144.2% | 2018 Q2 |
Largest 50 of 304 shown; the full ranked, searchable register is at boothcheck.com/holders/AMRX. 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.