Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
509 institutional managers reported holding ACHR for the quarter ended Mar 31, 2026. Together they hold about 48% of shares outstanding; the top 10 hold 32%. 70 opened new positions; 99 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| BlackRock | 58.90M | 7.68% | $304.5M | added +2.7% | 2021 Q4 |
| Vanguard Group | 52.75M | 6.88% | $272.7M | trimmed -3.6% | 2021 Q4 |
| State Street | 43.64M | 5.69% | $225.6M | added +33.2% | 2021 Q4 |
| ARK Investment Management | 37.44M | 4.88% | $193.5M | added +6.4% | 2021 Q3 |
| Geode Capital | 14.64M | 1.91% | $75.7M | added +1.8% | 2021 Q4 |
| Morgan Stanley | 10.48M | 1.37% | $54.2M | trimmed -33.4% | 2021 Q3 |
| Sumitomo Mitsui Trust Group, INC. | 7.65M | 1.00% | $39.6M | trimmed -3.3% | 2021 Q3 |
| Amova Asset Management Americas, INC. | 7.65M | 1.00% | $39.6M | trimmed -3.3% | 2021 Q3 |
| UBS | 6.32M | 0.82% | $32.7M | added +84.2% | 2021 Q3 |
| Goldman Sachs | 5.76M | 0.75% | $29.8M | trimmed -7.8% | 2021 Q4 |
| Alpine Global Management, LLC | 5.63M | 0.73% | $29.1M | added +20.4% | 2022 Q2 |
| Charles Schwab Investment Management | 5.40M | 0.70% | $27.9M | trimmed -0.6% | 2021 Q4 |
| Northern Trust | 5.12M | 0.67% | $26.5M | trimmed -0.9% | 2021 Q4 |
| Blackstone | 5.05M | 0.66% | $26.1M | trimmed -35.3% | 2025 Q2 |
| Alyeska Investment Group | 4.73M | 0.62% | $24.5M | trimmed -21.2% | 2024 Q3 |
| Voya Investment Management LLC | 4.58M | 0.60% | $23.7M | added +46.2% | 2022 Q2 |
| Susquehanna International Group | 4.57M | 0.60% | $23.6M | added +492.9% | 2021 Q3 |
| HRT Financial LP | 3.26M | 0.42% | $16.9M | added +324.1% | 2025 Q4 |
| United Airlines Holdings, INC. (focused) | 3.17M | 0.41% | $16.4M | unchanged | 2025 Q4 |
| Citadel Advisors | 2.92M | 0.38% | $15.1M | added +32.5% | 2021 Q3 |
| Clear Street Group INC. | 2.85M | 0.37% | $14.8M | added +35.2% | 2025 Q3 |
| Hudson Bay Capital | 2.57M | 0.34% | $13.3M | trimmed -2.8% | 2024 Q3 |
| Renaissance Technologies | 2.51M | 0.33% | $13.0M | added +703.3% | 2025 Q4 |
| Aquatic Capital Management LLC | 2.28M | 0.30% | $11.8M | added +1107.2% | 2025 Q3 |
| Marshall Wace | 2.26M | 0.29% | $11.7M | added +467.4% | 2025 Q1 |
| Bank OF America CORP /DE/ | 2.14M | 0.28% | $11.0M | added +33.2% | 2021 Q3 |
| Nuveen | 2.09M | 0.27% | $10.8M | added +19.3% | 2022 Q2 |
| Voloridge Investment Management | 1.82M | 0.24% | $9.4M | opened | 2026 Q1 |
| BNY Mellon | 1.76M | 0.23% | $9.1M | trimmed -18% | 2021 Q4 |
| IQ EQ Fund Management (IRELAND) LTD | 1.72M | 0.22% | $8.9M | added +2% | 2024 Q2 |
| Invesco | 1.67M | 0.22% | $8.6M | trimmed -6% | 2021 Q4 |
| Seven Grand Managers, LLC | 1.50M | 0.20% | $7.8M | trimmed -50% | 2025 Q4 |
| Granahan Investment Management, LLC | 1.48M | 0.19% | $7.7M | trimmed -13.6% | 2024 Q4 |
| BNP Paribas Financial Markets | 1.31M | 0.17% | $6.8M | trimmed -74.5% | 2024 Q4 |
| Swiss National Bank | 1.22M | 0.16% | $6.3M | unchanged | 2023 Q3 |
| Wells Fargo & COMPANY/MN | 1.20M | 0.16% | $6.2M | added +12% | 2021 Q3 |
| Walleye Capital LLC | 1.15M | 0.15% | $5.9M | added +24.5% | 2024 Q2 |
| Jane Street | 1.12M | 0.15% | $5.8M | added +126.6% | 2021 Q4 |
| Infinitum Asset Management, LLC (focused) | 1.11M | 0.14% | $5.8M | unchanged | 2024 Q4 |
| Raymond James Financial INC | 1.07M | 0.14% | $5.5M | added +25.8% | 2021 Q3 |
| Alta Fundamental Advisers LLC (focused) | 1.07M | 0.14% | $5.5M | trimmed -8.6% | 2023 Q3 |
| Generali Powszechne Towarzystwo Emerytalne (focused) | 1.00M | 0.13% | $5.2M | unchanged | 2025 Q4 |
| HBK Investments L P | 1.00M | 0.13% | $5.2M | trimmed -20% | 2023 Q3 |
| Sora Investors LLC | 927.6k | 0.12% | $4.8M | added +186.5% | 2024 Q3 |
| Group ONE Trading LLC | 917.7k | 0.12% | $4.7M | added +24.2% | 2024 Q3 |
| LPL Financial LLC | 837.3k | 0.11% | $4.3M | added +0.6% | 2022 Q2 |
| Citigroup INC | 819.9k | 0.11% | $4.2M | added +78.1% | 2021 Q4 |
| Defiance ETFs, LLC | 817.3k | 0.11% | $4.2M | opened | 2026 Q1 |
| Penserra Capital Management LLC | 813.2k | 0.11% | $4.2M | opened | 2026 Q1 |
| Cetera Investment Advisers | 792.5k | 0.10% | $4.1M | added +8.3% | 2023 Q3 |
Largest 50 of 509 shown; the full ranked, searchable register is at boothcheck.com/holders/ACHR. 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.