Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
397 institutional managers reported holding AXSM for the quarter ended Mar 31, 2026. Together they hold about 74% of shares outstanding; the top 10 hold 35%. 63 opened new positions; 56 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| Vanguard Group | 4.35M | 8.51% | $735.1M | added +4.5% | 2016 Q1 |
| BlackRock | 3.91M | 7.64% | $660.5M | unchanged | 2015 Q4 |
| FMR (Fidelity) | 1.57M | 3.06% | $264.5M | added +32.6% | 2019 Q3 |
| T. Rowe Price | 1.32M | 2.57% | $222.3M | trimmed -12.8% | 2019 Q2 |
| Invesco | 1.30M | 2.54% | $219.0M | added +1.9% | 2019 Q1 |
| Geode Capital | 1.16M | 2.27% | $196.3M | added +15.1% | 2016 Q1 |
| Wellington Management | 1.15M | 2.24% | $193.3M | trimmed -6.2% | 2023 Q2 |
| Deep Track Capital, LP | 1.10M | 2.15% | $185.7M | trimmed -4.3% | 2025 Q2 |
| State Street | 986.8k | 1.93% | $166.6M | added +3% | 2019 Q1 |
| Assenagon Asset Management S.a. | 866.0k | 1.69% | $146.2M | added +85% | 2024 Q2 |
| Nomura Asset Management International INC. | 837.4k | 1.64% | $141.4M | trimmed -15.4% | 2025 Q4 |
| Adage Capital Partners GP, L.l.c. | 737.6k | 1.44% | $124.5M | added +100.7% | 2022 Q1 |
| Alethea Capital Management, LLC (focused) | 649.1k | 1.27% | $109.6M | trimmed -2.9% | 2017 Q4 |
| UBS | 642.1k | 1.25% | $108.4M | added +45.1% | 2019 Q1 |
| D. E. Shaw | 603.5k | 1.18% | $101.9M | added +9.9% | 2023 Q4 |
| Bank OF America CORP /DE/ | 598.1k | 1.17% | $101.0M | trimmed -3.2% | 2018 Q4 |
| First Trust Advisors LP | 577.5k | 1.13% | $97.5M | added +1230.2% | 2023 Q4 |
| Eventide Asset Management, LLC | 519.6k | 1.01% | $87.7M | trimmed -9% | 2023 Q3 |
| Morgan Stanley | 476.7k | 0.93% | $80.5M | trimmed -3% | 2015 Q4 |
| Franklin Resources | 438.5k | 0.86% | $74.0M | added +28% | 2022 Q4 |
| Point72 | 424.8k | 0.83% | $71.7M | added +2259.9% | 2022 Q2 |
| Goldman Sachs | 421.4k | 0.82% | $71.1M | added +40.1% | 2019 Q1 |
| Pictet Asset Management Holding SA | 416.0k | 0.81% | $70.2M | trimmed -4.6% | 2019 Q4 |
| Northern Trust | 401.5k | 0.78% | $67.8M | added +2.8% | 2016 Q2 |
| Charles Schwab Investment Management | 395.1k | 0.77% | $66.7M | trimmed -1.9% | 2019 Q2 |
| Hood River Capital Management LLC | 371.5k | 0.73% | $62.7M | added +1.5% | 2022 Q4 |
| Principal Financial Group INC | 350.5k | 0.69% | $59.2M | trimmed -3.5% | 2019 Q4 |
| Nuveen | 335.7k | 0.66% | $56.7M | trimmed -3.9% | 2019 Q2 |
| Qube Research & Technologies LTD | 335.3k | 0.66% | $56.6M | added +3% | 2024 Q1 |
| Two Sigma | 322.8k | 0.63% | $54.5M | added +121.7% | 2025 Q1 |
| Driehaus Capital Management LLC | 292.4k | 0.57% | $49.4M | added +32.6% | 2025 Q1 |
| Citadel Advisors | 281.5k | 0.55% | $47.5M | added +103.7% | 2019 Q1 |
| PFM Health Sciences, LP | 264.3k | 0.52% | $44.6M | added +5.1% | 2022 Q2 |
| Loomis Sayles & CO L P | 256.6k | 0.50% | $43.3M | trimmed -18.6% | 2024 Q1 |
| Orbimed Advisors LLC | 213.9k | 0.42% | $36.1M | trimmed -15.5% | 2025 Q1 |
| Sofinnova Investments, INC. | 212.7k | 0.42% | $35.9M | added +1634.4% | 2024 Q2 |
| BNY Mellon | 206.6k | 0.40% | $34.9M | trimmed -19% | 2018 Q4 |
| Frontier Capital Management CO LLC | 203.1k | 0.40% | $34.3M | added +28.8% | 2022 Q4 |
| First Turn Management, LLC (focused) | 188.8k | 0.37% | $31.9M | trimmed -8.8% | 2023 Q4 |
| BNP Paribas Financial Markets | 188.8k | 0.37% | $31.9M | trimmed -38.1% | 2016 Q2 |
| Citigroup INC | 185.7k | 0.36% | $31.3M | trimmed -9% | 2019 Q1 |
| Voya Investment Management LLC | 184.0k | 0.36% | $31.1M | added +6.2% | 2019 Q2 |
| Ameriprise Financial INC | 176.3k | 0.34% | $29.8M | added +76.5% | 2022 Q3 |
| Renaissance Technologies | 164.3k | 0.32% | $27.7M | trimmed -3.4% | 2025 Q1 |
| Woodline Partners LP | 162.2k | 0.32% | $27.4M | added +7.5% | 2022 Q4 |
| MetLife Investment Management, LLC | 152.6k | 0.30% | $25.8M | trimmed -7.4% | 2019 Q3 |
| Perceptive Advisors LLC | 149.9k | 0.29% | $25.3M | added +0.7% | 2023 Q2 |
| Aberdeen Group plc | 149.7k | 0.29% | $25.3M | added +53.7% | 2024 Q2 |
| Voleon Capital Management LP | 147.9k | 0.29% | $25.0M | added +34.2% | 2025 Q3 |
| Raymond James Financial INC | 147.8k | 0.29% | $24.9M | trimmed -1.6% | 2019 Q2 |
Largest 50 of 397 shown; the full ranked, searchable register is at boothcheck.com/holders/AXSM. 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.